[http://bitcoinvenezuela.com Bitcoin Venezuela] fue creada el día 11 Octubre de 2012 para dar a conocer Bitcoin en Venezuela. Con presencia en España y Venezuela, tenemos el objetivo principal de dar a conocer esta nueva forma de pago y orientar a los nuevos usuarios.

Puedes seguirnos en:

Web: http://bitcoinvenezuela.com

Twitter: https://twitter.com/btcven

Facebook: https://www.facebook.com/btcven

Google+: https://plus.google.com/103832285759023829835/posts

Foro Bitcointalk: https://bitcointalk.org/index.php?action=profile;u=70647

Puedes contactarnos a través de cualquiera de los medios anteriormente mencionados, o enviando un correo a contacto@bitcoinvenezuela.com (PGP)

== Nosotros ==

Bitcoin Venezuela es un proyecto para crear presencia de los bitcoins en este país. Nuestro objetivo principal es dar a conocer la moneda en Venezuela y establecer unas bases de conversiones para quienes las quieran seguir a las monedas internacionales.

== Venezuela ==

Venezuela se encuentra actualmente bajo un régimen socialista-comunista en el que existen restricciones para la adquisición de divisas y esto dificulta la compra/venta de productos extranjeros, así como la salida de dinero del país para viajes, compras o ahorros.

Al existir un control cambiario la cantidad de divisas (dólares, euros...) que puede adquirir una persona a precio de mercado es excesivamente limitada; disparándose así el precio, debido a la alta demanda, de estas modenas extranjeras en el mercado paralelo.
El precio actual del Dólar regulado (Dólar CADIVI) es de 4,29 Bs [http://bitcoinvenezuela.com/venezuela.php (ver precio actualizado)], pero comprarlos en la calle a este precio es imposible. El precio que se maneja es el del Dólar Paralelo (Dólar Permuta, Lechugas...) que ronda los 13,95 Bs [http://bitcoinvenezuela.com/venezuela.php (ver precio actualizado)].

== Servicios y herramientas ==

=== Generador de billetes/cheques en jQuery ===

Existen algunas herramientas para generar billetes/cheques de Bitcoin para poder usarlos como pago físico, pero estas están recibiendo muchas críticas debido al uso de lenguajes de programación que funcionan desde el servidor (PHP, Python, etc) y el miedo que esto supone al existir la posibilidad de enviar los datos al servidor.

Bitcoin Venezuela ha creado una herramienta que funciona con jQuery y por tanto ningún dato introducido en el formulario es enviado al servidor para la creación del billete. Al usar jQuery funciona desde el navegador cliente y no es necesario instalarlo en un servidor para funcionar. Se puede utilizar sin conexión a internet para mayor seguridad una vez cargada la página.

Consiste en dos campos de texto, uno para la Dirección Bitcoin y otro para la Llave Privada. Una vez introducidos se genera el billete y simplemente hay que imprimirlo.

[http://bitcoinvenezuela.com/billete.html Ir al generador]

== Enlaces externos ==
* [http://bitcoinvenezuela.com Bitcoin Venezuela] - web oficial
* [mailto:contacto@bitcoinvenezuela.com Contacto] - email [http://pool.sks-keyservers.net:11371/pks/lookup?op=vindex&search=0x637E773CF6DDEE8F009F84616930CFE70FA4130C (PGP)]
* [https://twitter.com/btcven @btcven] - Twitter
* [https://www.facebook.com/btcven Página de Facebook]
* [https://plus.google.com/103832285759023829835/posts Google+]
* [https://bitcointalk.org/index.php?action=profile;u=70647 Usuario en Bitcointalk]

Cafe

2013-07-22T12:46:39Z

Rdymac:

BIP 0032

2013-06-22T01:16:12Z

Rdymac: /* Motivation */

{{bip}}

RECENT CHANGES:
* [16 Apr 2013] Added private derivation for i >= 0x80000000 (less risk of parent private key leakage)
* [30 Apr 2013] Switched from multiplication by I_L to addition of I_L (faster, easier implementation)
* [25 May 2013] Added test vectors

<pre>
BIP: 32
Title: Hierarchical Deterministic Wallets
Author: Pieter Wuille
Status: Draft
Type: Informational
Created: 11-02-2012
</pre>

==Abstract==

This document describes hierarchical determinstic wallets (or "HD Wallets"): wallets which can be shared partially or entirely with different systems, each with or without the ability to spend coins.

The specification is intended to set a standard for deterministic wallets that can be interchanged between different clients. Although the wallets described here have many features, not all are required by supporting clients.

The specification consists of two parts. In a first part, a system for deriving a tree of keypairs from a single seed is presented. The second part demonstrates how to build a wallet structure on top of such a tree.

==Motivation==

The Bitcoin reference client uses randomly generated keys. In order to avoid the necessity for a backup after every transaction, (by default) 100 keys are cached in a pool of reserve keys. Still, these wallets are not intended to be shared and used on several systems simultaneously. They support hiding their private keys by using the wallet encrypt feature and not sharing the password, but such "neutered" wallets lose the power to generate public keys as well.

Deterministic wallets do not require such frequent backups, and elliptic curve mathematics permit schemes where one can calculate the public keys without revealing the private keys. This permits for example a webshop business to let its webserver generate fresh addresses (public key hashes) for each order or for each customer, without giving the webserver access to the corresponding private keys (which are required for spending the received funds).

However, deterministic wallets typically consist of a single "chain" of keypairs. The fact that there is only one chain means that sharing a wallet happens on an all-or-nothing basis. However, in some cases one only wants some (public) keys to be shared and recoverable. In the example of a webshop, the webserver does not need access to all public keys of the merchant's wallet; only to those addresses which are used to receive customer's payments, and not for example the change addresses that are generated when the merchant spends money. Hierarchical deterministic wallets allow such selective sharing by supporting multiple keypair chains, derived from a single root.

==Specification: Key derivation==

===Conventions===

In the rest of this text we will assume the public key cryptography used in Bitcoin, namely elliptic curve cryptography using the field and curve parameters defined by secp256k1 (http://www.secg.org/index.php?action=secg,docs_secg). Variables below are either:
* integers modulo the order of the curve (referred to as n), serialized as 32 bytes, most significant byte first.
* coordinates of points on the curve, serialized as specified in SEC1 in compressed form: [0x02 or 0x03] + 32 byte x coordinate), where the header byte depends on the parity of the omitted y coordinate.
* byte sequences

We shall denote the compressed form of point P by χ(P), which for secp256k1 will always be 33 bytes long.

Addition (+) of two coordinates is defined as application of the EC group operation. Multiplication (*) of an integer and a coordinate is defined as repeated application of the EC group operation. The generator element of the curve is called G. The public key K corresponding to the private key k is calculated as k*G. We do not distinguish between numbers or coordinates and their serialization as byte sequences.

===Extended keys===

In what follows, we will define a function that derives a number of child keys from a parent key. In order to prevent these from depending solely on the key itself, we extend both private and public keys first with an extra 256 bits of entropy. This extension, called the chain code, is identical for corresponding private and public keys, and consists of 32 bytes.

We represent an extended private key as (k, c), with k the normal private key, and c the chain code. An extended public key is represented as (K, c), with K = k*G and c the chain code.

===Child key derivation functions===

We allow for two different types of derivation: private and public.
* Private derivation: knowledge of the private key kpar and cpar is required to compute both ki and Ki.
* Public derivation: knowledge of the public key Kpar and cpar suffices to compute Ki (but not ki).

We define the private and public child key derivation functions:
* CKD((kpar, cpar), i) → (ki, ci), defined for both private and public derivation.
* CKD'((Kpar, cpar), i) → (Ki, ci), defined only for public derivation.

We use the most significant bit of i to specify which type of derivation to use. i is encoded as a 32 bit unsigned integer, most significant byte first; '||' represents concatenation.

====Private child key derivation====

To define CKD((kpar, cpar), i) → (ki, ci):
* Check whether the highest bit (0x80000000) of i is set:
** If 1, private derivation is used: let I = HMAC-SHA512(Key = cpar, Data = 0x00 || kpar || i) [Note: The 0x00 pads the private key to make it 33 bytes long.]
** If 0, public derivation is used: let I = HMAC-SHA512(Key = cpar, Data = χ(kpar*G) || i)
* Split I = IL || IR into two 32-byte sequences, IL and IR.
* ki = IL + kpar (mod n).
* ci = IR.
In case IL ≥ n or ki = 0, the resulting key is invalid, and one should proceed with the next value for i.
[Note: this has probability lower than 1 in 2127.]

====Public child key derivation====

To define CKD'((Kpar, cpar), i) → (Ki, ci):
* Check whether the highest bit (0x80000000) of i is set:
** If 1, return error
** If 0, let I = HMAC-SHA512(Key = cpar, Data = χ(Kpar) || i)
* Split I = IL || IR into two 32-byte sequences, IL and IR.
* Ki = (IL + kpar)*G = IL*G + Kpar
* ci = IR.
In case IL ≥ n or Ki is the point at infinity, the resulting key is invalid, and one should proceed with the next value for i.

Note that the extended public key corresponding to the evaluation of CKD(kext, i) with public derivation (so with i < 0x80000000) is identical to the evaluation of CKD'(Kext, i), with Kext the extended public key corresponding to kext. Symbolically, CKD((k, c), i)*G = CKD'((k*G, c), i). This implies that CKD' can be used to derive all public keys corresponding to the private keys that CKD would find. It cannot be used to retrieve the private keys, however.

The HMAC-SHA512 function is specified in [http://tools.ietf.org/html/rfc4231 RFC 4231].

===The key tree===

The next step is cascading several CKD constructions to build a tree. We start with one root, the master extended key m. By evaluating CKD(m,i) for several values of i, we get a number of first-degree derivative nodes. As each of these is again an extended key, CKD can be applied to those as well. To shorten notation, we will write CKD(CKD(CKD(m,0x8000003),0x2),0x5) as m/3'/2/5 now.

Each leaf node in the tree corresponds to an actual keypair, while the internal nodes correspond to the collection of keypairs that descends from them. The chain codes of the leaf nodes are ignored, and only their embedded private or public key is used. Because of this construction, knowing an extended private key allows reconstruction of all descendant private keys and public keys, and knowing an extended public keys allows reconstruction of all descendant public keys derived using public derivation.

===Key identifiers===

Extended keys can be identified by the Hash160 (RIPEMD160 after SHA256) of the serialized public key, ignoring the chain code. This corresponds exactly to the data used in traditional Bitcoin addresses. It is not advised to represent this data in base58 format though, as it may be interpreted as an address that way (and wallet software is not required to accept payment to the chain key itself).

The first 32 bits of the identifier are called the fingerprint.

===Serialization format===

Extended public and private keys are serialized as follows:
* 4 byte: version bytes (mainnet: 0x0488B21E public, 0x0488ADE4 private; testnet: 0x043587CF public, 0x04358394 private)
* 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ....
* 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
* 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. This is encoded in MSB order. (0x00000000 if master key)
* 32 bytes: the chain code
* 33 bytes: the public key or private key data (0x02 + X or 0x03 + X for public keys, 0x00 + k for private keys)

This 78 byte structure can be encoded like other Bitcoin data in Base58, by first adding 32 checksum bits (derived from the double SHA-256 checksum), and then converting to the Base58 representation. This results in a Base58-encoded string of up to 112 characters. Because of the choice of the version bytes, the Base58 representation will start with "xprv" or "xpub" on mainnet, "tprv" or "tpub" on testnet.

Note that the fingerprint of the parent only serves as a fast way to detect parent and child nodes in software, and software must be willing to deal with collisions. Internally, the full 160-bit identifier could be used.

When importing a serialized extended public key, implementations must verify whether the X coordinate in the public key data corresponds to a point on the curve. If not, the extended public key is invalid.

===Master key generation===

The total number of possible extended keypairs is almost 2^512, but the produced keys are only 256 bits long, and offer about half of that in terms of security. Therefore, master keys are not generated directly, but instead from a potentially short seed value.

* Generate a seed S of a chosen length (at least 128 bits, but 256 is advised) from a (P)RNG.
* Calculate I = HMAC-SHA512(key="Bitcoin seed", msg=S)
* Split I into two 32-byte sequences, IL and IR.
* Use IL as master secret key, and IR as master chain code.
In case IL is 0 or >=n, the master key is invalid.

[[File:BIP32-derivation.png]]

==Specification: Wallet structure==

The previous sections specified key trees and their nodes. The next step is imposing a wallet structure on this tree. The layout defined in this section is a default only, though clients are encouraged to mimick it for compatibility, even if not all features are supported.

An HDW is organized as several 'accounts'. Accounts are numbered, the default account ("") being number 0. Clients are not required to support more than one account - if not, they only use the default account.

Each account is composed of two keypair chains: an internal and an external one. The external keychain is used to generate new public addresses, while the internal keychain is used for all other operations (change addresses, generation addresses, ..., anything that doesn't need to be communicated). Clients that do not support separate keychains for these should use the external one for everything.

* m/i'/0/k corresponds to the k'th keypair of the external chain of account number i of the HDW derived from master m.
* m/i'/1/k corresponds to the k'th keypair of the internal chain of account number i of the HDW derived from master m.

===Use cases===

====Full wallet sharing: m====

In cases where two systems need to access a single shared wallet, and both need to be able to perform spendings, one needs to share the master private extended key. Nodes can keep a pool of N look-ahead keys cached for external chains, to watch for incoming payments. The look-ahead for internal chains can be very small, as no gaps are to be expected here. An extra look-ahead could be active for the first unused account's chains - triggering the creation of a new account when used. Note that the name of the account will still need to be entered manually and cannot be synchronized via the block chain.

====Audits: M====

In case an auditor needs full access to the list of incoming and outgoing payments, one can share the master public extended key. This will allow the auditor to see all transactions from and to the wallet, in all accounts, but not a single secret key.

====Per-office balances: m/i'====

When a business has several independent offices, they can all use wallets derived from a single master. This will allow the headquarters to maintain a super-wallet that sees all incoming and outgoing transactions of all offices, and even permit moving money between the offices.

====Recurrent business-to-business transactions: M/i'/0====

In case two business partners often transfer money, one can use the extended public key for the external chain of a specific account (M/i'/0) as a sort of "super address", allowing frequent transactions that cannot (easily) be associated, but without needing to request a new address for each payment.
Such a mechanism could also be used by mining pool operators as variable payout address.

====Unsecure money receiver: M/i'/0====

When an unsecure webserver is used to run an e-commerce site, it needs to know public addresses that be used to receive payments. The webserver only needs to know the public extended key of the external chain of a single account. This means someone illegally obtaining access to the webserver can at most see all incoming payments, but will not (trivially) be able to distinguish outgoing transactions, nor see payments received by other webservers if there are several ones.

==Compatibility==

To comply with this standard, a client must at least be able to import an extended public or private key, to give access to its direct descendants as wallet keys. The wallet structure (master/account/chain/subchain) presented in the second part of the specification is advisory only, but is suggested as a minimal structure for easy compatibility - even when no separate accounts or distinction between internal and external chains is made. However, implementations may deviate from it for specific needs; more complex applications may call for a more complex tree structure.

==Security==

In addition to the expectations from the EC public-key cryptography itself:
* Given a public key K, an attacker cannot find the corresponding private key more efficiently than by solving the EC discrete logarithm problem (assumed to require 2128 group operations).
the intended security properties of this standard are:
* Given a child extended private key (ki,ci) and the integer i, an attacker cannot find the parent private key kpar more efficiently than a 2256 brute force of HMAC-SHA512.
* Given any number (2 <= N <= 232-1) of (index, extended private key) tuples (ij,(pj,cj)), with distinct ij's, determining whether they are derived from a common parent extended private key (i.e., whether there exists a (ppar,cpar) such that for each j in [0..N-1] CKD((ppar,cpar),ij)=(pj,cj)), cannot be done more efficiently than a 2256 brute force of HMAC-SHA512.
Note however that the following properties does not exist:
* Given a parent extended public key (Kpar,cpar) and a child public key (Ki), it is hard to find i.
* Given a parent extended public key (Kpar,cpar) and a child private key (ki) using public derivation, it is hard to find kpar.

Private and public keys must be kept safe as usual. Leaking a private key means access to coins - leaking a public key can mean loss of privacy.

Somewhat more care must be taken regarding extended keys, as these correspond to an entire (sub)tree of keys. One weakness that may not be immediately obvious, is that knowledge of the extended public key + a private key descending from it is equivalent to knowing the extended private key (i.e., every private and public key) in case public derivation is used. This means that extended public keys must be treated more carefully than regular public keys. This is the reason why accounts at the first level of the default wallet layout use private derivation, so a leak of account-specific (or below) private key never risks compromising the master.

==Test Vectors==

For more detailed information about these (such as intermediate values and other representations), see [[BIP_0032_TestVectors]]

Test vector 1

Master (hex): 000102030405060708090a0b0c0d0e0f
* [Chain m]
* ext pub: xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8
* ext prv: xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi
* [Chain m/0']
* ext pub: xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw
* ext prv: xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7
* [Chain m/0'/1]
* ext pub: xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ
* ext prv: xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs
* [Chain m/0'/1/2']
* ext pub: xpub6D4BDPcP2GT577Vvch3R8wDkScZWzQzMMUm3PWbmWvVJrZwQY4VUNgqFJPMM3No2dFDFGTsxxpG5uJh7n7epu4trkrX7x7DogT5Uv6fcLW5
* ext prv: xprv9z4pot5VBttmtdRTWfWQmoH1taj2axGVzFqSb8C9xaxKymcFzXBDptWmT7FwuEzG3ryjH4ktypQSAewRiNMjANTtpgP4mLTj34bhnZX7UiM
* [Chain m/0'/1/2'/2]
* ext pub: xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV
* ext prv: xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334
* [Chain m/0'/1/2'/2/1000000000]
* ext pub: xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy
* ext prv: xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76

Test vector 2

Master (hex): fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542
* [Chain m]
* ext pub: xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB
* ext prv: xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U
* [Chain m/0]
* ext pub: xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH
* ext prv: xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt
* [Chain m/0/2147483647']
* ext pub: xpub6ASAVgeehLbnwdqV6UKMHVzgqAG8Gr6riv3Fxxpj8ksbH9ebxaEyBLZ85ySDhKiLDBrQSARLq1uNRts8RuJiHjaDMBU4Zn9h8LZNnBC5y4a
* ext prv: xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9
* [Chain m/0/2147483647'/1]
* ext pub: xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon
* ext prv: xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef
* [Chain m/0/2147483647'/1/2147483646']
* ext pub: xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL
* ext prv: xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc
* [Chain m/0/2147483647'/1/2147483646'/2]
* ext pub: xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt
* ext prv: xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j

==Acknowledgements==

* Gregory Maxwell for the original idea of type-2 deterministic wallets, and many discussions about it.
* Alan Reiner for the implementation of this scheme in Armory, and the suggestions that followed from that.
* Mike Caldwell for the version bytes to obtain human-recognizable Base58 strings.

Cafe

2013-05-15T17:05:59Z

Rdymac: /* Taller Cliente Bitcoin: Electrum */

Cafe

2013-05-08T22:19:48Z

Rdymac: /* Curso online Primeros pasos con un monedero Bitcoin */

Cafe

2013-05-08T22:16:40Z

Rdymac:

User:Rdymac

2013-04-29T23:39:39Z

Rdymac: Created page with "I'm Randy Brito You can send me a message to [mailto:me@randybrito.com me@randybrito.com] I'm almost always on Freenode IRC #electrum, #bitcoin-ve and every other channel I ..."

I'm Randy Brito

You can send me a message to [mailto:me@randybrito.com me@randybrito.com]

I'm almost always on Freenode IRC #electrum, #bitcoin-ve and every other channel I found interesting.

== What I think I do ==

*Admin of [http://bitcoinvenezuela.com Bitcoin Venezuela]
*Member and founder of [http://cafebitcoin.com Café Bitcoin]
*I'm an [http://electrum.org/community.html Electrum collaborator]
*I [http://randybrito.com code websites]

Bitcoin Venezuela

2013-04-21T15:26:40Z

Rdymac: /* Enlaces externos */

[http://bitcoinvenezuela.com Bitcoin Venezuela] es una oficina de cambio creada el día 11 Octubre de 2012 para dar a conocer los Bitcoins en Venezuela. Esta oficina de cambio opera desde Sevilla; está presente en España y Venezuela.

== Nosotros ==

Bitcoin Venezuela es un proyecto para crear presencia de los bitcoins en este país. Nuestro objetivo principal es dar a conocer la moneda en Venezuela y establecer unas bases de conversiones para quienes las quieran seguir a las monedas internacionales.

== Venezuela ==

Venezuela se encuentra actualmente bajo un régimen socialista-comunista en el que existen restricciones para la adquisición de divisas y esto dificulta la compra/venta de productos extranjeros, así como la salida de dinero del país para viajes, compras o ahorros.

Al existir un control cambiario la cantidad de divisas (dólares, euros...) que puede adquirir una persona a precio de mercado es excesivamente limitada; disparándose así el precio, debido a la alta demanda, de estas modenas extranjeras en el mercado paralelo.
El precio actual del Dólar regulado (Dólar CADIVI) es de 4,29 Bs [http://bitcoinvenezuela.com/venezuela.php (ver precio actualizado)], pero comprarlos en la calle a este precio es imposible. El precio que se maneja es el del Dólar Paralelo (Dólar Permuta, Lechugas...) que ronda los 13,95 Bs [http://bitcoinvenezuela.com/venezuela.php (ver precio actualizado)].

== Servicios y herramientas ==

=== Generador de billetes/cheques en jQuery ===

Existen algunas herramientas para generar billetes/cheques de Bitcoin para poder usarlos como pago físico, pero estas están recibiendo muchas críticas debido al uso de lenguajes de programación que funcionan desde el servidor (PHP, Python, etc) y el miedo que esto supone al existir la posibilidad de enviar los datos al servidor.

Bitcoin Venezuela ha creado una herramienta que funciona con jQuery y por tanto ningún dato introducido en el formulario es enviado al servidor para la creación del billete. Al usar jQuery funciona desde el navegador cliente y no es necesario instalarlo en un servidor para funcionar. Se puede utilizar sin conexión a internet para mayor seguridad una vez cargada la página.

Consiste en dos campos de texto, uno para la Dirección Bitcoin y otro para la Llave Privada. Una vez introducidos se genera el billete y simplemente hay que imprimirlo.

[http://bitcoinvenezuela.com/billete.html Ir al generador]

== Enlaces externos ==
* [http://bitcoinvenezuela.com Bitcoin Venezuela] - web oficial
* [mailto:contacto@bitcoinvenezuela.com Contacto] - email
* [https://twitter.com/btcven @btcven] - twitter
* [https://www.facebook.com/btcven Página de Facebook]

2013-04-04T14:29:03Z

2013-02-23T01:58:29Z

Rdymac:

Don't add everyone who's going in the "Who?" column, just prominent Bitcoin members and organizers. Also see [http://bitcoin.meetup.com bitcoin.meetup.com]. Also see [[Conferences]].

Keep an eye on the [http://bitcointalk.org/index.php?board=86.0 Meetups] forum board on BitcoinTalk for announcements.

{| class="wikitable"
|-
! Group
! When?
! Where?
! Who?
! Other Notes
|-
| [http://www.meetup.com/bitcoins/ Bitcoin NYC]
| monthly
| [http://www.xcubicle.com/ xCubicle Hackerspace - New York, NY]
| Any and all Bitcoin aficionados.
|
|-
|-
| [http://hitspace.org/ HIT Space - Hack it Together]
| monthly
| [http://hitspace.org/where-we-are/ HIT Space - Porto, Portugal]
| Hackerspace members and anyone who want to join us
| send us an email geral[at]hitspace.org
|-
|-
| [http://metalab.at/wiki/Bitcoins Vienna, Austria]
| monthly - check the [http://metalab.at/wiki/Bitcoins wiki] or subscribe to the [http://lists.keisanki.net/listinfo/bitcoin mailinglist]
| [http://metalab.at/wiki/Lage Metalab], Vienna hacker space, Rathausstraße 6, 1010 Wien
| Bitcoin Group Austria
|
|-
| [http://brmlab.cz brmlab, prague hackerspace]
| 14th Nov 2011
28th Nov 2011
([http://brmlab.cz/event/bitcoin_seminar])
| [http://brmlab.cz/place Brmlab, Bubenska 1]
| brmlab crew, slush, genjix
|
|-
| [http://www.facebook.com/groups/175596065827848/ Bitcoin Boston]
| Bi-weekly on Saturday or Sunday ([http://www.facebook.com/groups/175596065827848/ See Facebook page])
| Starbucks, Harvard Square
| Anyone who wants to come!
| So far our meetings have been pretty sporadic, but we hope to gain some regularity soon...
|-
| [http://www.meetup.com/bitcoin New York Bitcoin Users]
| 6:00 PM, 3rd Sunday of every month ([http://www.meetup.com/bitcoin/events/past past meetings])
| OnlyOneTV Studios - 290 Fifth Ave New York, NY
| Bruce Wagner (Organizer) and others
|
|-
|-
| [http://www.meetup.com/bitcoin New York Bitcoin Users]
| 6:00 PM, every Wednesday of every month ([http://www.meetup.com/bitcoin/events/past past meetings])
| Just Sweet Dessert House - 83 Third Ave New York, NY
| Yifu Guo (Organizer) and crew
| hosted by Bitsyncom, the people behind [[Bitnavigator]], walk-ins welcome;
|-
|[http://www.meetup.com/MichiganBitcoinMeetup Michigan Bitcoin Meetup]
|
|
|Kinnard Hockenhull (Organizer)
|Sponsored by [[BitBox]]
|-
| [http://www.meetup.com/PhillyBitcoin Philadelphia Bitcoin User Group]
| TBD
| TBD
| Brian Cohen (Organizer) and others
|
|-
| [http://www.meetup.com/BitcoinDC Washington, DC Bitcoin Users]
| 7:00 PM, 1st Monday of every month ([http://www.meetup.com/BitcoinDC/#past past meetings])
| Northside Social, 3211 Wilson Blvd Arlington, VA
| [[User:Dduane|Darrell Duane]] (Organizer) and others
|
|-
| [http://www.meetup.com/Silicon-Valley-Bitcoin-Users Silicon Valley Bitcoin Users]
| 7:00 PM, Tuesday, June 14, 2011 ([http://www.meetup.com/Silicon-Valley-Bitcoin-Users/events/past past meetings])
| 140B S Whisman Road Mountain View, CA
| Brian Mcqueen and others
|
|-
| [http://www.meetup.com/BitcoinChicago Chicago]
| No regular schedule yet ([http://www.meetup.com/BitcoinChicago/events/past past meetings])
| Sunnyvale Art Gallery Cafe, 251 W El Camino Real Sunnyvale, CA
| Igor
|
|-
| [http://www.meetup.com/denver-bitcoin Denver]
| First meeting June 4th, 2011 ([http://www.meetup.com/denver-bitcoin/events/past past meetings])
| Gypsy House Cafe - 1279 Marion St Denver, CO
| bearbones
|
|-
| [http://www.meetup.com/bitcoinSF Bitcoin SF]
| Saturday, June 4, 2011 ([http://www.meetup.com/bitcoinSF past meetings])
| SFSU - 1600 Holloway Ave. San Francisco, CA
| Brian Mcqueen and others
|
|-
| [http://www.meetup.com/Los-Angeles-Digital-Currency-Innovators-Group Los Angeles Digital Currency Innovators]
| Thursday July 7th, 2011, 7 PM
| (mt)/Media Temple, Culver City, CA
| [[User:sgornick|Stephen Gornick]] (Interim organizer) and others
| Seeking meetup coordinator
|-
| [http://www.meetup.com/Las-Vegas-Bitcoin-Users Las Vegas Bitcoin Users]
| Monthly, check calendar ([http://www.meetup.com/Las-Vegas-Bitcoin-Users/#upcomming meetings])
| Putters, 6945 South Rainbow Boulevard, Las Vegas, NV
| Mark Russell, Julian Tosh
|
|-
| [https://www.facebook.com/groups/195492163844669/ Free State Bitcoin Consortium]
| Every Saturday, at 6:30 PM
| Strange Brew Tavern, Manchester, NH
| ben-abuya (organizer)
| Weekly
|-
| [https://www.facebook.com/groups/195492163844669/ Twin Cities Users]
| Friday, June 10, 2011, 6:30 PM
| Joule - 1200 Washington Ave S Minneapolis, MN
| Mac Manson
|
|-
| [http://www.meetup.com/Portland-Bitcoin-Meetup-Users Portland Bitcoin Users Meetup Group]
| forming
|
| Steven Wagner
|
|-
| [http://www.meetup.com/Bitcoin-Orlando Bitcoin Orlando]
| ([http://www.meetup.com/Bitcoin-Orlando#past past meetings])
| Frank & Steins 150 S. Magnolia Ave, Orlando, FL
| Antonio Gallippi
|
|-
| [http://www.hive13.org/?p=310 Hive13 Hackerspace]
| Bitcoin Exchange, Every Tuesday, 7:30 PM
| Hive13 - 2929 Spring Grove Avenue, Cincinnati, OH
|
|
|-
| [https://www.facebook.com/bitcoinaus Bitcoin Australia]: Melbourne
| [https://www.facebook.com/events/345430765511234/ Wednesday, 23 May 2012, 18:45]
| Melbourne CBD(TBA)
| Facebook, IRC, Bitcointalk Forum...
|
|-
| [[Bitcoin:Tokyo meetup|Tokyo]]
| Usually first monday of the month
| Shibuya
| Roger Ver (Organizer) and others
|
|-
| [http://meetup.com/Bitcoin-Canada Vancouver Canada]
| ([http://www.meetup.com/Bitcoin-Canada/#past past meetings])
| The Brickhouse - 730 Main St.
| humble (and others)
|
|-
| [https://groups.google.com/d/forum/bitcoin-switzerland Zurich/Geneva Switzerland]
| Semi-regular, about once a month
| Oliver Twist Pub, Zurich; Lord Nelson Pub, Geneva
| Stefan Thomas (WeUseCoins), Mike Hearn (BitcoinJ), bitdragon, Luzius (Wuala), more ...
|
|-
| Seattle Bitcoin Meetup
| [http://www.meetup.com/SeattleBitCoin/ Semi-regularly].
| [http://maps.google.com/maps?q=cafe+solstice&daddr=4116+University+Way,+Seattle,+WA+98105-6214&hl=en&ll=47.657424,-122.31313&spn=0.007328,0.01929&gl=us&view=map&geocode=CRT9Bdg7zX3vFdcx1wIdWqa1-CFcJ9qrr9CcEQ&t=h&z=16 Solstice Cafe, 2pm]
| [https://bitcointalk.org/index.php?action=profile;u=36217 indolering]
|
|-
| [https://bitcointalk.org/index.php?topic=42262.0 Munich Germany]
| Semi-regular, about once a month
| Optimolwerke
|
|
|-
| [http://www.meetup.com/bitcoin-il/ Israel Bitcoin Meetup Group]
| Occasional
| TBD
| Meni Rosenfeld
|
|-
| [http://www.meetup.com/Dallas-Bitcoin-User-Meetup/ Dallas Bitcoin Meetup Group]
| Biweekly on Saturdays, 6:00PM
| [http://freemandallas.com/ The Free Man Cajun Cafe]
| Justus Ranvier (organizer)
|
|-
| [https://en.bitcoin.it/wiki/Cafe Bitcoin Café Sevilla]
|
|
| Randy Brito (rdymac)
|
|-
|}

==See Also==

* [http://hackerspaces.org/wiki/List_of_Hacker_Spaces List of Hacker Spaces]

[[Category:Local]]

[[de:Treffen]]