Coinprism - Revision history

NotATether: Coinprism History — shutdown ~31 Mar 2018; Defunct cats; drop features dump

2026-09-09T12:48:32Z

Coinprism History — shutdown ~31 Mar 2018; Defunct cats; drop features dump

@@ Line 9: / Line 9: @@
 '''Coinprism''' was a web wallet for [[Colored Coins]] and ordinary bitcoin. It implemented the Open Assets protocol and offered issuance, transfer, exploration, and related developer tools for blockchain assets on bitcoin. The service shut down around the end of March 2018. Users were told to withdraw funds and export private keys before closure.
-==Colored Coins==
+== History ==
-Colored coins allow you to store assets on the [[Coinprism.info|Bitcoin blockchain]]. There are many interesting applications to colored coins. You could have an IPO on the blockchain by issuing shares as colored coins, and send them to your shareholders. The shares could then be traded almost instantaneously and for free through the Bitcoin blockchain. You could have smart properties represented by colored coins. You could store your house on the blockchain by issuing a single coin, then the ownership of the house can be transferred with a simple Bitcoin transaction.
+By late March 2018 the site warned that the service would shut down and instructed users to withdraw and export keys. CoinDesk reported the closure for that weekend (around 31 March 2018). Founder Flavien Charlon cited a weak long-term business model, the shift of token activity toward ERC-20-style platforms, fee and confirmation unpredictability on bitcoin for asset use cases, and rising regulatory scrutiny of token services.<ref name="cd">[https://www.coindesk.com/markets/2018/03/29/colored-coins-startup-coinprism-is-shutting-down CoinDesk: Coinprism is shutting down (Mar 2018)]</ref>
-==Specifications==
+Colored-coin and bitcoin balances lived on the bitcoin blockchain. Access through Coinprism's hosted interface ended with the shutdown. Users who exported keys could continue to manage outputs with compatible Open Assets tooling.
-Coinprism was an implementation of the [[Colored Coins#Open_Assets|Open Assets protocol]] and it was compatible with the open source Colored Coins wallet [[Colorcore]].
+== Products (historical) ==
-==Features==
+== External links ==
-* Issue any assets
+* [https://www.coindesk.com/markets/2018/03/29/colored-coins-startup-coinprism-is-shutting-down CoinDesk: Coinprism shutting down]
-* Send and receive assets and bitcoins
+* [https://web.archive.org/web/20180301000000/https://www.coinprism.com/ Coinprism website (archived)]
 * [https://github.com/OpenAssets/open-assets-protocol Open Assets protocol]
-* [https://github.com/OpenAssets/openassets Open Assets Python library]
+* [https://github.com/OpenAssets/colorcore Colorcore]
-==References==
+== References ==
 <references />
-==Screenshots==
+[[Category:Defunct companies]]
-<gallery>
+[[Category:Defunct services]]
 [[Category:EWallets]]
 [[Category:Wallets]]

NotATether: Coinprism — past-tense lead; remove shutdown warning ambox

2026-09-09T12:43:29Z

Coinprism — past-tense lead; remove shutdown warning ambox

← Older revision		Revision as of 12:43, 9 September 2026
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	{{~~ambox~~		{{infobox company\|image=[[Image:Logo_Coinprism.png\|300px]]\|name=Coinprism
	\| ~~type~~ = ~~warning~~		\|founder=Flavien Charlon
	\| ~~text~~ = ~~'''Warning: Coinprism shut down on~~ March ~~31,~~ 2018~~, and is no longer operational.''' Users can no longer access its services.<ref>https://~~web~~.archive.org/web/20180301000000/~~https://www.coinprism.com~~/</ref>~~		\|foundation=March 2014
	~~Be cautious of any websites or projects claiming to be Coinprism, as they may be impersonators or scams.~~		\|defunct=March 2018
			\|industry=Colored Coins web wallet
			\|website=https://www.coinprism.com
	}}		}}

			'''Coinprism''' was a web wallet for [[Colored Coins]] and ordinary bitcoin. It implemented the Open Assets protocol and offered issuance, transfer, exploration, and related developer tools for blockchain assets on bitcoin. The service shut down around the end of March 2018. Users were told to withdraw funds and export private keys before closure.
	~~{{infobox company\|image=[[Image:Logo_Coinprism.png‎‎\|300px]]\|name=Coinprism~~
	~~\|founder=Flavien Charlon~~
	~~\|foundation=March 13, 2014~~
	~~\|industry=[[EWallet]]~~
	~~\|website=https://web.archive.org/web/20140526221215/https://www.coinprism.com/~~
	~~}}[https://web.archive.org/web/20140526221215/https://www.coinprism.com/~~ Coinprism] was a ~~Colored Coins~~ web wallet~~. Coinprism was similar to other web wallets, except you could store, issue, send and receive~~ [[Colored Coins]] and ~~not only normal Bitcoins~~.

	==Colored Coins==		==Colored Coins==

WikiR: Added shutdown warning for Coinprism (March 31, 2018), replaced links with Wayback Machine archives for reference.

2025-02-22T13:35:49Z

Added shutdown warning for Coinprism (March 31, 2018), replaced links with Wayback Machine archives for reference.

← Older revision		Revision as of 13:35, 22 February 2025
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			{{ambox
			\| type = warning
			\| text = '''Warning: Coinprism shut down on March 31, 2018, and is no longer operational.''' Users can no longer access its services.<ref>https://web.archive.org/web/20180301000000/https://www.coinprism.com/</ref>
			Be cautious of any websites or projects claiming to be Coinprism, as they may be impersonators or scams.
			}}


	{{infobox company\|image=[[Image:Logo_Coinprism.png‎‎\|300px]]\|name=Coinprism		{{infobox company\|image=[[Image:Logo_Coinprism.png‎‎\|300px]]\|name=Coinprism
	\|founder=Flavien Charlon		\|founder=Flavien Charlon
	\|foundation=March 13, 2014		\|foundation=March 13, 2014
	\|industry=[[EWallet]]		\|industry=[[EWallet]]
	\|website=https://www.coinprism.com		\|website=https://web.archive.org/web/20140526221215/https://www.coinprism.com/
	}}[https://www.coinprism.com Coinprism] was a Colored Coins web wallet. Coinprism was similar to other web wallets, except you could store, issue, send and receive [[Colored Coins]] and not only normal Bitcoins.		}}[https://web.archive.org/web/20140526221215/https://www.coinprism.com/ Coinprism] was a Colored Coins web wallet. Coinprism was similar to other web wallets, except you could store, issue, send and receive [[Colored Coins]] and not only normal Bitcoins.

	==Colored Coins==		==Colored Coins==
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	==External Links==		==External Links==

	* [https://www.coinprism.com Coinprism] Official website		* [https://web.archive.org/web/20140526221215/https://www.coinprism.com/ Coinprism] Official website
	* [https://www.coinprism.info Coinprism.info] Blockchain explorer & asset directory		* [https://www.coinprism.info Coinprism.info] Blockchain explorer & asset directory
	* [https://coinprism.desk.com/ Coinprism Support Center] Support Center		* [https://coinprism.desk.com/ Coinprism Support Center] Support Center

Mmortal03 at 07:37, 16 May 2018

2018-05-16T07:37:58Z

← Older revision		Revision as of 07:37, 16 May 2018
Line 4:		Line 4:
	\|industry=[[EWallet]]		\|industry=[[EWallet]]
	\|website=https://www.coinprism.com		\|website=https://www.coinprism.com
	}}[https://www.coinprism.com Coinprism] is a Colored Coins web wallet. Coinprism is similar to other web wallets, except you ~~can~~ store, issue, send and receive [[Colored Coins]] and not only normal Bitcoins.		}}[https://www.coinprism.com Coinprism] was a Colored Coins web wallet. Coinprism was similar to other web wallets, except you could store, issue, send and receive [[Colored Coins]] and not only normal Bitcoins.

	==Colored Coins==		==Colored Coins==

	Colored coins allow you to store assets on the [[Coinprism.info\|Bitcoin blockchain]]. There are many interesting applications to colored ~~coin~~. You could have an IPO on the blockchain by issuing shares as a colored coins, and send them to your shareholders. The shares ~~can~~ then be traded almost instantaneously and for free through the Bitcoin blockchain. You could have smart properties represented by colored coins. You could store your house on the blockchain by issuing a single coin, then the ownership of the house can be transferred with a simple Bitcoin transaction.		Colored coins allow you to store assets on the [[Coinprism.info\|Bitcoin blockchain]]. There are many interesting applications to colored coins. You could have an IPO on the blockchain by issuing shares as colored coins, and send them to your shareholders. The shares could then be traded almost instantaneously and for free through the Bitcoin blockchain. You could have smart properties represented by colored coins. You could store your house on the blockchain by issuing a single coin, then the ownership of the house can be transferred with a simple Bitcoin transaction.

	==Specifications==		==Specifications==

	Coinprism ~~is implementing~~ the [[Colored Coins#Open_Assets\|Open Assets protocol]] and it is compatible with the open source Colored Coins wallet [[Colorcore]].		Coinprism was an implementation of the [[Colored Coins#Open_Assets\|Open Assets protocol]] and it was compatible with the open source Colored Coins wallet [[Colorcore]].

	==Features==		==Features==
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	* New special [http://blog.coinprism.com/2014/12/15/solving-the-issue-of-uncoloring-colored-coins-through-a-new-address-type/ address format] for colored coins: December 15th 2014		* New special [http://blog.coinprism.com/2014/12/15/solving-the-issue-of-uncoloring-colored-coins-through-a-new-address-type/ address format] for colored coins: December 15th 2014
	* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>
			* Coinprism shut down: March 31st, 2018<ref>[https://www.coindesk.com/blockchain-startup-coinprism-to-shut-down-in-2-days/ 'Colored Coins' Startup Coinprism Is Shutting Down]</ref>

	==External Links==		==External Links==

Flavos: /* History */

2015-04-06T19:01:34Z

History

← Older revision		Revision as of 19:01, 6 April 2015
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	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>
	* New special [http://blog.coinprism.com/2014/12/15/solving-the-issue-of-uncoloring-colored-coins-through-a-new-address-type/ address format] for colored coins: December 15th ~~2015~~		* New special [http://blog.coinprism.com/2014/12/15/solving-the-issue-of-uncoloring-colored-coins-through-a-new-address-type/ address format] for colored coins: December 15th 2014
	* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>

Flavos: /* History */

2015-04-06T18:59:45Z

History

← Older revision		Revision as of 18:59, 6 April 2015
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	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>
			* New special [http://blog.coinprism.com/2014/12/15/solving-the-issue-of-uncoloring-colored-coins-through-a-new-address-type/ address format] for colored coins: December 15th 2015
	* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>

Flavos: /* History */

2015-04-06T13:01:50Z

History

← Older revision		Revision as of 13:01, 6 April 2015
Line 45:		Line 45:
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>
	* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/]:: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/ offline storage with TREZOR]: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>

	==External Links==		==External Links==

Flavos: /* History */

2015-04-06T13:01:26Z

History

← Older revision		Revision as of 13:01, 6 April 2015
Line 45:		Line 45:
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ colored coin dividends]: November 17th 2014<ref>[http://www.coindesk.com/ethereum-counterparty-fork-colored-coins/ Coinprism debuts dividends feature]</ref>
	* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>		* Coinprism adds support for [http://blog.coinprism.com/2014/11/17/colored-coin-denominated-dividends/ offline storage with Armory]: November 24th 2014<ref>[http://bravenewcoin.com/news/coinprism-adds-armory-support/ Coinprism Adds Armory Support]</ref>
			* Coinprism adds support for [http://blog.coinprism.com/2015/03/09/trezor-with-coinprism/]:: March 9th 2015<ref>[http://bitcoinist.net/coinprism-trezor-compatible/ Coinprism is now TREZOR Compatible]</ref>

	==External Links==		==External Links==

Flavos: /* Features */

2015-04-06T12:59:24Z

Features

← Older revision		Revision as of 12:59, 6 April 2015
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	* Issue bitcoin and colored coin dividends		* Issue bitcoin and colored coin dividends
	* Optional miners' fee		* Optional miners' fee
	* Offline storage (Armory)		* Offline storage (Armory, TREZOR)
	* [https://play.google.com/store/apps/developer?id=Coinprism Android App]		* [https://play.google.com/store/apps/developer?id=Coinprism Android App]

Psionides: Fixed link to Coinprism block explorer ("Coinprism.info" wiki page just redirects back here)

2014-12-10T12:12:58Z

Fixed link to Coinprism block explorer ("Coinprism.info" wiki page just redirects back here)

← Older revision		Revision as of 12:12, 10 December 2014
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	* Issue any assets		* Issue any assets
	* Send and receive assets and bitcoins		* Send and receive assets and bitcoins
	* [~~[Coinprism~~.info\|Full block explorer]]		* [http://www.coinprism.info Full block explorer]
	* Two-factor authentication		* Two-factor authentication
	* Export and backup wallet		* Export and backup wallet