Bitcoin symbol

There is no official Bitcoin symbol as of December 2010, however the BTC abbreviation is the most universally accepted form.

Unicode symbol

There is a discussion over which Unicode symbol might be the best suited for bitcoin.

To type Unicode characters, refer to:

• Microsoft Windows Unicode Input
• How to easily type the circled B symbol on a Mac

It has led to the following options:

Proposed character	Description & Pros & Cons	Unicode name	Unicode decimal input	Unicode hex input
฿	Pros: Gives a currency-like look (it is the symbol for an existing currency, the Thai Baht, but other currency symbols often get reused, like the $); displayed correctly on all known OSes Cons: It is already used for the Thai currency, and might confuse people	THAI CURRENCY SYMBOL BAHT		Alt +0E3F
Ⓑ	Pros: Similar to current bitcoin.org logo	CIRCLED LATIN CAPITAL LETTER B		Alt +24B7
B⃫		LATIN CAPITAL LETTER B + COMBINING LONG DOUBLE SOLIDUS OVERLAY	U+0042 U+20EB
B⃦		LATIN CAPITAL LETTER B + COMBINING DOUBLE VERTICAL STROKE OVERLAY	U+0042 U+20E6
ⓑ	Pros: Small b represent the unit bit in computer where capital B is Byte Cons: Small fonts are harder to read	CIRCLED LATIN SMALL LETTER B		Alt +24D1
ᴃ		LATIN LETTER SMALL CAPITAL BARRED B		Alt +1D03
Ƀ		LATIN CAPITAL LETTER B WITH STROKE		Alt +0243
B⃦
␢		(Unicode Block: Control Pictures) BLANK SYMBOL (graphic for space)		Alt +2422
币	pronounced "bi", combines "b", turned "c" and "T", many Chinese users, also 网民币 - Wangminbi, "The Netizen's Currency" (pun on Renminbi)	Chinese for "Currency"		U+5E01
β	Pros: Fluid look and easy to write; Lowercase	GREEK SMALL LETTER BETA		Alt +03B2
¤		CURRENCY SIGN	Alt 0164	Alt +00A4
Ƅ		LATIN CAPITAL LETTER TONE SIX		Alt +0184
∄		(Unicode Block: Mathematical Operators) THERE DOES NOT EXIST		Alt +2204
ઘ		GUJARATI LETTER GHA (Indo-Aryan language)		Alt +0A98
ϭ		(Unicode Block: Greek and Coptic) COPTIC SMALL LETTER SHIMA		Alt +03ED
ɸ	contains 0 and I	Greek small Theta		U+0278
∆	delta for "digital"	Greek capital Delta		U+0394
	Cons: Does not exist in the Unicode standard
	Cons: Does not exist in the Unicode standard
ⓢ	Purposed as a smaller unit of bitcoin. E.g. A hundredth of a bitcoin	CIRCLED LATIN SMALL LETTER S		Alt +24E2
≡	three bars like three bits			Alt + 240
the b'at	Pros: Is round like a coin. Contains the B for Bitcoin. Borrows a style widelly associated with the internet. Not used for other meanings. Cons: Does not exist in the Unicode standard
A 'C' with '1' and '0' inside [[1]]	Cons: Does not exist in the Unicode standard
A 'C' with a 'circle' and 'dot' inside [[2]]	Cons: Does not exist in the Unicode standard
◪		(Unicode Block: Geometric Shapes) SQUARE WITH LOWER RIGHT DIAGONAL HALF BLACK		Alt +25EA
[[3]][[4]]	Cons: Does not exist in the Unicode standard
☺		WHITE SMILING FACE		Alt +263A
☻		BLACK SMILING FACE		Alt +263B
㋡		CIRCLED KATAKANA TU' (Japanese)		Alt +32E1