https://www.iana.org/assignments/uri-schemes/prov/bitcoin(last updated 2012-09-23)
Resource Identifier (RI) Scheme name: bitcoin
Status: provisional
Scheme syntax:
bitcoin:<address>[?[amount=<size>][&][label=<label>][&][message=<message>]]
Scheme semantics:
Send money to a Bitcoin address
Encoding considerations:
Unknown, use with care.
Applications/protocols that use this scheme name:
Interoperability considerations:
Unknown, use with care.
May be unsuitable for open use on the public internet.
Security considerations:
Unknown, use with care.
This scheme claims to be used to send money, which implies a commitment
by the client user; as described is not clear that this scheme does not
violate the web principle of safe interactions
(
http://www.w3.org/TR/webarch/#safe-interaction). In the absence of more
details, it should be considered very dangerous to dereference a bitcoin
URI.
Contact:
Registering party: Dave Thaler <dthalerµsoft.com>
Scheme creator: Bitcoin URI Scheme
Author/Change controller:
Either the registering party or someone who is verified to represent
the scheme creator. See previous answer.
References:
http://en.wikipedia.org/wiki/Bitcoin,
https://en.bitcoin.it/wiki/BIP_0021 (file created 2012-09-23)