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88 lines
2.9 KiB
88 lines
2.9 KiB
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BIP: 72
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Title: bitcoin: uri extensions for Payment Protocol
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Author: Gavin Andresen <gavinandresen@gmail.com>
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Status: Draft
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Type: Standards Track
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Created: 2013-07-29
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-----------------------------------------------------
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[[abstract]]
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Abstract
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~~~~~~~~
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This BIP describes an extension to the bitcoin: URI scheme (BIP 21) to
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support the payment protocol (BIP 70).
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[[motivation]]
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Motivation
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~~~~~~~~~~
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Allow users to click on a link in a web page or email to initiate the
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payment protocol, while being backwards-compatible with existing bitcoin
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wallets.
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[[specification]]
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Specification
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~~~~~~~~~~~~~
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The bitcoin: URI scheme is extended with an additional, optional "r"
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parameter, whose value is a URL from which a PaymentRequest message
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should be fetched (characters not allowed within the scope of a query
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parameter must be percent-encoded as described in RFC 3986 and
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bip-0021).
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If the "r" parameter is provided and backwards compatibility is not
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required, then the bitcoin address portion of the URI may be omitted
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(the URI will be of the form: bitcoin:?r=... ).
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When Bitcoin wallet software that supports this BIP receives a bitcoin:
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URI with a request parameter, it should ignore the bitcoin
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address/amount/label/message in the URI and instead fetch a
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PaymentRequest message and then follow the payment protocol, as
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described in BIP 70.
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Bitcoin wallets must support fetching PaymentRequests via http and https
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protocols; they may support other protocols. Wallets must include an
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"Accept" HTTP header in HTTP(s) requests (as defined in RFC 2616):
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------------------------------------------
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Accept: application/bitcoin-paymentrequest
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------------------------------------------
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If a PaymentRequest cannot be obtained (perhaps the server is
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unavailable), then the customer should be informed that the merchant's
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payment processing system is unavailable. In the case of an HTTP
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request, status codes which are neither success nor error (such as
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redirect) should be handled as outlined in RFC 2616.
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[[compatibility]]
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Compatibility
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~~~~~~~~~~~~~
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Wallet software that does not support this BIP will simply ignore the r
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parameter and will initiate a payment to bitcoin address.
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[[examples]]
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Examples
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~~~~~~~~
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A backwards-compatible request:
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------------------------------------------------------------------------------------------------------
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bitcoin:mq7se9wy2egettFxPbmn99cK8v5AFq55Lx?amount=0.11&r=https://merchant.com/pay.php?h%3D2a8628fc2fbe
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------------------------------------------------------------------------------------------------------
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Non-backwards-compatible equivalent:
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--------------------------------------------------------
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bitcoin:?r=https://merchant.com/pay.php?h%3D2a8628fc2fbe
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--------------------------------------------------------
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[[references]]
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References
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~~~~~~~~~~
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http://www.w3.org/Protocols/rfc2616/rfc2616.html[RFC 2616] : Hypertext
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Transfer Protocol -- HTTP/1.1
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