mirror of
https://github.com/bitcoin/bips.git
synced 2024-11-19 18:00:08 +01:00
959fecc15b
- Update all Accepted status to Proposed (renamed status) - The BIP Comments preamble headers added to every BIP - The License preamble headers have been added to all BIPs with a Copyright section
129 lines
4.6 KiB
Plaintext
129 lines
4.6 KiB
Plaintext
<pre>
|
|
BIP: 122
|
|
Layer: Applications
|
|
Title: URI scheme for Blockchain references / exploration
|
|
Author: Marco Pontello <marcopon@gmail.com>
|
|
Comments-Summary: No comments yet.
|
|
Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0122
|
|
Status: Draft
|
|
Type: Standards Track
|
|
Created: 2015-08-29
|
|
License: PD
|
|
Post-History: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-August/010712.html
|
|
</pre>
|
|
|
|
==Abstract==
|
|
|
|
This BIP proposes a URI scheme for looking up blocks, transactions and addresses on a Blockchain explorer, or in general to make proper Blockchain references.
|
|
|
|
==Motivation==
|
|
|
|
The purpose of this URI scheme is to enable users to handle all the requests for details about blocks, transactions, etc. with their preferred tool (being that a web service or a local application).
|
|
Currently a Bitcoin client usually points to an arbitrary blockchain explorer when the user looks for the details of a transaction or allows the user to choose from a set of alternatives.
|
|
Resorting to copy + paste into a browser is often required.
|
|
The same happens with posts and messages that reference some particular txs or blocks, if they provide links at all.
|
|
|
|
==Specification==
|
|
|
|
The URI follow this form:
|
|
|
|
<nowiki>blockchain:[//<chain>]/<tx|block|address>/<hash></nowiki>
|
|
|
|
Where:
|
|
|
|
{| class="wikitable"
|
|
! style="text-align: center;" | Element
|
|
! colspan="2" style="text-align: center;" | Description
|
|
! Required?
|
|
|-
|
|
| chain
|
|
| colspan="2" | '''chain ID''' (see below) of the desired chain, leading 0s included. If omitted (which would be the usual case), Bitcoin main net is assumed.
|
|
| optional
|
|
|-
|
|
| rowspan="3" | type
|
|
| tx
|
|
| for transactions.
|
|
| rowspan="3" | required
|
|
|-
|
|
| block
|
|
| for blocks (supports both hash or height).
|
|
|-
|
|
| address
|
|
| for addresses.
|
|
|-
|
|
| hash
|
|
| colspan="2" | the relevant hash to refer to (leading zeros included), or block height.
|
|
| required
|
|
|}
|
|
|
|
====ABNF grammar====
|
|
|
|
<pre>
|
|
blockchainuri = "blockchain:" ["//" chain] "/" object
|
|
object = ("tx" "/" hash) / ("block" "/" (hash / blockheight)) /
|
|
("address" "/" address)
|
|
chain = hash
|
|
hash = 64HEXDIG
|
|
blockheight = 1*15DIGIT ; 15 is somehow arbitrary, i.e. a "small" int.
|
|
address = base58 ; https://en.wikipedia.org/wiki/Base58
|
|
</pre>
|
|
|
|
----
|
|
===Definition of chain ID===
|
|
|
|
The '''chain ID''' of a chain is the block hash of the corresponding genesis block. For forked chains, it's the block hash of the first block after fork.
|
|
|
|
So, for example:
|
|
<pre>
|
|
Bitcoin main : 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
|
|
Bitcoin test : 000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943
|
|
Bitcoin regtest: 0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206
|
|
</pre>
|
|
|
|
An example of forked chain (Feathercoin, that forked Litecoin):
|
|
|
|
<img src=bip-0122/chainid.png></img>
|
|
|
|
<pre>
|
|
Litecoin : 12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2
|
|
Feathercoin: fdbe99b90c90bae7505796461471d89ae8388ab953997aa06a355bbda8d915cb
|
|
</pre>
|
|
|
|
|
|
==Examples==
|
|
|
|
A transaction on Bitcoin main net:
|
|
blockchain:/tx/b462ae6eb8bdae2e060239a2a3ea5d9c3e0f9ef34d9717beb2dcf0ed42cee7da
|
|
|
|
A block on Bitcoin main net:
|
|
blockchain:/block/00000000000000000119af5bcae2926df54ae262e9071a94a99c913cc217cc72
|
|
or
|
|
blockchain:/block/372338
|
|
|
|
An address on Bitcoin main net:
|
|
blockchain:/address/16EW6Rv9P9AxFDBrZV816dD4sj1EAYUX3f
|
|
|
|
A transaction on Bitcoin test net:
|
|
blockchain://000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943/tx/3b95a766d7a99b87188d6875c8484cb2b310b78459b7816d4dfc3f0f7e04281a
|
|
|
|
==Rationale==
|
|
|
|
From the point of view of a wallet (or other Blockchain related tool) developers which need to reference Blockchain data, using this scheme mean that he can simply make it a `blockchain:` link without having to worry about any specific Blockchain explorer or provide a means for the user to select one.
|
|
|
|
Blockchain explorers in turn will simply offer to handle the `blockchain:` URI schema, the first time the user visit their website, or launch/install the application, or even set themselves if there isn't already one.
|
|
|
|
Users can link directly to their preferred block explorer (avoiding copy + paste which can be awkward on mobile devices).
|
|
|
|
== Sample implementation ==
|
|
|
|
[https://github.com/MarcoPon/blockchain-exploration Demo Blockchain: URI handler on GitHub]
|
|
|
|
==Acknowledgements==
|
|
|
|
Thanks to Btc Drak for suggesting support for different networks and Jorge Timon for the suggestion that we could identify each network by its genesis block hash.
|
|
Thanks to Richard Moore, Matt Whitlock, Andreas Schildbach for help with the structure and hierarchy of the URI scheme.
|
|
|
|
==Copyright==
|
|
|
|
This document is placed in the public domain.
|