BIP 175: Pay to Contract Protocol #586

pull omarshibli wants to merge 12 commits into bitcoin:master from commerceblock:master changing 2 files +259 −0

omarshibli commented at 1:48 pm on September 6, 2017: contributor

This proposal was submitted to the mailing list on August 14th, we got feedback and addressed the concerns, I am now requesting a BIP number.
added Pay to Contract Protocol BIP draft 4ba4fc3f0a
updated draft 3afd4bd57f
christianrolandso commented at 3:10 pm on September 9, 2017: none

Zzzzzzz
Jatupol99 approved
luke-jr added the label New BIP on Sep 16, 2017
in bip-draft.mediawiki:14 in 3afd4bd57f outdated
9+ Status: Draft 10+ Type: Informational Track 11+ Created: 2017-07-17 12+</pre> 13+ 14+&ast; 999 is a temporary BIP number.
luke-jr commented at 2:52 am on September 16, 2017:

Please don’t self-assign numbers, even temporarily.

in bip-draft.mediawiki:250 in 3afd4bd57f outdated

245+* [[bip-0044.mediawiki|BIP44 - Multi-Account Hierarchy for Deterministic Wallets]]
246+* [[https://arxiv.org/abs/1212.3257|Homomorphic Payment Addresses and the Pay-to-Contract Protocol]]
247+
248+==Copyright==
249+
250+This document is placed in the public domain.

luke-jr commented at 2:53 am on September 16, 2017:

See BIP 2 for a list of acceptable licenses.

luke-jr changes_requested
luke-jr commented at 2:53 am on September 16, 2017: member

A section is needed addressing backward compatibility.
updated license 39a5c1bf7e
removed temp BIP number dd26d81390
added Compatibility 10104eb211
omarshibli commented at 6:41 pm on September 16, 2017: contributor

hey @luke-jr, we addressed your points, please review.
luke-jr commented at 8:16 pm on September 16, 2017: member
By compatibility, I meant more of (whatever the particular case may be; these are examples):
- “contracts can be verified separately from the sender’s wallet software, and then a normal address is used”
- “This is incompatible with multisig P2SH wallets”
- “The wallet is assumed to use BIP 43 derivation”
Note that BIP 43 (and even BIP 32 / HD wallets in general) is not universal, and your proposal’s connection to them seems unnecessary and pointless. What is the benefit of even doing anything HD-based, since the end key requires non-deterministic metadata (contracts) to find?

Anyhow, let’s use BIP 175 for this.
luke-jr renamed this:
~~[New BIP] Pay to Contract Protocol~~
BIP 175: Pay to Contract Protocol
on Sep 16, 2017
update Compatibility 3ff47ff642
omarshibli commented at 8:19 pm on September 16, 2017: contributor

Got it, we will work on clearing this out.
updated BIP number and examples 689fcdb878
updated alias 522a0e88f3
updated compatibility section dd18e39624
omarshibli commented at 8:26 pm on September 18, 2017: contributor

Thanks for your feedback @luke-jr , you are raising a valid point regarding the backward compatibility with BIP32 and other related BIPs, we have updated the BIP accordingly. Regarding your question, I think we need to work better on the motivation section here, but I still see benefit here in using BIP32 derivation mechanism or something similar to derive non-enumerable set as well. I think the main benefit is that ,as you mentioned, BIP32 is not universal in a sense that it only covers use cases where the derivation paths set is an enumerable, yet in our use case we need to derive wallets from a single seed and non-enumerable set.

Much appreciated.
luke-jr commented at 10:27 pm on September 18, 2017: member

When you’re ready, don’t forget to rename the file and add to README
updated README.md, renamed file 2df903a4a1
fixed number cacc29a91c
omit Track 5d673da3cb

in bip-0175.mediawiki:10 in cacc29a91c outdated

 5+  Author: Omar Shibli <omar@commerceblock.com>
 6+          Nicholas Gregory <nicholas@commerceblock.com>
 7+  Comments-Summary: No comments yet.
 8+  Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0175
 9+  Status: Draft
10+  Type: Informational Track

luke-jr commented at 10:54 pm on September 18, 2017:

drop “Track”

omarshibli commented at 10:55 pm on September 18, 2017:

done

luke-jr merged this on Sep 18, 2017
luke-jr closed this on Sep 18, 2017

Contributors
omarshibli christianrolandso Jatupol99 luke-jr

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