Bip47 & Reusable Payment Codes version 3 & 4

[yoshimo]

Since we are getting closer to TOR Support, it would be great to get additional support for privacy enhancing features. Colloquial, PayNyms. These are specified in Bip47 as implemented by Samourai and enhanced in https://github.com/OpenBitcoinPrivacyProject/rfc/blob/master/obpp-05.mediawiki Having more wallets support this venmo style method for sending money to your friends, would benefit the ecosystem in general.

[yoshimo]

150k Sats for an implementation

[yoshimo]

@Overtorment could you add the bounty-label?

[ghost]

Count me in for another 850k sats

[acantril]

Count me in for 1 million sats

[dav1dpgit]

In for 100k sats

[ghost]

This could be huge. In for 100k sats.

[coinsurenz]

1 million sats to this worthy cause

[modl21]

count me in for a million sats

[RequestPrivacy]

Not a fan of iOS but it will help Bitcoin so 25,000 sats from me.

---

Total bounty: 4.250.000 sats

[ghost]

Another 250k from @Jorj_X_McKie on Twitter

https://twitter.com/Jorj_X_McKie/status/1494366711709159430?s=20&t=vKlwZaVyPHEg5kiKgPg4Xg

---

Total bounty: 4,500,000 SATs

[ghost]

Member of Citadel Dispatch matrix group pledged another 1 million sats

---

Total bounty: 5,500,000 SATs

[Ziya-Sadr]

count me in for 100k sats

[apemithrandir]

500k Sats

[btcuserguide]

i'm in for 1,000,000

[BTclaudia]

I'm down for 500k SATs

[ion497]

Count me in for 200k sats

[ghost]

Another 300k from @Does_not_mattr on Twitter

https://twitter.com/Does_not_mattr/status/1495321573208858625

---

Total bounty: 8,100,000 SATs

[jamesgmorgan]

I pledge 125K sats donated over paynym upon completion.

[ghost]

Another 100k from Meister Eder on Twitter

https://twitter.com/Meister_Ancap/status/1495473258258382850

---

Total bounty: 8,525,000 SATs

[diegoperezcham]

Count me in for 475K sats

[TheGuySwann]

Put me down for 1,000,000 sats to make it an even 10 👍🏻

[alaznem]

count me in for 40k sat

[FreddyPPFinklemeyerIII]

I’m in for 1,000,000 million sats

[ghost]

Another 500k from Isaiah Douglass, MBA, CFP on Twitter

https://twitter.com/IDFinancial/status/1495503166133215232

---

Total bounty: 11,500,040 SATs

[ghost]

Another 300k from AmBird on Twitter

https://twitter.com/TurboSloth1869/status/1495554918656233472

---

Total bounty: 11,800,040 SATs

[ghost]

Another 100k from Honk Honk MetaMick on Twitter

https://twitter.com/metamick14/status/1495850492978733062

---

Total bounty: 11,900,040 SATs

[pointbiz]

"bc1qq5y96828txk8lruha27l8gpkhtfc55u3f87s5q" "JxylYiEmkCdFTxHd+u2MBfvZpH66oUhw8v+Dm5y7PMh4bGDOTYQZnxywHTYjGY/MjVJKLpzUVq0NAYxwtcojRCs=" "I, pointbiz aka BTCCuracao, pledge 19,500,000 sat bounty for Bluewallet github issue 2883. BIP47 v3 v4 reusable payment codes. The bounty to be paid after the first successful release of this feature as I deem it."

[karozagorus]

There are very serious privacy concerns and traceability related to identifiers mentioned by this highly respected developer here: https://twitter.com/EricSirion/status/1494436823036272640

[ncoelho]

https://twitter.com/EricSirion/status/1494436823036272640

That's not how it works. Eric even says he realizes that later on the thread...

[karozagorus]

https://twitter.com/EricSirion/status/1494436823036272640

That's not how it works. Eric even says he realizes that later on the thread...

He never stated that apparently.

[ncoelho]

Not sure why you are trying to fud bip47. Which is 7 year old bip with a lot of review.

Eric says he doesn't understand it. Which is natural if you didn't look deep enough.

https://twitter.com/ericsirion/status/1494633806069960707?s=21

[karozagorus]

Not sure why you are trying to fud bip47. Which is 7 year old bip with a lot of review.

Eric says he doesn't understand it. Which is natural if you didn't look deep enough.

https://twitter.com/ericsirion/status/1494633806069960707?s=21

I'm just worried that Bluewallet's privacy might get compromised if this is allowed into it, especially since people are giving you monetary incentives now to add features.

[acantril]

That whole thread is embarrassing - imagine someone saying 'why bother with bitcoin or lightning, or i don't see the point in BTC/LN'

[karozagorus]

That whole thread is embarrassing - imagine someone saying 'why bother with bitcoin or lightning, or i don't see the point in BTC/LN'

Agreed, its a cringe anti-LN stance they are doing.

[acantril]

I'm just worried that Bluewallet's privacy might get compromised if this is allowed into it, especially since people are giving you monetary incentives now to add features.

Privacy compromised by a privacy feature? and privacy of a product which has no privacy as it uses the BTC, by default 0 privacy.

[acantril]

Actually no, embarrassing isn't strong enough .. but i don't want to use the word i'm really thinking of.

[ncoelho]

Not sure why you are trying to fud bip47. Which is 7 year old bip with a lot of review.

Eric says he doesn't understand it. Which is natural if you didn't look deep enough.

https://twitter.com/ericsirion/status/1494633806069960707?s=21

I'm just worried that Bluewallet's privacy might get compromised if this is allowed into it, especially since people are giving you monetary incentives now to add features.

Bip47 is onchain, doesn't use 3rd parties or servers. So it is not possible to compromise bluewallet's privacy.

Users are putting a bounty, other users forked and are trying to get the bounty. There's zero monetary incentives to bluewallet.

[karozagorus]

Not sure why you are trying to fud bip47. Which is 7 year old bip with a lot of review.

Eric says he doesn't understand it. Which is natural if you didn't look deep enough.

https://twitter.com/ericsirion/status/1494633806069960707?s=21

I'm just worried that Bluewallet's privacy might get compromised if this is allowed into it, especially since people are giving you monetary incentives now to add features.

Bip47 is onchain, doesn't use 3rd parties or servers. So it is not possible to compromise bluewallet's privacy.

Users are putting a bounty, other users forked and are trying to get the bounty. There's zero monetary incentives to bluewallet.

But doesn't the channel establishment require you to pay a fee for scamourai wallet?

[ncoelho]

But doesn't the channel establishment require you to pay a fee for scamourai wallet?

No. As I said this is bitcoin onchain, there's no samourai or servers involved.

Nothing like learning something before commenting about it.

[karozagorus]

But doesn't the channel establishment require you to pay a fee for scamourai wallet?

No. As I said this is bitcoin onchain, there's no samourai or servers involved.

Nothing like learning something before commenting about it.

Well, since nobody verified this to be not leaking something I still don't trust it.

[ncoelho]

Well, since nobody verified this to be not leaking something I still don't trust it.

What do you mean? It literally is a bip (47) on bitcoin repository reviewed by some of the best cryptographers in the world.

You may not like samourai wallet implementation. But this has literally nothing to do with it.

[karozagorus]

Well, since nobody verified this to be not leaking something I still don't trust it.

What do you mean? It literally is a bip (47) on bitcoin repository reviewed by some of the best cryptographers in the world.

You may not like samourai wallet implementation. But this has literally nothing to do with it.

Well, it is very difficult to believe it because scamourai wallet's only goal is to co-opt bitcoin privacy and deanonimize users.

[ncoelho]

Well, it is very difficult to believe it because scamourai wallet's only goal is to co-opt bitcoin privacy and deanonimize users.

I don't understand why do you think this has anything to do with samourai wallet? This was not invented or purpose by them.

It is like saying you don't trust bip32, or bip84, which both samourai and also wasabi use... It is just a bip.

[RequestPrivacy]

This isn't Twitter. Stop spamming this issue with misleading suggestions. If you don't understand what a BIP is go and do some reading before making false claims.

[pointbiz]

In simple English, a Bitcoin address is something you give another person to request a payment from them. The act of giving the address to someone identifies the address belongs to you. That same address is used in the blockchain and anyone can see for free that YOU are receiving transactions.

Reusable payment codes is a new type of address (P address). When you give someone your P address you are identified with it. But this P address never is put in the blockchain. The P address is used to make a.new address that only the sender and receiver know who it belongs to. That new address is used in the blockchain.

This is an extra layer of privacy, it's not perfect privacy. It doesn't stop someone sending you Bitcoin hoping you mix that Bitcoin with other Bitcoin in your wallet during a spend. That happens already without BIP47. And it costs money to try to violate someone's privacy with that technique.

P address allows you to make contacts in your wallet for conveniently sending transactions to the same contact but using fresh addresses every time. Making it easier to avoid address reuse means blockchain analysis firms learn less about your transaction history and patterns.

[SuperPhatArrow]

FWIW I am very keen to add this feature and I had begun working on it when the previous developers said they were going to do it. There are a few things though...

This issue is for BIP47 version 3 & 4 but this BIP is actually not a BIP as far as I can tell. BIP-0047 covers versions 1 & 2 OBPP-05 covers versions 3 & 4

In order to be completely compatible with other wallets, like Samourai Wallet and Sparrow Wallet, which both use version 1, Blue wallet should also use version 1 (for now). The only wallet I have heard of that has implemented v3/4 is a wallet called Métier, which is a work-in-progress afaik. It's from Justus Ranvier (the author of OBPP-05).

@yoshimo is there any particular reason for requesting version 3 & 4 when it is not clear that other wallets will be able to send to Blue Wallet if these versions are implemented? Am I correct in assuming that you just wanted the privacy of Payment Codes and BIP-0047 and a version that is compatible with the BIP (and other wallets) rather than the Latest from OBPP?

Then, the next question is for those that pledged: @yoshimo 150,000 @librepgp 850,000 @acantril 1,000,000 @dav1dpgit 100,000 [Deleted User] [100,000] @johnnywonder1 25,000 @coinsurenz 1,000,000 @modl21 1,000,000 @RequestPrivacy 25,000 @Jorj_X_McKie on Twitter via @librepgp 250,000 Citadel Dispatch matrix group user via @librepgp 1,000,000 @Ziya-Sadr 100,000 @apemithrandir 500,000 @btcuserguide 1,000,000 @BTclaudia 500,000 @ion497 200,000 @Does_not_mattr on Twitter via @librepgp 300,000 @0xAsteria 200,000 @jamesgmorgan 125,000 Meister Eder on Twitter via @librepgp 100,000 @diegoperezcham 475,000 @TheGuySwann 1,000,000 @alaznem 40,000 @FreddyPPFinklemeyerIII 1,000,000 Isaiah Douglass, MBA, CFP on Twitter via @librepgp 500,000 AmBird on Twitter via @librepgp 300,000 Honk Honk MetaMick on Twitter via @librepgp 100,000 @pointbiz 19,500,000

TOTAL: 0.3084BTC

Do your pledges still stand if this is for V1 (compatible) or do you require V3&4 (Probably incompatible) to consider your requirements met?

As for karozagorus, just ignore them. It is their day job to spread FUD about Samourai. Click the links in their profile to see.

[BitcoinQnA]

Put me down for 250k sats

[SuperPhatArrow]

For reference https://twitter.com/SamouraiDev/status/1499796801733419009

[btcuserguide]

Greater compatibility is preferable at this stage so confirming my pledge stands for v1

[yoshimo]

Version 1 is just the beginning and has limitations , both technical and in the number of wallets that support it. Implementing that one would benefit a lot of people but i put the successor on the list in the hope that either we get all of them checked immediately and are one step ahead this time or we at least make the developers aware of the improved draft so that the implementation is prepared and can be enhanced easily later on.

V1 will receive my sats regardless. Extra sats are on the table if obpp-05 and/or reusable taproot adresses get implemented.