Support BTC signet

[ShookLyngs]

Background

The BTC testnet3 is currently slow and the peak fee rate is sky high.
Therefore, we may have to support switching to other testnets in the rgbpp-sdk/btc.

Questions

Some questions to be answered, some decisions to be made:

1. Which network should we support: testnet4 or signet?
   1. What's the difference between these two networks?
   2. Will testnet4 become the default testnet in the future?
2. Should the new testnet replace the NetworkType.TESTNET, or should we add a new NetworkType option?
   1. If adding an option, how should we handle them when testnet4 becomes the default testnet?

Discussion -> Conclusions

1. BTC testnet4 is not finalized yet, so BTC signet will be supported first. BTC testnet4 may be supported later.

2. The BTC testnet3 should continue to be maintained as most of the RGB++ testnet dApps are running on this environment. A new BTC NetworkType may be required to accommodate this need.

TODO

Bitcoin/RGB++ Assets API @ahonn @mfuuzy

• deploy a BTC signet node + btc-rpc-proxy + electrs
  • test mempool signet API
• assets-api for BTC signet + CKB testnet
  https://api.signet.rgbpp.io/docs

BTC signet SPV on CKB testnet @EthanYuan

• deploy a new instance of BTC signet SPV on CKB testnet
  https://pudge.explorer.nervos.org/script/0xc8a30fe3e8101cb4163e70b4eb1e42d477ae7094524a30bfdf1c90be41876d28/type
• btc-spv-service updater and watcher
• feat: adaptation to btc signet ckb-bitcoin-spv#19

CKB testnet rgbpp contracts with BTC signet SPV config @EthanYuan @jjyr

• rgbpp-lock deployment: https://pudge.explorer.nervos.org/transaction/0x61efdeddbaa0bb4132c0eb174b3e8002ff5ec430f61ba46f30768d683c516eec
• btc-time-lock deployment: https://pudge.explorer.nervos.org/transaction/0x5364b3535965e9eac9a35dd7af8e9e45a61d30a16e115923c032f80b28783e21

rgbpp-sdk/btc @ShookLyngs

Without modification:

• Test basic transfer with P2WPKH/P2TR accounts

If adding NetworkType.SIGNET:

• Update the decodeAddress function and remove the networkType from the return type, as it's no longer accurate
• Check and update where the decodeAddress function was referenced

Note

need discussion because signet and testnet are almost exactly the same at the application level
ref: bitcoinjs/bitcoinjs-lib#1820 (comment)

rgbpp-sdk/ckb @duanyytop

• Add Signet RGB++ lock script and BTC time lock script
• Support all RGB++ operations for BTC Signet network
• Update all RGB++ examples to support BTC Signet network
• Tests: adjust tests to use the new network @duanyytop @Dawn-githup

References

• https://pudge.explorer.nervos.org/ will Mark RGB++ Info for Signet Magickbase/ckb-explorer-public-issues#700

[Dawn-githup]

You can currently claim sBTC test coins through 2 faucets

Faucet 1: https://signetfaucet.com/ (0.00001 at a time)

Faucet 2: https://botanix.5thweb.io/ (0.001 at a time, 1 time in 24 hours)

[duanyytop]

If we switch to BTC testnet4, do we redeploy RGB++ lock script and BTC time lock script for testnet4?
If yes, we still need to update rgbpp-sdk/ckb.

[Flouse]

Since BTC testnet3 is coming back somehow. So the priority of supporting BTC signet or testnet4 is now lower.

If we switch to BTC testnet4, do we redeploy RGB++ lock script and BTC time lock script for testnet4?
If yes, we still need to update rgbpp-sdk/ckb.

However, if testnet3 remains unstable or problematic, then rgbpp-sdk and assets-api have to investigate to support a new test environment.

So the answer to your question is Yes, in a long term.