This issue will be updated to reflect the current state of BIP352 integration.

PRs ready for review:

• Add "silentpayments" module implementing BIP352 (take 4, limited to full-node scanning) bitcoin-core/secp256k1#1765

Overall plan:

• Pre-work / Refactors

  • Break up script/standard.{h/cpp} #28244
  • wallet: Use CTxDestination in CRecipient instead of just scriptPubKey #28246
  • wallet: Pass through transaction locktime and preset input sequences and scripts to CreateTransaction #25273
  • wallet, rpc: FundTransaction refactor #28560
  • refactor: Model the bech32 charlimit as an Enum #30047
  • crypto: add NUMS_H const #30048
  • refactor, wallet: get serialized size of CRecipients directly #30050
  • crypto, refactor: add new KeyPair class #30051

• Send and receive support in the Bitcoin Core wallet:

  • libsecp module (cryptographic portion of the protocol: Add "silentpayments" module implementing BIP352 (take 4, limited to full-node scanning) bitcoin-core/secp256k1#1765
  • Base protocol: Silent Payments: Implement bip352 (take 2) #35301
  • Sending: Silent Payments: Sending (take 2) #35302
  • Receiving: Silent Payments: Receiving #32966

• Light client support:

  • Index for silent payment tweaks (depends on 28122): Silent payment index (for light wallets and consistency check) #28241
  • New BIP157 filter type for tweak data (not started)
  • Serve new filter type (not started)