SRI uses incorrect encoding of secp256k1 public keys

[jakubtrnka]

The specification says that public key should be encoded as
concatenation of array [1, 0] (which is version number) and 32 bytes x-only public key.
using base58-check algorithm

Currently it does direct base58 encoding of the 32 bytes public key without checksum.

See:
https://github.com/stratum-mining/sv2-spec/blob/main/04-Protocol-Security.md#47-url-scheme-and-pool-authority-key

[Sjors]

Ah, that's useful to know. I'll switch the correct encoding on the Bitcoin Core side after #722 is merged.