The second chain source. Esplora is address-level, so finding a wallet's coins means
walking the gap limit ourselves — 43-160 requests per refresh. NBXplorer is scheme-level:
register the account xpub once and every question after that is a single call. So this is
deliberately NOT an implementation of EsploraChain's interface; there is no per-address
query worth emulating, and emulating one would throw the advantage away.
Verified end to end against the owner's live 2.6.9 instance: status, track, balance,
utxos, transactions, unused address and fee estimates all round-trip, and NBXplorer
derives bc1qwnvlm8... for BIP84 0/0 — byte-identical to what keys.ts derives.
Three things the upstream docs get wrong or leave out, all confirmed by hand:
- single-sig taproot is `-[taproot]`, absent from NBXplorer's own scheme table
- querying an UNTRACKED scheme returns 200 with every figure zeroed, which reads as a
real empty wallet; track() is therefore on every read path, not just at setup
- a rejected broadcast returns 200 with success:false, never an HTTP error
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pastilhasandClaude Opus 5
2d71424d5a