Andorinha is a municipality in the Brazilian state of Bahia. Its estimated population in 2020 was 14,503.IBGE 2020 See also List of municipalities in Bahia References Category:Municipalities in Ba
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03697554ca86f13a76b31c4857d9cb145325e7d4807eaf8cd22f6e7d207bbcc9. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19360f8c-c9b8-4f80-9f99-c28e33cd9054.json and https://artists.proofprofile.net/proofs/artist/19360f8c-c9b8-4f80-9f99-c28e33cd9054.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Os Grandes Repentistas do Nordeste: Cantoria de Viola, Vol. 08