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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b7789dc315b12facabc83418ecc988102af11f7b992dc542943a6112c00c2. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8958e35f-3d49-4087-9b3f-02fd8f7b06c7.json and https://artists.proofprofile.net/proofs/artist/8958e35f-3d49-4087-9b3f-02fd8f7b06c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amarall à Vontade: A Carta / Quero Ter Você / Vinhos e Lingeries / Não Consigo Sem Você / Que Saudade
Amarall à Vontade II: Encontros e Despedidas / Na Rua na Chuva na Fazenda / Palavras ao Vento / um Dia de Domingo