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 0x5a200a975903ada85ad7c74070ca853dfcc2b1ec7c3133849bfa71512614099f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09b30d02-92aa-498f-8282-dfef72fcd6d7.json and https://artists.proofprofile.net/proofs/artist/09b30d02-92aa-498f-8282-dfef72fcd6d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toca do Vale & Balanço do Forró (Ao Vivo)
No Grêmio Recreativo Ipuense - 2001 (Ao Vivo)
Toca do Vale e Balanço do Forró, Vol. 4 (Ao Vivo)
Toca do Vale & Balanço do Forró - Cascavel - CE - 2007
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2d35c994d4b0907cd224221ee30f84545a0042a4878d2f58fc0bb4fe2db5da. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRPAR2400118.
O Quentchê do Forró (Se a Sua Estrela Não Brilha, Não Tente Apagar a Minha)