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 0x998b442cd68941008961eedfb8130aa1e0219b53c125c66c0bbb8a2fa4638e49. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e19aa382-3c15-4aa1-9f7d-e910bca98ceb.json and https://artists.proofprofile.net/proofs/artist/e19aa382-3c15-4aa1-9f7d-e910bca98ceb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb5eb15156fc3f1917c25dcc6b885ec6bfc843b57240567b7d0f5487f0d59d46e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRG722200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01fe5cb81148a8e9bf5490f5839c862b4d53207e854a9929111f595aa7f114f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRG722200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8e7dcceba7cc978798d58c21598fbffeda9d0086ef319454a6c3da78ce599. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRG722200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9912467dd65f44c15c1a4410018a1c0718a9187973cf03e87ff95d2aa0a3611a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BRG722200089.
Acordes De Minh´Alma (Acordeon 4 Partes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f14a0bf3a702a8971abe6e855b535344e87f857147d00e717271cb7ceb2bd2. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:51:58Z), 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/BRG722200115.
Ó Meninos, Estamos Reunidos (Hino 431 - CCB)
Os Hinos Mais Lindos Da CCB (Tocados No Acordeon)