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 0xf006616f4699c2dd769e1c101200d26bb60b6f52d990a2e8bf20c38e1ba8db9d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2b9ad91-bca4-4893-a8e6-7f200a348ea9.json and https://artists.proofprofile.net/proofs/artist/e2b9ad91-bca4-4893-a8e6-7f200a348ea9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forrozão João e Mariazinha - Forrozão da Barraria (Remix)
Forrozão João e Mariazinha - Forrozão da Barraria - Remix
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 0x361e16e40e2a867d018be25dabdcea6cfce0aabb72cc51977d10750fe74972b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJZ2406495.
Forrozão da Barraria - Solinho dos Forrozeiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1989770bd3ceabd903b40fcd743ce4d259cbdba837a32a99ce76ba054f5f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJZ2418947.
Deziubeste-Ma - Forrozão Da Barraria (Remix)
Deziubeste-Ma - Forrozão Da Barraria - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fd43673c0e6283f5b39cf3ea3e19393e9a01e454c566b82291daf76024b7fa. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNJZ2441387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9cf126eacde357ac845b0bb4b8545ff218326f36039778692c675cb113b6e0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:56Z), 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/QZNJZ2436231.
Forrozão Mariazinha Forrozão da Barraria