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 0x4555289aca007f070b8341502b9e217854979a9bc9cb90e03f79ce32f9048efc. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03b06c9d-4a67-444d-8bb7-25630cbfca10.json and https://artists.proofprofile.net/proofs/artist/03b06c9d-4a67-444d-8bb7-25630cbfca10.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 0x227b9aad35e70b00e9bad237665097b2981e0d267cc3b9a6239d6b09bed6ff10. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFM2593927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b9aad35e70b00e9bad237665097b2981e0d267cc3b9a6239d6b09bed6ff10. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFM2593927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d0725e19a86580e1bee0ea22945bb2ca930094084ff9bf087c1c380bb7a53. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7M2522027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8934ea77369a4c685248ea9a1c62468071e0ae78bb2f66684a0cba7f206567. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7M2522028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f01901a3eee06a3be632bd58d50de028daee889bfcb1bf992fca2cb6fb3588. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:47Z), 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/QZZ7M2522029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080548d7bff74696226b278bf9128cd0a19401e883117ce0d5947718c08ce7b2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7M2522030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c2d25bffdfd9750374107edd8c948fddda9f9c3cd8acbe64f2dc7135560be2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7M2522031.
Salvação do meu rosto (Resposta da Sónia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3316ccdd7b7e51cec8fe1cf72942a9e6e20974131dfadc7579315d4a9178d355. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:16Z), 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/QZZ7M2522033.