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 0x7d96cfe6c8fc2b6b06f62a76513732b363f4dfec3d9cc994ad8e1cae1332ac6e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d6eed8d-dcaa-4946-8c6e-98599033fc97.json and https://artists.proofprofile.net/proofs/artist/9d6eed8d-dcaa-4946-8c6e-98599033fc97.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 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 0x6ce2c0a7892afe9f98dc9a215650557433306e5643509f5ad122001956871b48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BX9312200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03deb0701f347839175bd038955c3ddac9b877610532ab2e8b58369a508b507. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX9312200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edbc5c8216acf0a2b49127449016ccc7cbeb5fd9650a513af756843d3b80c5d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX9312200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21f676313d3f563093720558493a369637aff6e52660f833bc00162861c5435. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:56:18Z), 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/BX9312200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8875546dc716c511aab47492e4b0b68bfc397989045b84244217c018d252b921. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX9312000004.
Luccas e Gi em: O Mundo de Magia e Fantasia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6a47d32acc117c755984c71f3c9d955455752cf2c91d342eccbf129a72dd9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX9312300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa414f79f263f6c74daaccec7cef0bc53c6177695448093302aea1fd208e2c451. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX9312100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6509a73ed7fa025aba343682b13e2dddc53a19cbd084860ca9b4e0b4c368f074. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX9312100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae8b8d520fcc6d7d1095dbfab9b1aa51bbbc91e79241e04a96ab6c524c66fca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX9312100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f34a833bcfb4d29788227415e6a51bb20ea7e719f79033d7c2087f647ad34e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX9312300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090be2b98209a63f8c89e2682474cff33bfdbfb4b9a27d48bde588ffc150f5c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX9312300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba1de7a1d50ce31717454f6fd49b33c948fb3666b20b92d098a619d5b6415a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX9312300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8875546dc716c511aab47492e4b0b68bfc397989045b84244217c018d252b921. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX9312000004.