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 0xb92137f513c030c1b4bd43e5526bc03e8c4c78ed7b4f4d12f615c16b23607e75. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9120b718-1247-484e-b906-249fe4d1dd8d.json and https://artists.proofprofile.net/proofs/artist/9120b718-1247-484e-b906-249fe4d1dd8d.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 0xe34fcc2cc01e8576a446660731f32d8ea312f5ead1f48df5004ced8eb913da9d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRQEJ2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580dcb4a6f19d36e0fde5942d75aa6b529566f0c63694fd78983ce573c5d927. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRQEJ2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60aa492979926f18b1195877e563d62ea4483f26f57cfd27ca5f22b961eb42b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRQEJ2100025.
Hora de Aprender: Jesus É o Cordeiro de Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e595524f2cbde384de6634c1e5c69645184df38656b6c32efab09f6d3b5a910. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRQEJ2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a2543f155182b8982e843edbe5f8a162de15114cdfdc2ab0bd3c082e978856. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BRQEJ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0d932c71e11f3c6766808d21dab57ffd60036d8f831540c449f51994cf8fd. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BRQEJ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab53bc01a46416033d480c3a4ac432870e9632369d4443b111b1f87443bf84c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRQEJ2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a0c570875a6d15343911e508a6314aa6e8e73003bba39fe6906240687bb70a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRQEJ2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ac6514255bb56943cd8858c38185abae4c72181fed6680c50fed3ea3723d66. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRQEJ2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5738eee71e4c9afbfa4969f17589d2554ab450fa379cff5358a58288baf6d83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRQEJ2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a58c0fdd1fee7d7bb70f27d92157200fe0d95fc2f1aa8d1aaea2f5ee51b4f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:52Z), 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/BRQEJ2500015.