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 0x1f678e50eca23676276f7b95f7af028f58c4646ac1acc356ba8bd8f7ef89a051. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c2312e-336a-429a-aaf5-bae22a5a1bb1.json and https://artists.proofprofile.net/proofs/artist/00c2312e-336a-429a-aaf5-bae22a5a1bb1.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 0xc456e4da393f57526c44731698ca88f74dd5876a51460ff91f59e599075f9ae9. 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/USA3D2439301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a01c5da2f705734bdd93a7765e85372804158d070ea3969d778943313456a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA3D2439302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e5160fe3b571ee7786cc25270e4105561c9f1110316355dfbc8f830f662945. 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/USA3D2439303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc912eb096ed2bb4ae6134c758744993e34e0c6a4eb82a803c823759bb7abb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA3D2439304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180eb54f259c1ad73d01822234d167e83ed8e301908365df30847e05182be89. 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/USA3D2439305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b64d454074107650dbf4b8fd63c61cc500ce00445a401b9e3aff0e95d28caab. 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/USA3D2439306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83637ee8c8f30d6cfc81f30cabe2e867fc73af2ab0acd526f6fc58022c6da4b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA3D2439307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa415f65906584d52711581824871e08adf10cd629502a7924e5772a5a2da2c3e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA3D2439308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd640325ff4d21474e37d66ac8309704bc0b99ad7db3febbd78df490f9f764d5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA3D2439309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4577b1b760c0ff11f835c30816da7de141ff819aea44ba80011cf4417fb153f. 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/GBMA21944373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c82de6db92970884f38cf5f599388c88243350809e2e29496ecf6a6093dc28. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA21994340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95637f6dd9db2112eef0805b06a8231455f52de82b600cab25838d07dacf4da0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21944374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c278351b2fc57baa87e8d3ee2c8f7c0c2f5fdad7d5affd58379522cea766270. 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/GBMA21944377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c990dc38e6489e83e63c3b9104dd31f5f271326641df08936a82e6314bb3ae0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMA21944380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110b4b93130d7241770eddd6f5e29c12ee5ce2b8a8a204e58c8e9d2e7cd8a7a9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBMA21944383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc456e4da393f57526c44731698ca88f74dd5876a51460ff91f59e599075f9ae9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA3D2439301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180eb54f259c1ad73d01822234d167e83ed8e301908365df30847e05182be89. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA3D2439305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a01c5da2f705734bdd93a7765e85372804158d070ea3969d778943313456a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA3D2439302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c278351b2fc57baa87e8d3ee2c8f7c0c2f5fdad7d5affd58379522cea766270. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21944377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4577b1b760c0ff11f835c30816da7de141ff819aea44ba80011cf4417fb153f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21944373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea11ac17902770bfc949f0810fc417e431af10495e27e71a5323fe88d6caf44a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES51829976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f450b43b48462f6c0f6dacc48fe65ac400a5017920b651647be1c178962e93a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZCE61884648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfc47fd55c70e2db3581fc97423782d82f9d2239fbc8f20a725f5da507f6a38. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZCE61884649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203dbe5711a2e9647a78bd4b4a88724c2492790a63532b70c4fbb18c1d354dc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZCE61884650.