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 0xe3999445a33f97a752f33e2f7cd391a5d21e34f0e30a26beaac557d7c17c0a64. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ff945bf-aa2d-493e-9c9e-3485a6884dcd.json and https://artists.proofprofile.net/proofs/artist/8ff945bf-aa2d-493e-9c9e-3485a6884dcd.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 0x4c28c48c4611b02bbe606777c6cdd374bfd18d09691c154f15e00cd788499d4e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/RUA1H2092748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b436e84616bdcf0abd539c0590a0d3483c844d4d8e9610e75b92adbbac055b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1H2092751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa336cf70b711e1ff5f8a6eb06d6a5e8a7eaf495a4e1ac6dc06908bee20aa0a9c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUA1H2092752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c889425211e5111a5d58994f02ece41abae4f91e368ea96219669a24ed6bc9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AEA0D1855989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b6f69fbc916da43d566fb9663d7469de3d82f7b5c0dd156a9e537f9927e39. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AEA0D1855992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b349ac2b300e53f9ea4cf475cffd554d3270b4b80789b8a215e13e9b8afc26. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA0D1855993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8f64d8dd9fc15dcdd950f1a3ea47ee3745841e38a6761ac52125869fd9a44. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:42Z), 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/AEA0D1855999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b786429c0a876ad965c2acd05a8afaa3dbe56ec6b0e0509dedf5cde20ca5ed. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/AEA0D1867293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ba7cae766afa81c235c943d65b69d346bd920ac32af15dee8504d3974634d. 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/AEA0D1867294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbbbcfd5baa4c6d7a544084fa01080cf60330bd36ad6ee4058113e6498d785c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:26:06Z), 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/AEA0D1867295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7bdfbc72f9ecfdb938735865d55950dccaa59bd134d7c1ba296382677fa9a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AEA0D1867296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71734b6e9d1b94ee59bb92418960aba8c15737d3d8df51a9c52279c1b98f7bc. 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/AEA0D1867299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b61d9591fa44a48b0ee23c13d713042b7bf80156a5a16c78693034548265611. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AEA0D1867300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc1328f7454c232c662e007f0139713ced5d4965454826c4d0ea06e15136ac1. 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/AEA0D1867302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ef24737618e23637fe5d8f83f8af2da7ba0ce3d1dbab4c9f97e136dfa202e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:32Z), 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/AEA0Q2139124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3e986c7ae35a55f2acfa2bc7df95d7bb4bc90081cd580bd6505b8cfd0e4e0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AEA0Q2139125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0449627a3417e11ab30dc00bb04ca2dee2882dbbde88e4319aa810eea7bb3c0d. 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/AEA0Q2139127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd005af3132ed86877071281bddb004d81c7daca25aff2aacb3fe01aa319f0e35. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AEA2M2291480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179926010ff9aa1cf9c2eb6d10ab2fb69cfa5a3d3761bcedbeb6cd3c9d604953. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:33Z), 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/AEA2M2344215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2dca661fe817619a449de93a90be350bf7971d6dbd93b2cc0893ab16d6fe37. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AEA2W2467617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a22ed85434364779bf38a11861793359f7fd9bfa17d1353d0abe30546feb66. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AEA2W2583794.