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 0xf62d908d87ee707b2f89c1f51fbcc4f27c0955bf6ae539bdcbfb39d1b63316e6. 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/8b955c40-e44e-43f4-b51a-c6d9041c2c01.json and https://artists.proofprofile.net/proofs/artist/8b955c40-e44e-43f4-b51a-c6d9041c2c01.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 0x0b84a5adb65a28a2e1329be0c440952f3775a531a216d4b1fa018dcac3dff346. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACG1515159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9ac85efc610bc86b802acaf509b1827298bf3f5b1f45ecffff4287c5ead49. 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/TCACG1515165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c2eaa2ecbf01a6398a46a464d5ce42c93d6221482523b5e325847702afca49. 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/TCACG1515182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e12f4d5bce7e57a24f5974844bff5862b7484a31d9fb159a9ccf91a0ccd028a. 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/US6YC1901895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee416e9adac1f160b0a3e55bcbf215a53bc344ed6a7391d14f3e79cf5fcd8bf. 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/US6YC1901902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135de4d63dbed81a443ab7e09dd695f64e39861ffbe6c88641186f84af7478c9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:26:24Z), 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/US6YC1901904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81306fe9778e5eed7c98819363e631adc926a5d3ab930df3ed975a3c05f88f74. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:09Z), 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/TCAGB2209810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3ac1f6e268274b0844c0e4e53613c3ef953f3374b00abf51b73d0870b25550. 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/TCAGI2285582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c64e079138877afd73bf9ef5bc581000a638f8d91b4a766991ea16b05c07d75. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAGK2213133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d595576507d2d96591cfa09f5e5ca1efe938bbde7bb440c94e844e5d4140580. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGM2216113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc479266d6dce466d47965ac3e52482996f430443996484ebdc88cb71593d854d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAGM2215969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33087c854087e519527e2c6f2c0c9f8f5493b284e037992501e826c20a86f1ae. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIO2435157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca1325680e2dd5566804bbc69b4c36515d4aa73df14ac1ac3f3e96e209d48ca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIO2435164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0ce6d3edf48ce3a7e3077450fe7a7e725279defec97b42adaca29282d2d79e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIP2435304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c524cdc9843ce5781443cb8a5724ee50e63bb6f330c01e39b22589ad635af00. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIP2435317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcddb7b634097fbafa0e8fce11a9530004a448beb6572d7f2de6dffadd91f071. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAIO2435357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e861f520c522dfde7ae985d9ecd2df7b5c43b7da5ab20f900e3a88c3e962e1. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAIP2435371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c419a763183e880e0bc344d677c267b10a3c7c6b1a312803d36950e9174e2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIZ2453352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55665c78f8cbb19c802810dbe7c06ecfd2d483b21911d3c3849d6e99241c351. 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/TCADO1888152.