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 0xce832fed71cc6a27c6a283a960820cbaae7e809d4041e1d4539e093c8becc25c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8574add0-97aa-44fd-8e15-ce41f564a21b.json and https://artists.proofprofile.net/proofs/artist/8574add0-97aa-44fd-8e15-ce41f564a21b.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 0x65b6d5eddcb6bb7b3577b7c7915b30ce9b7b6988c9203ddb97a9e26cd8f6a1c6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:07:53Z), 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/DEM730240002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d18a3ce850d6450f784a302e3d1583fd44763a1ad5376426a833cf14efb80e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:29Z), 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/DEM730240003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c291b2a243f69978557aa564338e815516d8e6a627e47f70e0e5f378cb1f826. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:48:55Z), 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/DEM730240004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f5e721fb5fb8a622c64d31365768a27efb7c781cc44354f6bb8d1f5c43b10a. 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/DEM730240005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531373613182ef60037344b83f6e44761b83aa2b1bdfe67ef6dae2eb5f993ea0. 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/DEM730240010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30df5c544e7f4fc67c25c78e7ac5ca80205c8e1d980774e73de660914b1c5dd7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEM730240011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15a51f9b2f9548f0bbcb992db6e9756e101e586097f508c055bb7357b52bd7. 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/DEM730340015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3c4d6be06aa8fe2e8ce9183cc9ddeee51efec7432e8b19e4fb1991b19afb54. 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/DEM730340016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d83ad82ac700fc06fc034eb0a1957acc38d6cbb92e65d85c15865b24c77781. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEM730340018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbb2f0a75b3098f92252e174e08025e29a6377a91513d9630769b7b5e4bf5d0. 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/DEM730340021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2dfab753b5f47553f3750df06e2ba9f905b4e3420bf5a6fcfab77b75a15872. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEM730340023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3799df48c5a75d43daf86a6a6af5b632d0319a8ff4dbe3cc76cb40aad5f4c8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEM730840001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88603dcd30bae72eafd7119036effad1701027de25a139095dd8267cc5528c69. 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/DEM730840006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27360e9c3df8774aad40b074473222cbae04e88f5cb5eff58a9763486061b08. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:57Z), 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/DEM730840007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4500d3865c5d7c8f1b46218d07266a8272e54aaba25f7bc21bfb585f144da09. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEM732040004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dbcf004c37c3bb9cc69a65572b03cdb02dd6b6b4725c1328cbe05acaa0f86f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEM732140002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aac00cc736f6960d2677a583a9c91ed2b55098689cfd7e8f29b4ac70bf5543. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEM732140021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba704ba670dfe684cefadc736fe399175ffb1a91dc72394a479d493fb3ab4aca. 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/DEM730340038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6bdd9aec2b4cf730634099381fbb117be757de18fc529541129355c406e20. 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/DEM730340042.