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 0x8e9e819bac68ca6a7d0debc773715c13b9b14b711548724dce446ecf5da7ce2b. 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/326f405c-b62a-4630-bc99-7785ff6bdb47.json and https://artists.proofprofile.net/proofs/artist/326f405c-b62a-4630-bc99-7785ff6bdb47.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 0xcd1d9a7aeff1826e3c476d8181d138925024e2ebcd9bafb3acea435740a5ad2b. 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/QZDA52205105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc25d1fa1a2ed4dba5056d48f687dde14f0b2db016da4a3808a99561c7aebf6a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6K2223115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738d8380361e01aa53b0db10473ab46bd3addafad444846b92b58113842e006d. 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/QZMEN2247109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49da369a182e1acb6551ea793141dfab0ac5e604f236755d68b399982f4f32e5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWQ2242672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf462f372e3ac592f795af8396d42996f37d11cb6d1fa781015cd25a61ec55ae8. 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/QZNWW2240161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabc4b3563facbd34d196b05164a2e3edd7194e955c12c1552e3729351acd56c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHNA2363659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ebe5dcddea54cf280cfcffe31ee2549443040fa5049a5f0a58af9247dc8fd6. 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/QZNWY2348387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8816183a47a124867fa5d2ebf4719da06aa3bc085fbd3047a7ba3417518b7d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA52407214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2c6633fd98c9cd7ab83c2b146fa7286d57e27761fe81954bee76ec844de0fa. 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/QZES82414351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe357ddf75906249b4901df3a7b9016371b7bf77604d8cbe57a545927e90e33d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZES82409865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc464b1f62d6f96466300a362b7a76755b083f3ecbd6730db2f480fce422bf05. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWV2464255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e01b8b63dd634373cb0b993fcaeb6d20e0172353656b4ab43cdc008dc77c8a9. 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/QZTB62444092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2956afe5a41a63a5d237027fc70c752ac03113dfc3e1d652a6f48a1c23758. 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/QZWFG2438579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235e40ea1f6531013fad0635c98ff0489981a5a153b3ff925fc6e41b4d50c70b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:31Z), 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/QZWFG2441732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc0585c47722200946f2dbd4a174ff4d3ada527f0abcf227f7b833bc062ab98. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:15:45Z), 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/QZWFG2441750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26cc70939bacc3ce396d1d06cb8593f575fde16d40aacb213694966cb8dd73. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZWFG2469965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44f7156bda6cb2908530af8f271bd17427895c6980e3998d78bc29683286a65. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ762410523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f2affea5fa5f8e7c7178280c3b76724f92892aa2da2514d60854b6a4a14ee. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:56:32Z), 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/QZZ762412364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0babe5499d26c8c3ae378ec770639b4271ab9bdf68c0e3b08889bd0b9f0aa897. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZZ782405648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3263b2a83005b1d02ab04712e171b3923bb9384d160618c1ed643a1a8b415f7. 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/QZK6N2574958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32b1f60f27d8dd932fe3887a95f60e9a5c441433629e37c363135d16971e2fe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:37Z), 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/QZK6N2576475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e05def63414a58ba724d48dc76116c02861956fa7eb3df22a91ba4c9e55cb85. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZK6N2578845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c725b4ef9c6bce18b8d33f072523c604f07dfd551ce405386649869b93c9f1. 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/QZZ7N2559046.