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 0x5a82cde04708bf9dc1e8790f94eefdab3e9343a9039d0d99a3b1489a91e3a18a. 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/f8b94d92-658d-451e-8c63-60c2f18b509b.json and https://artists.proofprofile.net/proofs/artist/f8b94d92-658d-451e-8c63-60c2f18b509b.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 0x42230c88c6ffa522b73d1d47ecbae834c54c462085720eb0d7f6afcb620c1bdd. 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/TCAJE2571580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b33494420e8f7ee2622e661146a1517e80efdf0d868e1c24820e2cb4147b71. 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/TCAJE2571595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bbdfb28122b1a77b0f42512c16e135f7b8485bc34b7d1c4f256d5f9d5d2d16. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIY2480845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cde6735ed572ec295837e7c77eb53adce20d0c3f2e4ee0773e54a7879b6a45. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAIY2481108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275de7e74c482ec8d3b8f1b2da49aea905634acec896a888a2aa0d2ff1ccbd9. 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/TCAIY2481115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35679d07dc8fcb54f706a767bea69458c258ecb07109c8506b26cd8b2ce5f85. 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/TCAJM2569806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431f013b4669b97d0572b5194f41d6ed0a3980a486add50980615a11f90051a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:31Z), 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/TCAJM2587175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aaec4b0d3fc9ac486c3ae653e86a7cabb581801ca157bf71aa501ecc384801. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJM2587182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e298c65c9b10f3eac5177ae0906329e3814f30663e787bce97257a8455a45d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJM2587186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016011a84585a64b9702d82e4d6bbe7a551bac75344b661649e0555820602669. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJM2587191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f772bb716d1e98a2dc147ce7f8d8e1dabd78d47faf00472478592ad979e17f. 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/TCAJT2517326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be370fa579b58ffd32cd6c5584090f7f8327dce628ad753f99e2bbde0334d20. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAJU2517337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0acd2c0aa9f229dee29f437a0ba797a82be9d3d9d4679e9dca0b06b807678. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:52Z), 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/TCAJV2595898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec8bf0c5d030d763ea43fdb8d73769476ba4f13a342910ef739ce145fcdd736. 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/TCAJU2595932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3127357a8ec4e7ec9db4e06bb4528169a6b3c5ab2efb81ca22117084eddbc11. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:00Z), 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/TCAJU2595938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647d988530326c98ec2cab390358f9a93c5a76318950c1787cf75212ac7154ae. 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/TCAJY2563043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8e335901119b9caeee460338d9a6b4673789aa0136d8705545f2842f800d4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJZ2563059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc22e377657104f72bc9d03995b824a20aa8faf3fd82f777463b7ae34286205. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJY2563064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826cf0f52158025e94f346e62245441bf4d6366a16f9768dd749f2c54c255f38. 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/TCAJY2563072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbad0a2bf38629d7a571d9cdcb6b0ebb6c656342ee2312c56d6bce5d7bd13a6. 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/QT65X2582228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06688997f6ead1d8dbd5d42d551bb8781bce20724d8895aa62e9ec2b5e2dfdb4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT65X2582264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93033d0bfc5194a36559b99db67137f97796676b85ea2cd06e9615fa016bbe9e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT65X2582272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb171ce5beb2a06ee793ce01f10729125f4ab61e1e88e689c656ee0ee5d483c6. 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/QT65X2582282.