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 0x6db06affe5944a25ba37dc1df3ae85518efd93b2cec65bdcce4f9c4cf5b54905. 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/d570a3bb-a6fc-475a-9c4b-e7be4b5310f2.json and https://artists.proofprofile.net/proofs/artist/d570a3bb-a6fc-475a-9c4b-e7be4b5310f2.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 0x282862156c750e65e2337a9126928e22705d81f4a2f49bf1c2d5e3afc304e3a2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:29Z), 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/SE66N2238742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bf314a07bf01ff05cc54025087e04ab229501f2ddd7def2f71cb4296aa9e4b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:07Z), 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/SE66N2238743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6531b1c4279ebe11510f7cdf8ebb48a7c997ca24d853b225171ba6008ba6e30. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE66N2238745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ab814f119b21b6feb20e5a3ad85568fd1533249488325ac57b60573642580a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:03Z), 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/SE66N2238746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e6269882bfeefde70b13813fab362e139cdcaa686cf658a0b8bb57862c605. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32314437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd2624efb1557a2cc9e95f6c5ffbd871b17fcd8a9a66b5b0432d81061d1de2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32314438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b927901fea3c689edb98294473ba19850e74de7223f34434166291262befc2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32314440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16abbdd2ab8a104e18bfaac82ebe472fdd662f2030823747a8c1dd9d6d6bab65. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32314441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7df58ac3ca9ed29c7b050d80ed03169a56dfd5272f8da1c9d47948ffc0eb00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32314442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3360cb3a46a9e4a0acbae286fda4ae15450b29cbaf6bc064bb221616a90e9e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6I32314443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ee2b49bfb42bd9b221101cfdb4de1cb2f8b63571557ca031f641207886eea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:39Z), 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/SE5BU2445491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95989addf1af8b0ce771d330530112eb9530befff515192d9b31df51f49b8764. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE5BU2471552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4558faac23cf6630be6ce741fe736c67992bbf3bd1cb45e538481439602a1a7. 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/SE5BU2471553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde775081eab8eca23fb5518d4fd2a14e55061516b177380839fb69707aed409e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SE5BU2471554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3c8abbbf8cb5a7d734c19196c1bd6d20a1a95d5b3612915fc4f0b3b388bde5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:22Z), 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/SE5BU2564779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea494438809eb0397b01308db4d99fd8e6e77c74c306993f0351f0d4d5af0e85. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:25:51Z), 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/SE5BU2564780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec7c379fb3e85dad04af9a8ef2b205542711872c6784c430f87fcce7703c627. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/SE5BU2564781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeefabd53af4a8b7c85d64042b36733a25e54a0f5710a01f2aad46d5ede9db3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:34:17Z), 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/SE5BU2564782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2410afa8ff5219d878822ff11ad96d9eba1fcfebac9d0e850d06f911fc73c23. 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/SE5BU2564783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88261e1e07ccb1e6f4b3d5b7ec63227a71b8d31e6085e63305f06d2a3f35e91. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:27Z), 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/SE5BU2564785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eb720c28c7053c6798aeabf20f3452d3e34a459fe17e6d31c01c74140a0bee. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE5BU2564786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a7108857bac6a935d72ded51647532753e0309aa225b86a3cb96c022f916c. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/SE5BU2564787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5144d9b115ede8e95da406782be633cda65c0b353fa8713a958cbac36b3a4e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:19:22Z), 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/SE5BU2564788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab53a32a81a96fd4fe9d22a08554f5687e9908af5393f423f6c1a190bb5a8b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2344358.