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 0x0089be2cf4b5ce0baf3bffbd2919e131a4aba762f7e8137a211bc8cb7a4de415. 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/2edd4d15-3605-4551-bbaa-b97872c4fd2a.json and https://artists.proofprofile.net/proofs/artist/2edd4d15-3605-4551-bbaa-b97872c4fd2a.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 0x188b2d5fe1d900aa985fe111bb2da95a96e0b6de394631c67d48e40ebcdc6b72. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USG2M1500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c26bd5ed4b1914d35e196071a3d38d0ada697dc9b2a7b7f8d0d7ea75ec768. 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/USG2M1500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8edab394b6a9039e528d56434de8c55ffe607d6b919237b297e05bf1da34fe. 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/USG2M1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2a2a90a39fb0803208334781efa511b07b138893c4533abfaf03ad541a2434. 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/USG2M1500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a9584ccf123a759d19f7a283858c2e2ffc1458069546c29647d5928316544. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USG2M1500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a774a69599e98082efd4678835c92bd8d9afc5582e62693e6c9b8e9ea19d3. 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/USG2M1500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2625ffb335bba6f72ccb763aafd3fd408b6f8d09e6e1ab0275ee4ee2cc29f78c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USG2M1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b441fe6b24bf9f0038a57e61917ee1880e50a82f90314d64332128752d531f3. 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/USG2M1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e703d0fd0a5a9aa22f6a463ba37dfd0f6dd4d3e55984ea315f602040ed2f5. 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/USG2M1500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3714714b25c74b313749e1791f26098f283e9e26bd25963309e30ac2f28842ad. 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/USG2M1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aaa199cd00b9e41f9de4c1d8047618264007839efb4b8c4da9bc7bc09cdb40. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USG2M1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809cfd8091100cd0bde234b88bffa6f224244658e00405c981603b3dd0bf5010. 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/USG2M1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809cfd8091100cd0bde234b88bffa6f224244658e00405c981603b3dd0bf5010. 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/USG2M1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aaa199cd00b9e41f9de4c1d8047618264007839efb4b8c4da9bc7bc09cdb40. 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/USG2M1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3714714b25c74b313749e1791f26098f283e9e26bd25963309e30ac2f28842ad. 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/USG2M1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e703d0fd0a5a9aa22f6a463ba37dfd0f6dd4d3e55984ea315f602040ed2f5. 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/USG2M1500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b441fe6b24bf9f0038a57e61917ee1880e50a82f90314d64332128752d531f3. 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/USG2M1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2625ffb335bba6f72ccb763aafd3fd408b6f8d09e6e1ab0275ee4ee2cc29f78c. 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/USG2M1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a774a69599e98082efd4678835c92bd8d9afc5582e62693e6c9b8e9ea19d3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USG2M1500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a9584ccf123a759d19f7a283858c2e2ffc1458069546c29647d5928316544. 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/USG2M1500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2a2a90a39fb0803208334781efa511b07b138893c4533abfaf03ad541a2434. 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/USG2M1500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8edab394b6a9039e528d56434de8c55ffe607d6b919237b297e05bf1da34fe. 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/USG2M1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c26bd5ed4b1914d35e196071a3d38d0ada697dc9b2a7b7f8d0d7ea75ec768. 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/USG2M1500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188b2d5fe1d900aa985fe111bb2da95a96e0b6de394631c67d48e40ebcdc6b72. 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/USG2M1500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2607c8c5206e348762062e06bf85e0631ec34023992afd9cd4d4c423a73fc45. 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/USG2M1300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b662248495dc1f365ed03de6b0cdb4ac25e9efe270f7b5835fa984ae72e0a4c. 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/USG2M1300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eba1addfac12fffc60f14e81c9a4799bb3e285404f579b66e5b58e5f74ffa2. 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/USG2M1300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987eee40d03025db42aa43f28e153dd91c95473f9cfd1edb744ec974ebcc1a5. 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/USG2M1300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8e572813df52392a2dfd50c1950b4af3f70ef4c1fcd5657d589a20169a990. 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/USG2M1300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa83177e998ab523e4844c50b8a6c69dfa699a73a599467f6c0e74bf69630c7. 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/USG2M1300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf190b2ab5e5561f1c8c4214dee88b86cc66aac5bafcac60a4ee42388ade41328. 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/USG2M1300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4edbdb5a578b3884673be23c574d4780b2f37da4031a104d7a1a421c2acd0d0. 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/USG2M1300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b3c10eca21b605df7f27f7d17fdaf5d2f869c2d82ae78005f8c065185eb88. 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/USG2M1300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38704146558142d1725a662b555fc5183de0729022d9a28efb4de2de812354a6. 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/USG2M1300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b9fa43428a6b17863ac568b95cc53d94f25fb564fe3d1b1c1def4652b728c1. 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/GBRKQ2193046.