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 0xccac5e3cc859079e21da76fe82ec2ceb08c54f6008dccb478aaa71454c0dd9d5. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfed5cb2-6938-47db-b22f-b0f30463c116.json and https://artists.proofprofile.net/proofs/artist/dfed5cb2-6938-47db-b22f-b0f30463c116.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 0xccdb12f9b8f43429d88a85c69cc9feb84945d8685f7f290aa51e413b82c38f29. 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/SEYOK2301969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b039340bebed6ee8a8c3de6b83f3690be6236d22015c77abafb3f6799845181. 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/SEYOK2301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c8c06e261bcafcb56965345b7965cdd8a23b43452f220c97ea772e9b43676. 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/SEYOK2301971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1b0bc7101dc79fb91dd42ffd681023029b44ae7cd71647077f1ba979fd1a46. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:52Z), 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/SEYOK2301972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe768c037368693d6b233a649759e638e99c2286648b02908cfea6277d8438. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:26Z), 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/SEYOK2301973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40886c1577e1eff1f827cee8e2f00b6aa8add06a67f9dc7e93f14994c210e289. 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/SEYOK2301975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78b9956cca04eec90e607b0977525bef42eb5909a01b6d38b33e740e3a0a776. 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/SEYOK2301976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a1fbb82e14a373e9e2ad32122e9b3a154ba50d9ca26710cf34547e522b1253. 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/SEYOK2301977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75cb765061e3f5ea9c40e371879b70f587073e4ac381ab39044d24df28ee8ba. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:25:17Z), 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/SEYOK2301978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71701554fc90b94b1c86ac483f8e2891c907ed9ab730a2b60a7e8d4100c26fea. 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/SEYOK2301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6888fb9064e0f32baced7d4921308f418faf703c0305519fa2a7def302c5f8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK2301983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312befc4ba3388abe7c70c8a4ef7ebe02e694bbef5877873400488c86fc6354. 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/SEYOK2301984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721192cd32afa764bd616abc71a19fbf3d2b3f857ffd99bd6a358dd1da5e97ac. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:26:22Z), 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/SEYOK2301986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be55ea9c97a0dbe9f2915ac972d7c856552b35309b56657b732a594a7190fd. 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/SEYOK2302146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85775658a208eebf845337c0684d63b9e8a983ff57795616764ad1c780c7cd4f. 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/SEYOK2302147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a542ba6b121f3beebeca269315368467fd22146ab293c1271f6284949ddad. 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/SEYOK2302148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaf0fd16171d439b953b20118bbf9cf415d233126dbe4558ef89882e1102981. 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/SEYOK2302150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a69d0bff6cfb9ed98882c069d29a2090863666408af1ee9b154dd081315b2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK2302151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826aab2da47a3fa95a8b9f49baa5bd0714cfde6c5220f6fc40bcb579ae9c6ea8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK2302154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81caa7e5488ce299fe597f4463273dc501febee6c4feb091a7ad81870b46e1b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/SEYOK2302156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5fafe5bfd5255cb02955454b51492b7c1532a127815c459748fa46edf37cdc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEYOK2302157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c44288f09434909c1a7e7f12d1cc005a554fa1fbd3e4b0afb4680911ddf471. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK2302158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7759c0269cc6021f60d7618f1a8a94b0e8143cbdc79aa602a040fd4dd79a095. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:46:56Z), 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/SEYOK2302162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f8a99bd8485a33700a0c9093e739a352d8ad9fb9de78594ef52bb8ebd1a80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2302163.