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 0x9c7cc70ccc8dbe86b72f5d0ebaf79ce5fac90fb7b1d149bb45209e48794fe6b2. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12fe9426-c0ec-4574-9722-fddf11092882.json and https://artists.proofprofile.net/proofs/artist/12fe9426-c0ec-4574-9722-fddf11092882.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 0x5c273e3f53d017548e198ef5fc63d60430ed78bb664ecd4673727c8d4ad8538a. 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/ARIXB2401984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed4e4a629936ee0bdbfb16ddde6f32270df1d33148156a7f529893431c99cb. 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/ARIXB2401985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c767addb950a18296ec950f5f93a6942129eaa77a70a719aa3f4dafc8c240. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARIXB2401986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae757e6acecb8767ae42abb2efbc10712e99e3647ee7f1c3b30b4099931792c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARIXB2401987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f215422532d82324cabf3927cac78fb2c9e2b7ef2c65973c2804082af38895d. 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/ARIXB2401988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b981564c4efc26f1294cd0df724240ac9dee943e3751a0f742f08f3a030afc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARIXB2401989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2069f9490a2b769fdc77bcee7196f7749d45420a2614d5883ccbaebed96a9c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARIXB2401990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a05905005897b72810d06b59002129d4f84e7e8c89cf47b9c72b53790f51c. 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/ARIXB2401994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987820f888a1ddbb34577c3618fc333ae80e4261336038d56af9ad20a996317b. 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/ARIXB2401995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c5b9ea0ad458d65f1fb06a0c8e295bf9c758eabc171ba4170aa220ee43f7c. 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/ARIXB2401997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6fb50e555863f62cec125972366f8a39f95352855d0a2b5204368ed3482de8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARIXB2401992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959f28ead4370c41ea6fb842b7b095c4bd6b9ca7bd26a661eee89aee0b24f20. 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/QZTVM2357744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71848a3e0280715df3f7b4100f035c11daaa6072bd8405382fff09747cbac602. 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/QZTVM2357745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d61a789fdf940750d8477e78304e52d2de7a4b05001a5e21ee72b75c16d6f7b. 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/QZTVM2357746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd1484d2a71e51c01f364aeed1f72aea2942a785e3142cf8f50ef5e29115366. 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/QZTVM2357747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0044d4f758ebe3d3919d817a26cdb9f9c5625af796c5d4e3366b6cacdc393266. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTVM2357748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549e66b2023ba39e5c1924de71913128909ebf32d56d3052d5105a826dc9318. 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/QZTVM2357751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac588a3bc9786b739e9530a884eec8b87768828d098e92c527ddf983922320cd. 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/QZTVM2357752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfcf2d2b8552912b484108956fee8678cbce0a485f654606eab7e97adf0ff5c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZNJZ2346495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d02a748ee3baa3054b73e9f85f92b37d0103e03b993ebb9243a3bf9b62f702. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJZ2372133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a9ba2f15d8e1d76913cd1697e6b4bdaaf48d45a54adee761b64f2dd1a49b4. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZTVM2357749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4e1524b38d3b125d5de2a097d1dd35e6da5d2d62d65299f2fcc67796ccf0bd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZTVM2357750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552529e0912c9cd35e7eb630b54562dfdce26322aa49a291f711de3d567a15ee. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZTVM2357753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d6f9e06fffa863bfbed08bfbb707c71dd7fcd71c9c0e0da8251e8506d8c5e5. 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/QZNJX2124122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ee1676e5dd2e85b0293dad5d8957cd1bbfa4d8f224322b09f1f384a10149c. 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/QZTVM2327633.