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 0xddc2fc0295c791aa824b9d10cbd4e0d95321d509f227dbd1d2495d26a449247e. 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/832c2fe7-ae5b-4e68-8755-6a8ff4511892.json and https://artists.proofprofile.net/proofs/artist/832c2fe7-ae5b-4e68-8755-6a8ff4511892.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 0x11cc30c8305affc956813abda2f2af4f64f051d182aa579cc685032e75e87a52. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR10S1734206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05263831d68c6a906fdad21391c221a24e927c2f807750f02f95c8f9c1b0b304. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR10S1733839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158d0fd9b5c7b4515ae245843475319522264bc739e06d7641f0184f9601b70. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR10S1733847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162971c0b04c8015447863bd39e7e666a44787dcdaf1ed6b38862bf57c3c3335. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR10S1734190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af1e4d7ce33f5c1f10fd61ce477008c971f2d3cef943a88864374617a87ae4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR10S1734188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b737f06bbca999a10ba44388a7d418ae9aef6ac70eb24204e21552a76d55c90. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:52Z), 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/FR10S1734192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc5b0293ec24f70c65ad34bd6945f8b31a143c9fda47cce63f8fa213e155816. 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/FR10S1707213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9efd90e130708f27462177290e5087f5f43940ce4aafe35f85f55db779bf3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX762048012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2700c15e0aaf3e5e8ffc3308facf411f676fd332499a3b679f738f6b168dd6. 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/FRX281737793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f39c470377bb069a46e52aea9dbd8df09ae0d9847965ca90b7829ad6b63ee. 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/FR96X1746614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2808d6318ac0d4b354cc5598ec9649dc3ac4e2ef4d916564b1c8833482eed599. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FRX201839626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0934c69a33799a303577abea812c869a23da8147949973d2ed9ef638f6960d4. 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/FR59R2075584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbb8eb92bce5d78052155ff8f35195e9ed54c9e5f8ff7ebe38cd1d02e1790f4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:43:45Z), 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/FR96X2251720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa94a2233e4375935bb90e54ab30a68245a68e9bc5fb8efe8b25a9335bad3b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX202246343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d991955bbfe7f6d8c7922e3ed9b9c8a05c45c4fed7012c4ce84a61f97b3f538. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:45Z), 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/DGA052297122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b61799e83919a39dfaf825366d22ff1ec8ddc1c5bc4727658366d9bf003a87. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:05Z), 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/DGA062273353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601f97de68a232b98280627e05810c48f718cfadbaf1e89cee699b0b6c23bf8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DGA072252160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e122da5a93300196e5e2cc9f64af825259385160a93c4700ab1dc54a54ffee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA072252161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe708866ca586545a3083d99ccf9af717e7bd09f3757387ef17ffe492eceb1948. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR2X41873517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8def766c3cdc62774cbec3f7c1290e9683308847d8c14d9933256eec28c2c8f1. 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/DGA072252162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c80062d8aa2bd456ae686a2b0388c004f104d504c06ffe4ab99016462c7edc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:57:46Z), 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/FRX202053328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdfb2bd67fccf5618557436fabd3792dca46d29e3396a591eb56fc4c83be6ce. 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/DGA0M2462587.