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 0x4098a0743ff290997985004d9aa6947085fcd757c58e0b3d93ccb9dbc81d96a7. 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/ba9c1e7d-6e84-4958-9b0a-5614eae1c9f4.json and https://artists.proofprofile.net/proofs/artist/ba9c1e7d-6e84-4958-9b0a-5614eae1c9f4.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 0x44e8f892a7635359f78dcf6cebc41d7872e87cbebcbc79fa571cf68b1efe7f7e. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/FRX452255961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3be233a04597112639ba6bb38b763c3f35347e78d8ffcc87bdad61b7ef0684. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX762313087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3be233a04597112639ba6bb38b763c3f35347e78d8ffcc87bdad61b7ef0684. 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/FRX762313087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f5ca06545254966d4299ac5110dbaf3e3f26a127b5719d2130c2b1a82f1137. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX282435793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22abb9dc8645ffc44f44cfc4c7eb3c11bfa22637900ad9317fc919879f9a08e. 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/FRX282435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8289de27f4fc6813ef581472c3ec47278821e4e3c686275f688c4bf5b19cdf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX282435799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8492c12d2f9635106dace8b655a87e7dd49e92ee5636fa60d86194451dda0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX282435800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37046852c1169e61610038731db90dc26d3ef64c358fce7700a7a8108d7aae03. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282435801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620dc11f90b5a7c6fcd316c785ebb566e7deff0c98e9d441b107f4508e90c286. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/DGA092472780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6795420fd054290b60585369843ff6d125e46edda924a045cea6c66235a0a51d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ792527191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1674a183ba6709878b7b75797cb3b52484a02438d1e099285de349bef2da48. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ792524196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9de1fc626a90d1641ff5178ce8f8d2dc4c36826d8147a3f7d7bb236c8786b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ792527475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d6c9c27b65a76a1ebd305b9f3dc27eee7083986ec5843e66031577c1428391. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7V2513840.