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 0x206f86aadf38cbcd7010132ee968f60c1f65f026466e7293ab6efe4b475ffc60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c680ea5-77a4-40be-a59c-632bf7651246.json and https://artists.proofprofile.net/proofs/artist/7c680ea5-77a4-40be-a59c-632bf7651246.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 0x4fce2d781732fa07fc85fcf1c960481f4d2d019ab277ea9957714f82c3da3026. 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/USDY41705620.
Watch City Presents: Moore & KASZ in Late Work
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c73074272e52fcf59672c4e81afc265fbe909c891096bdb8104cb639c97de74. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZFZ42247762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85962fff9468cb584cd2fbf77e54170bd4cb1ef90da3f27c154c2deb9ac183c0. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZFZ42247769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb5ab7e11336a6ac20af4c78de138a5c1af596b115f6ed7eff2d16b83f11b52. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:39:12Z), 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/QZES71916395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d316f8c2e5d79b5675c599d9a757a42c95314493ebf8927a78bf1146364528. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE5VF1906649.
Watch City Presents: Moore & Friends - Live at House of Blues Chicago
Now That I'm Paid (Remix) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc50758527f6e8b9176261ffa4f82c15b3f02fc380bf8f6a23512a2673edb7bf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:39Z), 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/QZPLS2174708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5b04bb135f922e023f7a13a432d20977a6b987724ee29059d6080eb0ee29bf. 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/QZNWX2245978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3c5746f8f3ed97dbd1f8fbc01fe937efc9e4e2a954f81a5447feac73d32b0a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:34Z), 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/QZTAW2202037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87d0207317285c35b6d774e11160c45375ce473e53a5167aab1f25cec3ecb48. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAY2389773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41239a1f5b332e71c0fc94d95661fa10460487b72cb299527f168def87cae444. 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/QZTBE2469287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762d72b62349929ba764d65c678cff7ae5b4b613b157c713cc3f5e8c71079cd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBE2469293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937aa4277239c2d9721c1072ab1936411d09c6c66f7fe2d52d77bddf40747a6f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBE2469294.