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 0xb3c2ad4b2cdc1070d4522d76275303e9b82b2c6e0dc8ba00182badf29711289a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9adb31f-e2bb-4892-bdd5-fa316e0aba60.json and https://artists.proofprofile.net/proofs/artist/c9adb31f-e2bb-4892-bdd5-fa316e0aba60.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 0x7f53a996247913ef2093f544b50acb6f564f6a221e5eb065646f02bbb0f6c026. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USE831548678.
Can't Stop the Feeling / You Make My Dreams
Bridge Over Troubled Water / Sound of Silence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad7bb230713c199e80c30d50e7f96d92bc9309d7e0bb9a310e3d7819eb41e00. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:17Z), 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/USE831586879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7162065062de713fad26d678d9d33a550401b59e137e092bb7382739ea64b824. 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/USE831588523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d4375392e86166eaa28c98be2b0bd5170a2cb97a68252ea464d9f684d51de1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USE831582122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e94aeee2167af43e3d7e1f56e32f231a9fecce9118a15188c910b2b253c439. 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/USE831582128.
It's So Hard To Say Goodbye To Yesterday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b968689b096c3a162e7bf91bdb6ade82e0c573a5acae864d49ae0d862fa9e0a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:17:43Z), 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/USE831582130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b109905b9afe52900f57364079435185cb8925ea90dbb1dcba129c050d1509. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:44:57Z), 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/USE831582126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d87bc67758bfe1e50ae9e5e533bb19a06e6a99cd91d2863b802f9af91c34a9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USE831582138.
City of Stars / Audition (From "La La Land") [Mashup]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ee9d3093155123cb97620413a6bab5661da3d994d21c21fb09e26bd2b42832. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZ22B1820471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968adab3ed9d501cf005d92e1a73323d15ea715bef4ccbaf32ec4e612a6dde19. 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/QZ22B1820473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15054cbefbbef9ab0f81daf9c76aa6e08ce33098e87f23ddee1ee8e948543e85. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:42Z), 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/QZ22B1820478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceef613a9b5febf912a108bc0b9ad57b59f669116189dea20624adc0c2965992. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZ22B1820479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f9ad530107390a92c0842be4c10dad5d912a316ce2e1d59a6f07fe09bf5fad. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZ22B1820481.
You Are So Beautiful / Beauty and the Beast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7147c061514484d3c7d0b064c6e7d264cb6ffd6077dc4d877fc943a986e5623. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ22B1820484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8346bd6d080f0bd04140cea836803c7814cf7b17b51efa33f067a65827195b38. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZ22B1863173.
My Heart Will Go On (Theme from "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4935e3367f9c5ff7413614a7412bcd855f88ec7e8cecda71e726a13aa4d4774c. 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/USY281609791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3ba23027e717aa76c3d18e9a0a83a00da83dbbd1961922a9a9cd03f68473b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:36:09Z), 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/QMAAK1814208.