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 0x4dd7090679ed6a8fd44f0c5332bb9832fb7616d644eed3ba69b7d71e4cb55249. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b9519a9-4815-4629-990b-146995deedaa.json and https://artists.proofprofile.net/proofs/artist/5b9519a9-4815-4629-990b-146995deedaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blessed/Shattered Serenity (Short Film).wav
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 0x7d73b5de3a3d71a9caa3aa8be1f47e55b77d72ce08e3d03ff4f97970fe36567e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:16Z), 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/QZK6J2361568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06af1e3662d4a3de7aa3cda2ac0c66f3abd7d5024fdae69fb079e4209cc72f3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZFZ62404518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4f4912f224201304c1a9c660a96a85a829e9c5ff9f72705c1bf59b34076a52. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWY2412732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d0163b9318d343b0c59db784d1a4dc29a4db710799c54f49d36f1fc90da47. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ762445217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce62ff04e5b296f81f652bd0d9b834cc8a80da281037cfdffef869322789e00. 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/QZFYX2562214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf984879820431bd019f6254206dec7b8507b0fe34bb8b2b1270d38aff188d80. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:01:56Z), 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/QZHN42521134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2ba63d3528c28948489675027647eaeecebfb8c47f4d89317d4a6dceaa7f5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:42Z), 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/QZZ7T2570560.