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 0xeb05f304cc6d1dc807376687b8e6e1db655ac02ffe4654cdb1ceaf95cd57d1cb. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f54cd49c-fb4c-4747-a203-aa31ad98f562.json and https://artists.proofprofile.net/proofs/artist/f54cd49c-fb4c-4747-a203-aa31ad98f562.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Album Rap Simalungun Perdana Fabo Sumbayak
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 0xd959aa97a4bf8d96da7531d727d40483950936fc53c02463492f993fa44cddaa. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:21Z), 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/FR10S1772800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2afac451624bed74f49af519ee74446edf8e0f6ded49a5d52b5f7617b31c88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S1772801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc9d2ec3842dad724ee7c5d8550ca2d5c262d9de37ca78f2d05c8c94935e756. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S1772802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f2388d6b4c84cc5e05a4275b65417eed6fae0e4eea9e85ea70723a3c559e81. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:41Z), 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/FR10S1772803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f84fec0d50756a1d80947dc1e4f4288f9e7501563e442a1ac666f609a3867ca. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:05:22Z), 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/FR10S1772806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00825dd9b6e53c144f7068194aa775d773e35593a3c0987cb440df9026e6093f. 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/FR10S1772807.