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 0x2212042cfcfe07ce2d31c319182c67f24538da83287b1b15b1a93bb8b93661e4. 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/64341495-4188-4dfd-9009-f4b2dc60fbbb.json and https://artists.proofprofile.net/proofs/artist/64341495-4188-4dfd-9009-f4b2dc60fbbb.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 0xd5b938200debf5f8b070731f7ea390c3fcbf79b98a01ab9b013d996361019026. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:51Z), 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/FRP5R1100009.
Medley : Je Suis Pied Noir / El Hmam / lli Hab Yelaab Sport
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751b6217b832f7caafa5299ec208ad290a409c69a7c2e6cbbf2c97238f35a73. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRP5R1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0574566d29a9af1e1e4ccc7b044ebf2710c4505324073b7b30f4cdb1d8efc9. 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/FRP5R1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0d2fc2704eadadfffecf7fe4f4cd897418e33f0060d940479b16e56375619e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:39:01Z), 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/FRP5R1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf1289d830f39827f062cafe68be487a35495a0ee5299407ef2167edb16a44. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:48:36Z), 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/FRP5R1100017.