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 0x25a24c8ba23852657382b1155bf30a5e19786de40eafb9e2bc97862e0ed58890. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f1027b9-bc7c-4899-a745-fe37a263e850.json and https://artists.proofprofile.net/proofs/artist/4f1027b9-bc7c-4899-a745-fe37a263e850.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 0x51e4faa636a01c128bb028e8a0754ea68d8489e7e565ced4f7077931d646837a. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/CALP71400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c47ba41b41d3bc3d3b6d7b2010e1626eb46405b8eb55dfa588969f926aaeaa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CAZ841600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a56f36d5819da21b0e826ad5028327e9bbeaf5b043fad0a5ef92858eaba885c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CAZ841600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fcca2abacfc54f037ebcaf9ddee09aa73cecbf88ae55ef9443ef93662b9140. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAZ841700034.
Les Deuxluxes No Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bcef08283e9a838db2efb27d6f1543513d463c99853ada4ccc08c56bab51b5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAZ841900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e4203453494b961ccd1807dd5c09cb071683ef1a369da552e9550c89393e2f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:25Z), 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/CBLP72400001.
Tu as tellement changé (avec Les Deuxluxes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a0ac261b9e7f7dbd77c512974df4d9fc1352d7e29f3e9ed98924735e516a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CANTR2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a0ac261b9e7f7dbd77c512974df4d9fc1352d7e29f3e9ed98924735e516a0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:26:26Z), 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/CANTR2100010.