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 0xfc93851c8fa214861a8afd5312a84e5a4d2e0c64d38a2207a863f60471098e03. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de2674f-996d-44cf-9468-fde679baa193.json and https://artists.proofprofile.net/proofs/artist/1de2674f-996d-44cf-9468-fde679baa193.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moïse et Pharaon, Act IV Scene 3: Des cieux où tu résides (Live)
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 0x002e52620f85db390dab466268de67029898dd84873feb16d9d644b593e22350. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKI192019517.
Roméo et Juliette, CG 9, Act II: Entracte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a92144f06b991ecf3404395101a389b4a45a42ef8ccfd5cc612a46a959ad9ec. 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/FR50X2311804.
Manon, Act III: Toi ! Vous ! - Oui, c'est moi !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf589911a3e1fed93b35bec8857381a744518588e6bd7fb8cf5605ace9d8862b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X2311805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3945a175eb258e1cd57657f0c65d866666bbc6e06233e050b15913ff4ac962c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR50X2311806.
Otello, Act IV: Era più calmo?… Ave Maria…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da0221937ef4457354e18b2f47b1d8b2c950bdac08c0b6324c54c92eba0663f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X2311808.
Le Villi, Act I: Se come voi piccina io fossi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c22952a5b0d67b85d5fc2cd3a77b63ff31c8dff39b2150c140f3d8102bd9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X2311810.
Thaïs, Act II: Ah ! Je suis seule… Dis-moi que je suis belle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f3642fbe91d39f80f949f5810654a86aa26498b6d0dbe9e3b07e2301ee3e29. 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/FR50X2311811.