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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d6e98e72f8a6403ee2240d36e657102ae7417560d8276108673bfd5b65ddce. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1a20fe0-ca96-4faf-ba3b-8bd325945880.json and https://artists.proofprofile.net/proofs/artist/d1a20fe0-ca96-4faf-ba3b-8bd325945880.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Grande Magie - Les chansons du film interprétées par Feu! Chatterton
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109881e4993a1bf117f08ea3d0fb782c9b67a284a83043043f0b4d6ae7a55d1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRDMD2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa551fda849984138d75bdf219b5b08fd3e70632c12ca973661c6dadb873bf8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12312119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68010f610be5a6b55980b8ed994d12eca83ddfb11242cb8be6fb1dfbaeb56b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRDMD2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe33b87bb41603bebcbebd61af41c48a42978a9e013d19a944220ff29b814bc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRDMD2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762ed1bd2b2fd513eafa00c7bfced51c2fe15575192b76338059bf33174b8cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRPZ92004940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40364a0b001ee789413bf605d9e4fafd90c1ca303f809e6781fc8110da946353. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRDMD2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800cb4a1b5ce0e372d4045ebccb674cff1b1092642d216fcbc79b9030180d3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12312124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85adeb46f9f44dc3896284beadb3e7a8071aa43ca6631088e6c5e57cfcd0a9a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRPZ92005980.
Un homme en fuite (Bande originale du film)
La Grande Magie - La bande originale du film
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32173e0a9e6b924c064d9f5423ff41ec48c9438e4bb292b82c639a2c0828d59c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12312132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f795e43775f1758f1350b4da383df934016dbc1f8ae53f9e5abf7af7e80532c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12312140.
Moi vivant (Du film "Un homme en fuite")
Vous ne serez jamais morts (Du film "Un homme en fuite")