Barbara Weldens (born Barbara Jacquinot, 17 April 1982 – 19 July 2017) was a French singer-songwriter. After releasing her first studio album, Le grand H de l'homme (Man with a capital M), in February
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 0x0f0a8601734bf237c2741dd66ba69943a2da66c8e8514c8e2d87a603aa6ae524. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/854cafec-228c-4378-b9ef-51de10434b49.json and https://artists.proofprofile.net/proofs/artist/854cafec-228c-4378-b9ef-51de10434b49.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 0xa924bd052133f0b23e7e5777d569faa82acaf91c9492bfa1beca303d48f03687. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR9W11611165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575ef97dbb0087cf6556d4d6fe13833c8be4fa02ed6b15978c7166505e3308e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR9W11611167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21016b44d1f2ceedff964a22ea5e9671ebcdfd8ac02f69a9a0cc4265be7c788a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:43Z), 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/FR9W11611171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d9e344ff3948e57c6db4a8f6168cf332023087f6fb14a735e02966e15e619. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR9W11611174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc0a9f7946c2df35f461b66fcf948c0377bee7dbcdf1c07664b2a33084a9982. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR9W11611175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3424577a4ecf73bdcebf6b45a49b11a287ccd7563770eea050cbc6af90e97d84. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:36:59Z), 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/FR9W11611176.