Jean Ferrat (born Jean Tenenbaum; 26 December 1930 – 13 March 2010)Jean Ferrat est mort (in French), Artistik Rezo. 13 March 2010. was a French singer-songwriter and poet. He specialized in singing po
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 0x8e329065328303bf41de9a15998721c55448648ba69acf8a6cdd0d8ccb6f5065. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd7a5693-bc12-4a4c-a1a4-946025020e57.json and https://artists.proofprofile.net/proofs/artist/bd7a5693-bc12-4a4c-a1a4-946025020e57.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 0xce7f1816218baaf5ced41a5a0cf0c893d7785435b70acbcdde552668ce66f441. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR62F8000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acae499d260af30d9eb4bdc7ead8daa343e9d8769bb5cfc401972de261f8b9b. 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/FRZ016400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b43e53eeff83e2e22e4eb12281ce2ff50056ac62236e6bcb43ced0ddfc7383. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRZ016900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9756a923cd5f913a349812885ccd63fbfff9203d69ed7d59732c386c9632691. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:45:15Z), 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/FRZ016300690.
Hommage à Jean Ferrat : Des airs de liberté
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a80ae2db54cf4a28bdee73d3ab37959b796066a49ab6a1770aad8fb9ad9f6. 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/FR62F8000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acae499d260af30d9eb4bdc7ead8daa343e9d8769bb5cfc401972de261f8b9b. 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/FRZ016400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a666d4372ea8a18047cb09ea889e6b1ebd7c6f2a2135a99370f3cbb75110c7. 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/FRZ016900750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acae499d260af30d9eb4bdc7ead8daa343e9d8769bb5cfc401972de261f8b9b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRZ016400500.
Ma France - Chansons Symphoniques (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13af9cc873e6db5cbc8e57822edae629f7c240eb6a2895afa355c6b7821044a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLB151900678.
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 0x76c062fed1b83374d6c02fd6a66f9902d1b043aa05995a700d6ebda99a71d1f1. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLB151900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5a75547d6c0516bce956e787ebb6c9699443c56cfa34c96206c50dd5e502cd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEUM71001943.