Toufic Farroukh () is a Lebanese jazz composer, working in France. Overview Toufic Farroukh is a saxophone player and composer of jazz with a middle-eastern flavour stemming from his bi-cultural roo
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 0x262de818d3b07574a5012e041b5f47486220c727b5a2ab7b032a8a9478f27a7d. 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/273d73af-53f9-40d5-a5fd-a624e7887fec.json and https://artists.proofprofile.net/proofs/artist/273d73af-53f9-40d5-a5fd-a624e7887fec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
8 Original Soundtracks (Original motion picture soundtrack)
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 0x94bb45ac054671289a498c755c22042d56e30fdf3d607e099fc31cbc88ca47bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP4U0900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6860513ce655b2d230556943ec612013a6dbddd217b0d82e00068d0ab6036f5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:26Z), 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/FRP4U0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024e50f394330ab5ca5a76af0663c82bad423f3400a8f5bf04735d0e13c3111. 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/FRP4U0800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab61fbba147687a2175987884fdf31856819b52ca249dd3052557990799c2f9d. 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/FRP4U0800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ccfcbd03c82ad94142e52f729ab0ed3e6f0fbf4adbf9bbc15f12b5373ab50d. 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/FRP4U1200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0945887c71527c8635afa99f03c044478be93901b8e198b2ddf8275dc46cb4. 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/FRP4U1200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366df3ead4e4b81165b7d891f840be61273480880f7699bba444f3d8e52453e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FRP4U1200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb11e49055d8dd0ae6387afc467e918d469e9bd0e2e362eaa12b28dd3ae62525. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRP4U1200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83eaf7bbb29385e5d22514632f3e16b4c95f94878c47cb1b975f02c4bc14880. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP4U1200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f6fd0c560cf0b3055e9e60507c35c6a5cc8e39b056cc8eca8bf09b7fbc991c. 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/FR6V80134849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b66de7ed578d5df4f41f8d8df6934eb1d611723f3b851caf8fcfa5db535519. 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/FR6V80134851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d8ba9993ca10d64475d7e18e16fee4083945594d3210693f2d24f771eedee9. 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/FR6V80134852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431fcab2d73fe06bdb324a14321a0077e204cbcfeb7a9afec6595c93a13dfc7d. 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/FR6V80134854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf312ffa7de1a64afe6d22681a5c328c9ea856caa356e587c7cb26a9ecaa9301. 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/FR6V80134855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba1a49305f302fdfd07558960a01953e67ead7df39b1e5146bea6269c82edd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FR6V80134857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfea3fdb58c244696e4ad15371b8e07572e434d9632e14a64ce3bf17625c8c. 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/FR6V80134937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa52da9751e9db21ac3d0b0889fbaed56700556442e2191e28f54806e075850a. 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/FR6V80134938.
The Pain in Spain Stays Mainly in the Brain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2131fef9adadb5567b7a8353651f8bc6f7e01ac0be6e20aad6d91c6a56f7c8a8. 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/FR6V80134939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e76a6a959e9ce4998485ef1fd6c5c9a7f4571ad04f4b98eeb5af11bd8b8b29d. 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/FR6V80134940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ea35f63ccb0fb5ceb8a953ad5706afb124a8b1781f1f25084d993f2ac2951. 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/FR6V80134941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330c08ee8dbedb995db7879e70a3d69305e5e263401423bd1b0046a3b0d44159. 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/FR6V80134942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca430aa01abfd0e4cd3961c90e0e266966af437b02a1187b728766bd0b2e2f9b. 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/FR6V80134943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd34be944f79b8bdd5d89396fbbaac3ff258c03f73985b2b221e4fccb3748e2a. 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/FR6V80134944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e75ae90e0d8a5413f9a50f2d24b4229bf3a70b0992a665943c30fde664d5c8. 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/FR6V80134945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a87622ab232526e24f359b70725146cdac512a8196813aafa952cb92becd77. 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/FR6V80134946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0471a0b7e969eebeb1de862f5da1965de27f1ac80e6c1aea2f8d4b95f6f96353. 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/FR6V80134947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608bb54be9169f94e22e1b3668510325db781a9badeab644a7d6d7a19b68d8f7. 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/FR6V80134948.