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 0x062649868a51c13f3ecdeaeb507de0483d52281d1b75be7ff4406fec038cf189. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edd6cf5a-9cb5-480f-9994-d1ac3c2f1c43.json and https://artists.proofprofile.net/proofs/artist/edd6cf5a-9cb5-480f-9994-d1ac3c2f1c43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les réalisateurs: Les plus belles musiques de films de Jean-Pierre Mocky
Un linceul n'a pas de poches - From "Un linceul n'a pas de poches"
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 0x52af43cf9aadd070c32de5cc37ddff9ef31ba154668793a138ea4fc9c258be9b. 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/FRX087490043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413d8162e06d37ee59ea757ae102f1de0f0cb73c14fadc6922ee46935d2434e9. 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/FR67F7700900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b92da09fdcb910b90a675af314206306de5b6917cf33cb4ce21a87023a173d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR67F7700820.
LPC 1069: Light and Bright: Mark Duval and his Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672508693d72bedc89fdb3179a7f4a6004552e255af344c4259e9e16f5e18b2. 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/FR5R00909386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bac2928f3648bea457aafd2745c69c53f37a301c7ca529648d6ff700184807. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FR5R00909387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4998f029d8f5b2bd936cbc3322e2c57e51048ff43fc7142f83f4db0631636. 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/FR5R00909388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95cc59eb3fa832c824433e98c4fe1eae3b13725e35776746b375508d5bafd76. 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/FR5R00909389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6335064195939528122e216842a7700c094adb25ca9c95fededb477bf505cc93. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR5R00909390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18804ec5757765d0a7ac52703ec77b658216a847325ec1e79b2745f6df67ccbe. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR5R00909391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a024251c0a8c7c8e1803f90af3244ad1d829cf35f03b8aa484ed1d29cfc9d50. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR5R00909392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3213e9b2af6b62a14737a4efb2e78d1412836d62abe0b1b06915c0457a0be9f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR5R00909393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0cdcfb3000efb369b2f73cfcb593d3e89eda009f61dc67cea1a48de26c5a6. 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/FR5R00909394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c3700c8c58bae16107e07e5d8d4ef4e864cdee0ca134fdd7d301ac0d4ab5fc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR5R00909395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69d58a1250bde628716fb639a77106eda5805fca8d83d49ddd7445d8097995f. 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/FR5R00909396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb5bd5d0ecb8d91ead827c4c85b67c6a477317faf733a93dff3abe5d5177d8. 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/FR5R00909397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8615472b7ef8ef204d98c9960bb471f2e20ed07733a05e6fad8d1ab20ac6a338. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR5R00910365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d4372b0b189c05978db5b1ef428652e88223778156326fed08e0fcf3bebd1c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR8E42103001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f8d93633abd9e0bf5fb6885e7ceaefe61ca2a8ab105535fe7923f4031e58ab. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR8E42103002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f4fe037fc9c04ab3b1c6d0ffd0e29f5f5478b6de42e70c16a9e7b95345d614. 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/FR8E42103003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ece41900e3436ffa6c41bd8b9201c5dae61463fee1c508f276b85df41b16b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR8E42103008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699554e8cdf20752df9ec7d6ec9ec7b19787d302c4de55a08fb251551408dae6. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FR8E42103009.
LPC 1071: Soft and Sweet: Mark Duval and his Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfafefa8f5d3b4cf8ef76bd05fcacaa3c35a55693eab2324d6ec933db5c16a2. 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/GBAZC1938001.
LPC 1075: Light and Bright: Mark Duval and his Music