Marc Déry (born 4 November 1963) a French Canadian singer and guitarist from Quebec."Marc Déry en Abitibi-Témiscamingue pour présenter de nouvelles chansons". Ici Radio Canada, 18 May 2017 He was a me
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 0x6f0c36751109bc6f6746d1f2c75dc817bcebfe5461069a872baad67a45fb711b. 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/c00efde3-0820-4b8c-839b-ce72cbd0683b.json and https://artists.proofprofile.net/proofs/artist/c00efde3-0820-4b8c-839b-ce72cbd0683b.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 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 0x8e6eba50faabaf2cf2dc687d9724a51a0bb49061b05f67d483f31fdbc0200375. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CAA509921002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8017a0ee53120902fd85d14ba69b73c5d3f800b229a46d9445e1290f0e4c0e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAA509921003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e5c0f497f92c75c2f56f1e250168409c0b73066199af76b419666e87252fe5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CAA509921008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ffb03cdc4946821378bde093d53a39650ddd14ba7ff04dfaf3de5d40e88d24. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CAA500216005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e937ceb5197bf07a7cd36779648bffa2588440e3862cbc7e78d97207fdaa0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CAA500216008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8510f3afc81fb4d871a4933bb9f4c9837b64ec78c310a3aa6809da006308c123. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAA502553801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde642743de26be3f0b914eb56e9a6e84a57bf5e5cace4960cee5ca1e70143721. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CAA502553803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daaf072816448486a421d55671eebd6a4968fb3b5646b5e7108e594f446a640. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAA502553804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdce03c56d66467ec7c9d3e352ba83fb3e15f35c5a4d84ab226c3caf28f4f02. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CAA502553805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13666733488b088a51602c4d3b12a6806b338c91dda6ecc2c148e477c9aa1bb9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAA502553806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc4d64f0912c2b24768d25f03306ef5ffb455b1553a44c8ae2eafab235d66e3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAA502553807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108bdfd3a54b8c94a281d0d0516c258b0d2d099c7ef368b3e116cabfd9fb4b9c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAA502553808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3557e50653ac50085392a783a40e08ab5c739dedcd60fffa714172e4e5740185. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAA502553809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b793977f3b6df7173cee8eab4e3b3e174a423b1c5e51f106885cb4d9b531de. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/CAA502553810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6656d6f48961f5ecc208c8d4f1afb9ea1996932cc67f30c57f97bdb03b538. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAA502553811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8740f0a72407c210b6f78f8acf70a9f4acb2c1fc5c37fa4907065d42d2d85d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CAA502553812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4933db49dff29609b7ff8694099c8325edd0508b4bfe34e225eb627d014012af. 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/CAA501430003.
Serge Fiori: Un musicien parmi tant d'autres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034e2570480d35ccac301ef24ffaac53e755c39902c2975fda1228979bb6421. 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/CAZ520620101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13b700932caaf3582658e2d0b892cf88e3be61fa54ab03f293f89aeb543dc0. 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/CAU111300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a5eebe7fbc6553c2f1122a0794209b4429471671856506434e8e610547c593. 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/CAGHF2400084.