Denez Prigent (; born 17 February 1966 in Santec, Finistère) is a Breton folk singer-songwriter of the gwerz and kan ha diskan styles of Breton music. From his debut at the age of 16, he was known for
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 0x3ac3e424c6a7a51451c2e30cbe1a21df9f740051daeae3f80971cf01022884d7. 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/c465dded-4340-44b1-8145-230b4bdf9401.json and https://artists.proofprofile.net/proofs/artist/c465dded-4340-44b1-8145-230b4bdf9401.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 0x7a138305dc2bb326922d6675af82c053aabe909a5094caafd6bafa4e4f329447. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRZ010001130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f39b02c975b2a0ec6577810bd8437574a7f01b8ceead96ed51656c5bdacdbc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FRZ010000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341f4307d57d90c115fa39cf1a279ccd772dae25eb573caffd75a0555e43f4f1. 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/FRZ010000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065c1aa995bc4632a8cceb5dbd733922118093bc1592dc13b2624127e512056. 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/FRZ010000860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663ee6b78b3bff2695b2bea09a8cea805908561e6646b08ad7a4f3c33912d643. 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/FRZ010301710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b9b840df0fbbbfd01cf757428cccca17f38363804212603114f03af3cbdb10. 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/FRZ010000780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a841f3ac4b6926c3631ac0e9ba840feb26730f754e0ec54c7640868732ccd. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FRZ010301740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ca77919b243a5091d1cd6295f047f0d8523bbbfdfa5a270d9744d8d093326. 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/FRR809680140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0a8a8339a7822c8da585bb7d09cc4d0e31334d953faa38d548aabf79a6e75. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX611400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038d10f1f196f8c5e583880dbe516f89efc9321c32afa0f201c26a944ec4532a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX611400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9e95015812eba99a14f96d01033e7c5b65f131f680845b05d6712bcfe565e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX611800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea880457b88abd4113686c75dbfd48b6664ccb3cd8170deda70b71a06e287b0b. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX611800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcdf115f1c2ebaaaed141fd6f6093eeb0b5231b6eae33e56f991ae6d950fa09. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX611800110.
Denez Teknoz Projekt - Trañs (Live à Yaouank)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1048ec46ade3aa8ab0147c33733ac5c211f98353be8b3490b8d9d83710e2575. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX612000000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a03d138e873c25376cecb2ae119127227e3d52421194ee9695aa062347bc38. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRX612000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ead413029558d8fde3d686adac70bbfd32da28179eeaac61d8defc08859716. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FRX612000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922ab43baa4fcd775ac98f1acd1df42c9c62bdadff2700e543014e90230acea2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FRX612000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962fb74e7926d515e12d4386a5d34d4b8c241f7f4664f736a8585a7a3b4337a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/FRX612100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82adb4060c0453a5868bd4d93034bc44a94f3a4e142d10440d33cf8311ddafa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX612100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bacd8a9b2ff4e51481cb052ea1cde2c8e88424663a4b7ce4130b2541ed0e66. 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/FRX612200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087909af1124934d31e823f21f6e17e484bc98ea47eceaffbace15de29ccb578. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX612200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39112cb08d8ff1fe7d1f144f29aecfb46b478dfcde838318a39aa71a63a98e. 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/FRX612501115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b112d8abe54de911413d398680c9d7669ee3895c07df7ffdc2625f396aec004. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX612501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf879773dcf92703e8e65de901cea24de60dc4386114a031de6b61c2f94c76967. 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/FRX612501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76383aebcde7ca2393ea5417f9df33e8d531a9dc0788c81c33b50bc070078236. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX612501103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d253b03d24525b5d0bcd2056aa1e14620795021d2d1f22c5b9e4bda62a8ea. 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/FRX612501104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b41b4373cb6e9543ddfb52f856d1e5080d9c2d35c356e013b7a96498974df8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX612501105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9459cedb7a685fa97cae894c49ae74cbafdd52ceca39db9a93bcb0821eb64f. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/FRX612501106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b91ae09e9abf89b1fcc04378a66977c72d3a48e3500a7192d7b48e54edf601. 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/FRX612501107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa728e848e840f664bd3f30c048f493fe8d47f030809234cc0b457825a1f33b7e. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FRX612501108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24aa7126f3f0772355555ab173afbf8b21389d2969b2e281d0f43155dd743b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX612501109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bec13a228927d11651014cdfdeb4a3e583002183121531c3f1910f74b493ff. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX612501110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39112cb08d8ff1fe7d1f144f29aecfb46b478dfcde838318a39aa71a63a98e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX612501115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b9b840df0fbbbfd01cf757428cccca17f38363804212603114f03af3cbdb10. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRZ010000780.
Musique celtique: Envie de Bretagne, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b03eed392b107c8236a3bd8a9e95be33e4be2f84334a93a8ee6a85eb7029af4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRX611800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0a8a8339a7822c8da585bb7d09cc4d0e31334d953faa38d548aabf79a6e75. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX611400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd5e25908296accc55b9ea9b2b80b23a0e616617ce191820597c5e47c881413. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRX612200178.