Jean Marcel Leroy (20 January 1929 – 4 November 2016), better known as Jean-Jacques Perrey (), was a French electronic music performer, composer, producer, and promoter. He is considered a pioneer of
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 0x5c9e4ee8c65cde1e950e4601beda231bbe822c8d555153a9566adabca4e70239. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d37ffbb2-5c9e-4502-9663-299a148f6199.json and https://artists.proofprofile.net/proofs/artist/d37ffbb2-5c9e-4502-9663-299a148f6199.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 0x5502645b9ada48b7c8afedcc626bf7bfc48deaeb42d3bb03183b42e411221eef. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:15Z), 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/USVG29652747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cdafbae37e3d81aafeb8b9dd5878da4a65d3094b396af958d0ff8e23308eb9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USVG29652749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc353d39d63992932ab0321deb4c449380c00c6169c7cf9d7b1d83854c1e9e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USVG29652751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e36734605bb39821d1f31cbec1660394964ac28c9e60c60f7774d66eafa784. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USVG29652752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac032f411fcd16e5d341c69966fdc49246b79c0166e31823f7303e219fe59a2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:25:36Z), 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/USVG29652753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1588cb440f351a4f32c77384c7d3295eb9480d1edfc80209a23a16989c641e8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:32Z), 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/USVG29652756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bb97ffc01a4822d9d1a0d3da1e9fc8a5eb9d46320266f2386a6bd18b185815. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USVG29652757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041c2b5170d576b46e62638a2faa219c2cad6d8d54094b70858a64e046b5251e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USVG29652833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d61eb7d740d41dcf15bcd279ea5d6879aa62f325b57571c1e8a3c844562df57. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:43Z), 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/USVG29652835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1d16ea66954730dfb9734ddc105a65bdc85dc1c5647097efa5b7bf267160dc. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USVG29652836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f127545e785895600cd08157da1810f16528d822a68654725f2ee80bc90da1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USVG29652837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519f1be083310cb773c2aac588af7ae4b39be7b7a04e9d9fb6e8b94789944f37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USVG29652838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811aa1ab71371a1c71897ab743e3cfdfe13fc60ef98eadcc8e97e6848491a8ae. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:54:45Z), 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/USVG29652840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1795042192fef3d59907feed2f2fa91648a6779733d6103a764d0060b992b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USVG29652842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccea876641f165d956bf9af9974721a80c4bff45392fee9b80b302399739e1fd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USVG29603687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25a4d76973f16154ac3b55caab5e6cc3519c5b7479e2d3d974716a0181d95f0. 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/USVG29652843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ed45115d0a4fd8ef4af3067b91cc67378309b1710105cc7a91d4084aed6b9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR19F7015530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a94ae9a4ee6eb6db1cd3db3241e7a695037e2e81e745f4f13bef25937a296. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:36:42Z), 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/FR19F7015540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397e708becbf6aaa52c3351415cab0cb32d4358c63079c251d7a2328ff453a3d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR19F7015480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d42bd6a5e4e987721fd2b6f312c38bb05915359d21d17ea93ddd7d74dfc204. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USOEG0683802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725064e40978405aceffc6afc070a32600a387d642373445cefe16ba8a53fd74. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:17:05Z), 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/USOEG0683807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8958df362fc526814934ec56573d05e67830e86268a6e790d6d89c7c6e219488. 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/USOEG0683809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467364d48b46f54d7e86bf02a0afa693b604af10781c772f8e53e8c0331e1fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USOEG0683811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40dcc7f41663a7e06926137773b02c3e2339f5c3346c0a028c461f77ee8673b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBDRC0706402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb5bd5df66ea35b2b774be98b5fb1fb58a43067540c7f4243223d1543718880. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBDRC0706411.
Musique Electronique Du Cosmos (Electronic Music from Outer Space)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237ab23d89fe75df3ce72d60025a701df550bcf36d6c388ad5c8044b97d8ddd8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCXG2000257.
Berceuse Pour Un Bébé Robot - Lullaby For A Baby Robot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01532beb92255090eca76969c1cadd14f5572a689f05bf79b7c107f5b98dedfb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCXG2000258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a4a9f7562afac6dc170e81ca8a5d54b555230f6c712862dd45310c5652c30. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USCXG2000259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e992ee486cce76ec02df1a445ed9fab132204cba78e3a667f441caa559ef78. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCXG2000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565a1d72e2556411dbcc08ccaac40dc6bbd436d954cd00c6599dda4b7d90974. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPF311400002.
French Rare Groove : Rare Funky Songs From France
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195bf32114d9edc255b03e1a718cb6269a662aed6ad144a711d670439f4119ff. 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/USVG29684467.
Baroque Hoedown (in the stlye of Vivaldi)
Best Of Los Angeles Guitar Quartet (The)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57b03112b3eb7e19c760a8fed52ac4da11fe94aa5997ee44b4c8a92101f4454. 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/USASX0660720.
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