Jean-Louis Matinier (born 1963 in Nevers, France) is a leading contemporary accordion player in the fields of jazz and world music. thumb|Matinier at the concert "Jeux Doubles" 15.12.2018 in Merzh
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 0xaefafe58fadba3f154af64cb26cf85ff13ae566bef2b7b467fabb3118e40e893. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48a59cf8-46b8-43e5-9a83-76de910bf2d4.json and https://artists.proofprofile.net/proofs/artist/48a59cf8-46b8-43e5-9a83-76de910bf2d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Qui Est Homo (From Pergolesi: Stabat Mater, Arranged By Jean-Louis Matinier & Marco Ambrosini)
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 0x007139b9181325864459bd47504b4be53ae3ba43a1b40e0069ed5560712ae203. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEB331334808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3110e03f220f551b776971bd255908d44921d327bd9d7e3123294fc4675720c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEB331861701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c8dcacb1d42558ff33b84ac2b48f2d82817b94dc127158d6bc2d63e27fdfb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEB331861704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99064536c22048baca51293fd54102dd489125b2b89a68a1433a72d6e2f907e6. 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/DEB331861706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde5ff931449a3404c6a46e69fee8c2cc760a94548ba20bfe3bca46ea6416494. 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/DEB331861708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a277a473cca56c2e0f5985f5d05280bed78781145b5a1629d780149e092e3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEB331861709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8f2ae3c333894a4b1b397c03dbb7dd55a8cff9094765a9e24179bdc6e6203e. 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/DEB331861711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b9f5852d50cf999f3c5ae932b94379790f600b3f977712d2a8fde243402ce6. 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/DEB330597912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf802cfe116e6f17bf95121c126e53725bd340efe4b398ca3e2a32042a05d6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEB330597903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9139a6db8c3868c547fdbc3175b72f674c076c061b0749798fb7b996eb1895. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEB330597901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1682a421340b4c812a75c4586a1ae654514b44631e6e7c58332c17ba1101494. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB330597902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17a38e715fc109c19219317cdffd8936c5c96a3f9c377151e748775502d55d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB330597907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe26ed4f53545202bae2777086a5b3ae8e90294b748b44a4266665ddb970a4f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB330597908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2177b3601c8d1ff3c0068f30594f217626daad43c1bd583bf59b1ec1642880d0. 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/DEB330597911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317da3ed04fd4cd3bf683db64cf3cffb555f6e6d684e9b0d85a9ec418c00dd1b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUAB01350006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe937b7cb0d3d0f5ed5e6c95d0b165da427884d1c9f9360948d147b89390ff43f. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/DEB330597904.
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 0x0fb757b57ad8cc0d037d1cf0d7a5a7cece65b9862036e97b172a2ebd416ce120. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEB330597905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d9eb76b09e1fd2c5f0f1e27c0fc76e2281855827fdbf933b111a8166f24f2e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB330597906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdcfa10931599f2ae0604f83c4009b5281cf04c71c36d8556622ecf042eed22. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB330597909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa982d8c2950da2684155de8eda92e6628de9b48e08472956fa777380643845bc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/AUAB01350001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295911cb56a9b8fd1a91bc681256306cbe45bdf6ad424eb412e8b668b6fc4fc7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/AUAB01350014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f9cd79333a892b6efdc524c8ee7e1f286de4df54cdc2c458a7f4f0d3466c6. 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/FRZ119602150.