thumb|Les Yeux Noirs in Stuttgart (2009) Les Yeux Noirs is the name of a French band combining elements of jazz manouche and other Romani music, Yiddish, and Klezmer music. The group was founded by tw
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 0x49a87a903162bbc83502ee2d66409dae6faab10ac682f213685285d6011f4f6d. 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/d60e261a-201f-456e-bdb0-4516a13c3dc3.json and https://artists.proofprofile.net/proofs/artist/d60e261a-201f-456e-bdb0-4516a13c3dc3.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 0x4c03b0eb0b50e738ef27c61f018ca4282f43f3204f24f1327fd3d902e5a6daf0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V89200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f4a9337653cc33f9cca152f14335f1189624bb83fee61ec9d0e43ebb58901c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR6V89200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f06128fc865fa3737afc0329e03262b938300d2845fc71c9e91d96dcce0909. 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/FR6V89200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caab05426fa68350c7e93d1df7f157ec014aa99fdfafd0eb32e02cbb024146e. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:08:56Z), 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/FR6V89200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2e1411b4c802e1db37cbae070bb2a39f66db73b07e9b9a0a07ea935591224. 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/FR6V89200054.
Slavanie: Slavonic, Tzigane & Yiddish Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d66b42f5badee48824774f27a01c581951881b774b308d826bf19a77ea335. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:04Z), 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/FR6V89400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c61a03560d4924d172e11c61ee8518a4152f7e0f71a47d80a916617868143fb. 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/FR6V89400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c88fe152768de65acd5e4ef8cdea137a09996c72d004e97447982f7707b968. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR6V89400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89832438e1df0b7709d2e244804cea04ee0db06bdfe86fdfdb027162943a947. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR6V89400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca0f50f6254b4c6de69e08a71f7ad8697c97b79b01c8765b9163db93fb2d851. 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/FRZ119700330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948cebf3ce098f06b503add3222361a7bb2fa76894a1649701daddefd3a99708. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/FRZ119700440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b69556e3fb97cea4b17d53c84a519035497a1fc3c983aaf38b3fc1ad1d4504e. 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/FRZ119900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0855a6fe131dfa334e4a9c1e586df4a1316b32e378305c5d4cf307f34e53993. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FRZ119900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd9a961078e4b06601f0f8349aa628d37f1872d872c5fbd8b300a378544fa9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:48Z), 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/FRZ119900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2ae2f7908fe1494f327755a0e1fe00c1cd0a0040180b6e1270bd26a4e39d12. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRZ119900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b976e030cf2771bc9721deed223ab6771653aba8d9c70ba25925cc1963cdbe9. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:42:41Z), 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/FR1P71001730.
tChorba (Anniversary 20th - 2024 Remastered version)
La maison monde (with Jocelyne Béroard, Jacob Desvarieux, Les Yeux Noirs & Zola Tempo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd966e044394f2fccc8ba2375ecab376f2eb714c99750d2d612efd2a545c661. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ081300203.