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 0x86ca21b34372772c45dbc94158a40297cec1b19afe08e73856d6761ed9282b62. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b605c167-904f-45ad-8a20-b6ad4d7106ff.json and https://artists.proofprofile.net/proofs/artist/b605c167-904f-45ad-8a20-b6ad4d7106ff.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 0x81e979f210c967520cde5fd1bca0033dfcbc9ac736352e8980af2ad05aff07b1. 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/CAJ221600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c780f4acba91aaaadf41d1d487bbef01943d821b62296883b43a2b714cba609. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:31:04Z), 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/DEA890900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae980184f998af01f12f30d37b95ac4b12e00a4dcbde5df53cde9d854d93c18. 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/CADC41512316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e07679b03cb754336ae3c730213f83025854921fbee7c43b050525fee708e7. 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/FRP1X1443850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed46c2a98d81750b4f571b6311bf4023ca1c3a61efed5894e59fb788cb2855c4. 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/FR9W11420260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fd87357226af2bb465c1c4d2a8d49d262f95271d2a253f227fd959f616686f. 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/FR2HR1100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945d033fb94de703d51d87e99a699f40c7525926cb9c59d7188d863a417d6fd2. 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/GBCWU0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a794122bbd04ef13b751d4a247baee574012e07977f7f8427afba0e7a398c9. 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/USBCS0500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0de4f4bef171004f87f52785644299fedd4c5352c96dada432bff4824372a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA890300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99034836661aff59170b4631f53d6b26dddd6c82736bedba097f2762ca7bf579. 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/DEA890400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fad99222baf4de592a9cc613d87ff0038e686f0dc586984837e18f01cbf7313. 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/US4A70400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464651d0d85b0fac1f2dc1edc546a201272a2624c6f2b87c96209ea8b643b3dc. 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/FR8E71401440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f0ebd87f9e302a38c964ac363ce482eec7e362b1b537d8a23ddebc3a9f098. 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/FRPBM1300800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c2cec56df5722af997fb753207cdb7a39bbdff1e2065756124433a7821e9f. 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/FRYFT1007660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65efd25b3876d9e2aee3f778ac84602702b055b880e5a30ee0db739969979a26. 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/DKBDB1401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075f4440be7306961e49f2e187ed235a1d585b2f2138d75220cfc14338ef1c19. 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/NOLEA9841020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c932a9e572a63fb4e85822b042d2fda6e80e93f187368ef55d8e40808e99189. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR0FA1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0177284cff056ab9e153bb51a806ac1b58f5aee3649568ea290ca86497223468. 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/CADC41512312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5e2f46c6d4d57bebc25ca10bd97ee1b1959f77adf1827d9914a9a1646665d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W10401533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c26f638e6afbfe16b63c900108d11e774becf5ea0bf7130f9f332b2d1236157. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR14F9402150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0090f75399fe17b5b3eb95cd1a7f50fcb50690bd2adf0d8f153fa2e6bb763f3. 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/FRYFT1007631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90d823b0a67608ee162e71d3145d487be552cb403d12c16063d5e0ec5e10d35. 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/FRZEH0000070.
Valse de Melody / Je t’aime moi non plus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8272fc6ab62e5fe21aa53fc2008855592b49cd968bb4126448804f714a599cea. 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/FR47Q0603720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6563c44bea8776d549703ac40a86dd451c826e78ed76e17faa15c18318bdce. 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/FR9W11011918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf236a6240fef01b75fce2c94763ae8e7e918b1e6be353c6c918d035e665ff568. 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/FR0LU0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d59fe372061d46755fa5aa3f24c7c4f8f2c280388636386fafb82b57372e3f0. 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/FRZEH0000060.
L'herbe tendre (feat. Hildegarde Wanslawe & Remi Sciuto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caad0df0fa6735a2f073562a73ab9d7f497fd8e2430ef9b6d320433219031c2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR0FA1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579ec6d243c6fa3923efca8c97686e5805952fcd021ec65346332d8503eaddbd. 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/FR9W12031411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6119ba840a1941d6571bfc35a997d9ad6c3a2e3bf330804d52bc2a144d7e5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR9W12031406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c68cc75db7a275ad4b0d0e5444efe2e37af08cbf401374b78767d93bada69a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR9W12031407.