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 0xabdd4c990382b9f5f5733589c777a661e3695188503859c76b6f6cbb90b80f3c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c32e99e2-02a8-4b52-b96a-63476a1c36a3.json and https://artists.proofprofile.net/proofs/artist/c32e99e2-02a8-4b52-b96a-63476a1c36a3.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 0x1c4ee4b052830a11eb2a680ccb9f834e006d6d9bae8f6bae69dba98706cb42bc. 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/CAJ221600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7325a79361f2e692df5f2569d69f50abeb46b15b7c20b2db351385ec65632aac. 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/USBCS0500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deeabf7f67b750f612314baf9683a589e015921d1b2b5b3334432fabf270896. 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/FR4EO1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0d028fd254e7186d621f7acfe0c43a59cae94eac81653ee11d752951e9e63a. 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/DEA891300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f59e667d9a7b735c8a443bbcec9e77a36a1130792b711ebc3dbbc0be39bf780. 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/FR1F39500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1174fd3c2ef9c5f94dd637bd93fec6e6bf4effd19ba51fda5331df1b3adbe3c0. 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/FR14F9300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660658cc829f2a10ba89eff5cbaa02d42e064e63132dae67ac3c5839a839da88. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR8E71401450.
Some of My Best Friends Are the Blues (feat. Bireli Lagrene)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54581297d1880de7f20f860315d4708e06f910507a194c7be593edbc5d852fef. 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/FR71P0400120.
Vocal'isles (Tony Chasseur présente chansons et voix créoles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec29268a3e02fc085e610e1be90d9f31a3a0c26aaa7ad82f275bc30ef3baa07. 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/FR6V82396400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d968a3dd638466d22a432d28fc6713fc55fc0f7ee6f6295620eed90243d973. 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/FR59R1715675.
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 0x7c851330112902bfc81c7863dcbb65fd42465a6134d6dcec6ebe656ff094b6de. 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/FR9W11717849.