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 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 0x839bd23bc0317413d3251c9c429758a3b28b476a843af2b82c50929da56cfd48. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df03f21f-a041-4b82-a975-2c97767f29c8.json and https://artists.proofprofile.net/proofs/artist/df03f21f-a041-4b82-a975-2c97767f29c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vakkenvullen (Afro Bootleg Mix) [feat. Emile Laurent & Exclu]
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 0xbb3244ded0e491437e3932915e1ff0cfab4a8c56c56a018e08f52e6f44704411. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCACQ1699322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ab6dc06aaefafaa66d390892c72d95c2717b8cf432edda314779b6d81f5242. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NLK2U1900293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971151046184b67a9d874da15e2f595fe2f40d1115cd1851ca7acc99af605be2. 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/TCACY1780163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c539a16935db438525731048a8bf9156816a274c6e631967ac92f2bd0c00d15. 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/TCACY1780162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951e5963a364b04fa91676eb1cd0f5f2a3438b629e1bec57cff9271eb4c2e018. 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/TCACW1730954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9944a19c11753604f5d666ac13c535cd40719c64fe9588dfca11ef448e0ed0. 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/TCACY1797886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f287ea69696e155a30148c36261e240f6e2c399c4241b6b2dc8d560f100aa43. 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/TCACT1639827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d79caaabc0c523fc2e22d30677382ed764f1dcadbbe52e0b24d5d40cff547e. 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/TCACY1797848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3a5a4970ab92f7399475f1c076becfd8f7269a01e1c3620a788fd8ff747de. 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/TCACY1791747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357e41f1e8884fb771b4eb4820f951b80676f7bb5bb496dd5817647c6a4ccd9d. 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/TCACW1730950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56cd9e365cdde1f276e012d53ea5e1159ff712abf8bd14967d3aca170c9f0e5. 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/TCACZ1740049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf44ff49482e9a9f068abb3d9a286685076395c5198b5222be2ea556863353. 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/TCACY1780158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8cb3b9e0592b184bb7d7f6c0fda5e1fb722adf1dc35ceb8ef7001878bd9f79. 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/TCACZ1740118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6207776dca17e01542f1c6de288e4ac8c4bf9ef80e6db98498d0180ab0ef0b91. 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/TCACY1780149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa37859bfe42fb91bc2f8b743210a009b8a99b70a661da76742332c9461c98. 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/TCACY1780143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5b0d01797efbb44a82d08271d1eb0e993c4ed3a6d002a6b74a32038995bc0e. 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/TCACW1730958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99654b4ffffb68162b83e9799487a6ea9021feebc789d1109b311c881e3aaa02. 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/TCACY1797881.
Laat in De Nacht (feat. Eves Laurent, Geechi & Spens)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2e00d05c7fd4912ed4fc670ef1c87c6fb62bc798163adf3af0bb5b6f9fe355. 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/TCACY1798086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3ef681affe9e3c5c66c848483cfbbe9ef3a0041ae72fb3c16a8af30cfe4072. 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/TCACY1791738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a40b16f9e55f69d3677482fa0dfe936d0441bdb93975405beeb62512cd2977d. 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/TCACY1797901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf59506e936efa6e3ba26f5f8746c4d64ee7598fb9ea4a6c30f66cfbb5ae3699. 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/TCACW1730955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e79840ab0159d0c1e305618011e74ebb333d0c758879965ed2044077cfecb30. 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/TCADY1816752.