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 0x927d34614c12aff20007a3013f95875b28e83e49e936c77f846c51ab64abf51e. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e91ae61-527a-4734-b219-c0ad3412f746.json and https://artists.proofprofile.net/proofs/artist/9e91ae61-527a-4734-b219-c0ad3412f746.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 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 0x15650d061b85f4a2e242c31af6f8102c37611689b44f0037d03f51c6ed695aef. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGJ1602721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd474dbeaf055c03ba1cf8a56dd93ca9c9e5b9bf6c4e95d3e8c9e424d0832a7. 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/USCGJ1602722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c452cb4444dd0a4adfbd4f5ae54e02f5594719a22c0d9039a7f40092d5c7de4. 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/USCGJ1602723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9e851788dd5594c59128bf913e96278e72674a3528dd0868bfdb70264e1655. 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/USCGJ1602724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0ef9a1bc4098b4fcabd4b9036a5e30a7cbface1c3208761c9fe01e2f4b6bd9. 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/USCGJ1602725.
Intouchables (feat. Milk Coffee & Sugar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691cf7a49c0282c8f2f50bac0963b90b344513b11dd283388d4e56bde90083d4. 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/USCGJ1602726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf36d3af90cb40dd452a402d420c32179df6b15def83058fbb138942a31d2a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USCGJ1602727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06583f7af7d5199abe760d6001935079c4301aff99ff9348491482610dc8c885. 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/USCGJ1602728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569744fb43c763f12bebabf63254fb2842fa996d68e1c335136249b7d79db44. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGJ1602729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543688231883af0476f1a49b19d14f53118bd2032048a423e91cf402bc4aeffd. 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/USCGJ1602730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc2345e12d4114d869fbb63534c3d8197aea83bd4c63ead41e4dbf62ddbc59. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USCGJ1602731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5ea72c66343194af075b251dadc0edb697c8960ae5cd5f3997cd6ee8584c26. 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/USCGJ1602732.
Pendant que le globe tourne (feat. Lex de Kalhex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a1b4aa96e5b715baf40ee813c4a7d4b84f80f3f15476406d1244ea86fdb558. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGJ1602733.