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 0xd0a70fd049f0bd14c66fbdd5dd06ef09d2d4e2473cb79d6ae6b00258774eaf40. 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/7d684af1-de28-4d7c-b5d2-30edba79245f.json and https://artists.proofprofile.net/proofs/artist/7d684af1-de28-4d7c-b5d2-30edba79245f.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 0x5bffe4b81901d80ebb84a13a54d96d47f8796d0fd26dc4ad6356c9be805a6181. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/SEYOK1318720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bf8cbbdd60ba81afb13496591eafb6cad1f2598b800bcaff32bdd2efce1170. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/FI66M1100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec8667e688f6f41f2186cad163d044d393a34d654c19c3bb757923700659c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FI66M1100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa847bf96923934aed0f7ce12db107bb9401ed6ce51aa2c208b659ad0a83b8b07. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FI66M1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac05191741d3b6979d10f835fe7c1e3d34046339a3046bebe14230956ed451fe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI66M1100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4372e36ec7c6370b7c981d0e0f5a339a7e2de384ddb329ebdc57e3f056fea941. 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/FI66M1100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68ab283cd66193269c2b66a4549adf2bd9e57810a6365a76889e63efb9f763. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FI66M1100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c8472cc76b61971c6766c17b8f2571d9637410199a5a02dc1e1a8bc55a79df. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FI66M1100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f01c0d263e6772c949d3cd75d9fa58ff5a705891c2cffae1bae2c94992c731. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FI66M1100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2982f642e0cbf63704f105a4c2c32e2ee9ec6ceb6193f73214ca98deedfe8592. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FI66M1100335.
Vähän liian valmiina (feat. Raakasaga, Jodarok, DJ Massimo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fbb02687d0a4999d284b89bb2dcc6f8a363f876ea5224d80714785091de325. 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/FIWMA2000319.