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 0x2f662fc5fa965479ab1867aee6d9bad83272a5c267dbb073488ed5f0292f95b0. 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/8ee200b7-71be-4418-96ec-e579dcf915a5.json and https://artists.proofprofile.net/proofs/artist/8ee200b7-71be-4418-96ec-e579dcf915a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fireflies (Crystal Rock & Marc Kiss Edit)
Fireflies - Crystal Rock & Marc Kiss Edit
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 0x71ea85f64c9bbf41a3d554ff7a0650af5f98d1e56ec109d5c4af52d8f444a58f. 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/DEMA61903452.
Fireflies - Crystal Rock & Marc Kiss Extended Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182d48aa3244db2c22fcbf5ca1500aec5337b7386c336b5410a9914cd5edd18c. 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/DEMA61903453.
Dein Lied (Crystal Rock & Marc Kiss Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd221d13fb67f510779c3235c10b750ab32d8a0dacba3aab438eacf7ef88bd6bd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DET191508299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef91d3963f8bfc516d5bef902e1ee359b182d35f88b823c1cbf193718a892fe. 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/DEMA61903252.
Andrew Spencer Presents My Favorite Mental Madness Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb0f0231ea3c37cf46b17b4b387def267f4371bbafe395eb86d77d69dba42f1. 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/DET191508357.
Spuren der Liebe - Marc Kiss & Crystal Rock Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f65dd0e11e3d53e8af356d645384fe969d01e935c3b79bacb2c150f16d2bf3f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEUM72200624.