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 0x6913a342a5ebd9dd9c139ab90a32319e6074e1ce892fb4a77303e43844aff6e1. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bc9efb0-a34b-4b48-8b68-7252a5605892.json and https://artists.proofprofile.net/proofs/artist/0bc9efb0-a34b-4b48-8b68-7252a5605892.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frühling 2009 - Die (Party-) Überflieger
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 0x54a8d666df19c2baf281ee7ce44c68ce84da3b836a6f9d8f8c8515c159034f0e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:51Z), 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/DEHT40900204.
Joana ( (Du Geile Sau) Mega-Party-Mix 2009)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b2aa27945cfc3dd4c23073785e56c460d81293381a61017facb2d50c259b7d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:50:36Z), 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/DEHT40900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d79661e8be56f0a0fe7b08c3dced119ab9a2b4e530fb411abf789b1d8a1781. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEHT40900211.
Frühling 2010 - Die (Party-) Überflieger