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 0xdb273a9ef3d3d3e3699c45df7e6f2354a2d4b7f8520fc69efe04d16f5d9f1d48. 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/0727a85b-9e0b-42e9-9a91-2e129ab1675c.json and https://artists.proofprofile.net/proofs/artist/0727a85b-9e0b-42e9-9a91-2e129ab1675c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hey, Wir Woll´n Die Eisbären Seh´n (Remixe 2008)
Hey, Wir Woll´n Die Eisbären Seh´n - Villa Mix
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 0x93d182c3c8b9ccd9e8668774ac35cda05b0c96fb5808b439e07817f629f37285. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEN950902593.
Blau von den Bergen kommen wir (ja ja jippi jippi yeah)
Hey, Wir Woll´n Die Eisbären Seh´n - Full Gainer Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd63b181d2cfbf6db9d61d61932fd4044ca2782839ccb6592d951df9b2a68f. 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/DEN950702111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd63b181d2cfbf6db9d61d61932fd4044ca2782839ccb6592d951df9b2a68f. 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/DEN950702111.
Da hilft nur eins (Das müssen wir durchsteh'n)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fedc9d14c2a894423f97ed738dde68a5e1797ea52731fd3814352228373349. 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/DEZ602006140.