Frans Zimmer (born 5 June 1985), better known by his stage name Alle Farben (meaning All Colors in German) is a German DJ and producer. Since 2014 Zimmer is signed to the record label Guesstimate/b1 R
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 0x7f945bc8ad8345db84d77579ea3ade12e2df2a052154e7daf3a6109a2074a11f. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02ca4128-94e6-4512-90d5-7d23098d4fa7.json and https://artists.proofprofile.net/proofs/artist/02ca4128-94e6-4512-90d5-7d23098d4fa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).