Marc Schneider (born 1980), known professionally as Manny Marc, is a German rapper and DJ. He is the DJ of the South Berlin rap group Bass Crew,radio.aol.de Frauenarzt und Manny Marc which consists o
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 0x2d9d8dfc7d77c520fd253754cce62c7f828dda0020c14fcef72ed5c12a3e6858. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7471252-64d6-4378-9211-33702c2b96f5.json and https://artists.proofprofile.net/proofs/artist/e7471252-64d6-4378-9211-33702c2b96f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).