Karpe (previously known as Karpe Diem between 2000 and 2018) is a Norwegian rap group from Oslo, consisting of Magdi Omar Ytreeide Abdelmaguid (b. 1984) and Chirag Rashmikant Patel (b. 1984). Biogra
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 0x3c5e6482f31c6e915daa0a30427fe9ecbf6e201ec868a96f76fb2dfbe105819a. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/197765b1-a0c4-46cc-a801-90933e1ac1c1.json and https://artists.proofprofile.net/proofs/artist/197765b1-a0c4-46cc-a801-90933e1ac1c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).