Afrifa is an Akan surname, and may refer to: Akwasi Afrifa (1936–1979), Akan-Ghanaian brigadier, soldier, farmer, king, politician Christine Afrifa, First Lady of Ghana Elvis Afrifa (born 1997), Dutc
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 0x3ca44d4d6139eaa2cde2674a3f9ebde8e2add1934fcfe5e69f9fb725c9509a8a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c72e3c47-96ef-4282-a7c0-a509dd67a8f8.json and https://artists.proofprofile.net/proofs/artist/c72e3c47-96ef-4282-a7c0-a509dd67a8f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).