Emmanuel Kwesi Danso Arthur (born 18 December 1999), known professionally as Kwesi Arthur, is a Ghanaian rapper, singer and songwriter from Tema. He rose to fame in 2017 with the hit single "Grind Da
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e40957750684ae8cd3ee7f71e0c9d0763cb5bdc7f289660bf98115a3d5e9e. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fda9a4de-71f2-41cf-a2a0-eee35c19b19a.json and https://artists.proofprofile.net/proofs/artist/fda9a4de-71f2-41cf-a2a0-eee35c19b19a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).