Brasse Vannie Kaap (BVK) was a hip-hop group from the Cape Flats in Cape Town, South Africa. They rapped predominantly in the Cape Flats dialect of Afrikaans. The original line-up included Deon Daniel
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 0xcbe7c2735be08bb71fb9520b4820837eee12b335b69188858ddd19979d96f5f9. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc587028-1219-459c-a863-67e6ab07ce12.json and https://artists.proofprofile.net/proofs/artist/cc587028-1219-459c-a863-67e6ab07ce12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).