Chaka may refer to: People Shaka (1787–1828), Zulu king Chaka (tagger) (born 1972), American graffiti artist Chaka Bey (died ), Turkish emir and adventurer Chaka of Bulgaria (died 1300), tsar of
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 0xcda9f19691ec7a27cb8c8002242208fc69c781371fb3a26269f9b3fc612e38b7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a0591a8-43cb-4850-ad26-b723ce46d7ab.json and https://artists.proofprofile.net/proofs/artist/6a0591a8-43cb-4850-ad26-b723ce46d7ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).