Vula first appeared in Cape Town in December 1984. Distributed to beach bathers and the like, it quickly became one of the country's top, alternative publications, before disappearing sometime in 1987
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 0x6d1897aa9a886abd3b949c52fdb0c326ca984737ad68c6985aaa1e2a24005779. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f06d0586-b2a1-4ce5-a764-8f0cb083edd4.json and https://artists.proofprofile.net/proofs/artist/f06d0586-b2a1-4ce5-a764-8f0cb083edd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).