Cubworld (real name: Jake Kongaika) is a Hawaiian singer-songwriter and one of the first three artists to release their CD on the music website Sellaband with the raised US$50,000.iht.com : Companies
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 0x17f712e5ba0a65c1ee4ca5466d5013092d29d53ad711d318c55dfe96711fe688. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e7c00aa-d7f2-4779-a428-86ad1cf10e0c.json and https://artists.proofprofile.net/proofs/artist/8e7c00aa-d7f2-4779-a428-86ad1cf10e0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).