Tina Marie Cross (born 27 January 1959) is a New Zealand singer. She sang the winning entry in the 1979 Pacific Song Contest, and was the lead vocalist of synthpop band, Koo De Tah, whose single "Too
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 0x44f0d37370c366f7185e59ce2d0ba8e6134fc2678cef070cbb468e36730ceb85. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d6b099e-8652-4f33-843f-3d8d77e56c4a.json and https://artists.proofprofile.net/proofs/artist/7d6b099e-8652-4f33-843f-3d8d77e56c4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).