Kashtin were a Canadian folk rock duo in the 1980s and 1990s, one of the most commercially successful and famous musical groups in First Nations history. Career The band was formed in 1984 by Claude
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 0xc3edaa532f08c5bfac9d8cff6b0fc346ccb2267ef76a53abe54b07a7195ef0eb. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2a27c52-3d85-485b-803b-072237793180.json and https://artists.proofprofile.net/proofs/artist/a2a27c52-3d85-485b-803b-072237793180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).