The Burns Sisters are an American folk music group from Ithaca, New York. The group has performed and recorded with various siblings, most recently consisting of sisters Marie and Annie. They have tou
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 0x007114b077040130c61e5f3ba1d35f153b5e45391b48cc7b251689ef1d9a8661. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b5ad8a7-9cf3-4be6-aac2-b67af53eb528.json and https://artists.proofprofile.net/proofs/artist/8b5ad8a7-9cf3-4be6-aac2-b67af53eb528.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).