The Chicks (formerly the Dixie Chicks) are an American country music band from Dallas, Texas. The band consists of Natalie Maines (lead vocals, guitar, bass guitar) and sisters Martie Maguire (vocals,
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 0xdd7a2e96f04f83740d8a084c8e9f9b1b8a9f8f0a6997e6f9f7119ca70e180ac2. Chain 2 (Bitcoin): anchored in block 953869 (2026-06-16T01:20:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/064d9ed2-7114-4631-b75b-3ebb460757ba.json and https://artists.proofprofile.net/proofs/artist/064d9ed2-7114-4631-b75b-3ebb460757ba.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.