Ruth Kobart (April 24, 1924 – December 14, 2002) was an American performer, whose six-decade career encompassed opera, Broadway musical theatre, regional theatre, films, and television. Life and care
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 0x22f82a9843c26e22422c4ff006a321ed7f39803a80b91f155cf6933185153dfb. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf04659d-8404-4d64-bc20-167b1b14a8ab.json and https://artists.proofprofile.net/proofs/artist/bf04659d-8404-4d64-bc20-167b1b14a8ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).