Marie Lang (8 March 1858 – 14 October 1934) was an Austrian feminist, theosophist and publisher. Born in 1858 in Vienna, Lang was raised in a liberal, upper-middle-class home. After divorcing her firs
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 0x4d174e8ce267e57c629f4d01db8c426ca9f96db63831809e1e826543223e07ba. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1659116a-2bf7-4c23-b74e-dd08a0224002.json and https://artists.proofprofile.net/proofs/artist/1659116a-2bf7-4c23-b74e-dd08a0224002.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).