Staub (engl. dust, German and Jewish (Ashkenazic): from Middle High German stoup German Staub "dust" a nickname for a miller) is a German-language surname. Notable people with the surname include: Ch
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 0xec8336b94aa4e11207d39da2afd4ae832d600d9193d137739b6b7a94d58ae59c. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef70d627-9644-4db2-acd5-569a381c60ff.json and https://artists.proofprofile.net/proofs/artist/ef70d627-9644-4db2-acd5-569a381c60ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).