Ruhla () is a town situated in the forest of Thuringia in the district of Wartburgkreis in Germany, immediately next to the Rennsteig. Thal and Kittelsthal are parts of the town. History Within the G
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 0x27901ac3cdc37eade261bf23f55f3f4628790099da8e9d43a7bcc3ac4ec63a58. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edcdf594-5e6c-48bf-ac21-9bf671309570.json and https://artists.proofprofile.net/proofs/artist/edcdf594-5e6c-48bf-ac21-9bf671309570.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).