The Gersa is a right tributary of the river Someșul Mare in Romania. It discharges into the Someșul Mare in Rebrișoara.Gersa (jud. Bistrita Nasaud), e-calauza.ro Its length is and its basin size is .
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 0x1fb67a1aed4190806c4595307980dc9b4a4130549d9b8a201e079965807a51c5. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b64c818c-17bd-4dfb-bbaa-9ff588d0f74c.json and https://artists.proofprofile.net/proofs/artist/b64c818c-17bd-4dfb-bbaa-9ff588d0f74c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).