Samo ( – ) was the founder and sole ruler of the first recorded unified tribal polity of Slavs, later known as Samo's realm, ruling from 623 until his death in 658. According to Fredegar—the earliest
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 0x00b215e222ebfe60dd17e0d898ed2fbed7a5a05872e8b1c63447540d96217541. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/914158a8-8adf-4cd0-a461-ef958f803d4c.json and https://artists.proofprofile.net/proofs/artist/914158a8-8adf-4cd0-a461-ef958f803d4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).