Tob was the name of a place in Transjordan, mentioned in the Hebrew Bible. Hebrew Bible Jephthah flees from his brothers to the "land of Tob". In Tob, Jephtha gatheres some men until his brothers wa
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 0xd27a2d244f6b4933f0a81f8c2e7d9ab2ffc3f7ddf0d399b55cb86658603df4c9. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f624402-c7ed-4238-a82b-9a27e7d18faa.json and https://artists.proofprofile.net/proofs/artist/7f624402-c7ed-4238-a82b-9a27e7d18faa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).