Sedjem (sḏm) was an ancient Egyptian god who, along with Irer, join Hu and Sia as creative powers of the gods. Sedjem, which literally translates to "hearing," first appeared as a scribe for Thoth and
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 0xaca5d5e7dbd24615def26e9d71bf570b0c88340fba93646609aa8743e15d5025. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74e1223c-d502-4c37-954d-2b51432dc683.json and https://artists.proofprofile.net/proofs/artist/74e1223c-d502-4c37-954d-2b51432dc683.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).