The Acheron ( or ; Acheron or Ἀχερούσιος Acherousios; Acherontas) is a river in the Epirus region of northwest Greece. In Greek mythology, Acheron is often depicted as the entrance to the Greek Und
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 0xabc94318a4b3bcf6d90cbc30d8e591699c09fe444c731d11727caf5848042751. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a21f33a-5c87-4e35-bc1f-c4ebabf54857.json and https://artists.proofprofile.net/proofs/artist/4a21f33a-5c87-4e35-bc1f-c4ebabf54857.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BEAT SAO TRÊN TRỜI (Acheron x OCG x HaKiet RMX)