Security Audit: BitcoinZ Supply Integrity Verified
An independent security review of the BitcoinZ full node — the software that enforces the network’s rules — has found no way to counterfeit or inflate BitcoinZ. The coin’s supply integrity holds.
Why we checked
A privacy-capable coin lives or dies by one promise: that coins cannot be secretly created out of nothing. That promise has been broken before. Zcash, the technology BitcoinZ is built on, once shipped a cryptographic flaw that could have allowed the undetectable counterfeiting of shielded coins. It sat unnoticed for around two years before being responsibly fixed and publicly disclosed in 2019. As recently as 2026, a separate soundness bug appeared in Zcash’s newer Orchard system.
BitcoinZ shares that heritage — so rather than assume we were unaffected, we set out to verify it, directly in the code.
What the review found
- No inflation, counterfeiting, or double-spend bug in the shielded (private) transaction system, or anywhere else examined.
- BitcoinZ verifies private transactions against the original, integrity-checked Zcash cryptographic parameters — so the class of deep bug behind both the 2018 and 2026 incidents cannot have been introduced in BitcoinZ.
- The 2018 counterfeiting fix is in place, and a live supply “turnstile” actively rejects any block that would imply impossible — that is, counterfeit — balances.
The review was a focused, four-pass examination of value conservation, double-spend prevention, supply accounting, and zero-knowledge proof verification.
Read the full Security Audit → — a plain-language summary plus the complete technical report for developers.