Nerva (XNV): how it works, supply and reviews

In short

Type: Privacy coin forked from Monero, with its own blockchain.
Maximum supply: About 18.44 million XNV of primary emission, plus a perpetual tail emission reached in early 2021.
Risks and caveats: Hard fork 14 is mandatory: nodes and wallets older than v0.4.0.0 stop working with the network after block 4,480,000.
Checked: 1 November 2026

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Key facts

Ticker: XNV
Official site: nerva.one

Key facts checked on 1 November 2026 against official sources.

What is Nerva

Nerva (XNV) is a privacy cryptocurrency forked from Monero that hides the sender, receiver and amount of every transaction by default. It uses a CPU-only proof-of-work algorithm (Cryptonight Adaptive) with no mining pools.

Network and consensus

Network and consensus — Nerva
Parameter	Details
Type	Privacy coin forked from Monero, with its own blockchain.
Consensus	Proof of work, CPU-only; no ASICs, GPU rigs or pools.
Mining	Anyone with a computer can mine; the docs call this a guiding principle of the project.
Hash algorithm	Cryptonight Adaptive; v0.4.0.0 introduces CryptoNight-Adaptive v8 at hard fork 14.
Block time	60 seconds.
Launched	Genesis block on 1 May 2018.
Privacy	Ring size 16 (up from 5) from hard fork 14, with CLSAG signatures and Bulletproofs+.
Upgrades	Hard forks ship as mandatory releases: v0.3.0.0 for hard fork 13 at block 4,320,000, then v0.4.0.0 for hard fork 14.
Hardware wallets	The docs describe a sideloaded Ledger app tested only on the Ledger Nano S with firmware 1.5.5; the v0.4.0.0 release notes say hardware wallets cannot sign HF14 transactions.
Hardware wallets from HF14	Hardware wallets cannot sign hard fork 14 transactions, because the Ledger protocol predates CLSAG.
Multisig	Creating new multisig wallets is disabled; existing multisig wallets can spend only until hard fork 14.

Supply and issuance

Supply and issuance — Nerva
Parameter	Details
Maximum supply	About 18.44 million XNV of primary emission, plus a perpetual tail emission reached in early 2021.
Issuance	Tail emission of 0.3 XNV per block, about 157,800 XNV a year (0.82% inflation as stated in the docs).
Initial distribution	1% premine (180,000 XNV); no ICO and no investor allocation.

What XNV is used for

XNV is a payment coin for fast, low-fee private transfers.
XNV is paid to CPU miners as the block reward.
Developers can integrate XNV payments through the project's APIs, including as an in-game currency.

Who develops and governs Nerva

Governance: Community-driven open-source project with no company and no VC roadmap.
Founders: The original creator received the 1% premine and left the project in 2021.
Open source: Code is published by the Nerva Project under GPL-2.0-or-later.
Developer: Core software releases are published on GitHub (nerva-project/nerva).

History

History — Nerva
Date	Event
1 May 2018	Nerva's genesis block is mined.
2021	Primary emission of about 18.44 million XNV ends and tail emission begins (early 2021).
2021	Nerva services move to the nerva.one domain (Q4 2021).
30 January 2026	XNV is listed on the NonKyc exchange after 2025 delistings from XeggeX and TradeOgre.
21 July 2026	Hard fork 13 activates at block 4,320,000 on 21 July 2026, moving the network to CryptoNight-Adaptive v6.
25 October 2026	v0.4.0.0 'Legacy Restored' is released for hard fork 14 at block 4,480,000 (about 10 November 2026).

Security and audits

Nerva says CPU-only, pool-free mining makes every miner run a full node, which it presents as resistance to 51% attacks.
v0.4.0.0 switches transactions to CLSAG signatures and Bulletproofs+ and raises the ring size to 16.
Nerva's 26 October 2026 post on nerva.one says the v0.4.0.0 release updates Unbound to 1.26.1, which fixes critical DNSSEC vulnerabilities.
Nerva's docs say its multisig code is an older, unaudited variant, so creating new multisig wallets has been disabled.

Security incidents

No security incident is recorded in the sources checked on 1 November 2026 (the company’s own channels and incident databases): defillama.com/hacks, hacked.slowmist.io, rekt.news/leaderboard, nerva.one, github.com/nerva-project/nerva/releases, nerva.one/nerva-v0-4-0-0-legacy-restored-hard-fo

Risks and caveats

Hard fork 14 is mandatory: nodes and wallets older than v0.4.0.0 stop working with the network after block 4,480,000.
Existing multisig wallets cannot spend after hard fork 14; Nerva tells holders to move funds out before block 4,480,000.
Ledger hardware wallets cannot sign hard fork 14 transactions.
There is no company behind Nerva; development depends on volunteers after the original creator left in 2021.
Nerva was delisted from XeggeX and TradeOgre in 2025 and now trades on a few small exchanges.
Supply is not capped: a tail emission of 0.3 XNV per block continues indefinitely.

Official links

Website: nerva.one
Docs: docs.nerva.one
Source code: github.com/nerva-project/nerva
Block explorer: explorer.nerva.one
Node map: map.nerva.one

Questions and answers

What is Nerva (XNV)?

Nerva is a privacy coin forked from Monero that hides the sender, receiver and amount of every transaction by default and is mined only with CPUs.

Can Nerva be mined with a GPU or in a pool?

No. Nerva's Cryptonight Adaptive proof of work is CPU-only and has no pool support; each miner mines solo.

What is the supply of XNV?

About 18.44 million XNV were mined by early 2021; since then a tail emission of 0.3 XNV per block adds about 157,800 XNV a year.

Who created Nerva?

Nerva launched in May 2018 with a 1% premine to its creator, who left in 2021; it is now run by community volunteers.

Sources

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Page updated: 2026-11-01