Via Network (prev. Viacoin)

Bitcoin-anchored zkEVM execution layer with validity-proven state transitions

[Via Network (prev. Viacoin) @buildonvia]

Matter Labs recently announced that ZKsync EraVM is being retired, and its legacy execution environment is entering end-of-life

Via v2 (prev known as Viacoin), running on a public testnet, is built on ZKsync Era

Its successor, ZKsync OS, introduces a fundamentally different architecture

A new Rust-based state-transition implementation, compiled for native execution in the sequencer & RISC-V execution for zero-knowledge proving through “Airbender”

For additional context, a Code4rena security audit conducted in 2023 and published in 2024 identified 6 high-severity vulnerabilities in ZKsync Era. More recently, ZKsync's Security Council disclosed 5 preventative security upgrades in 2026 that address further vulnerabilities involving circuit soundness, cryptographic weaknesses & VM behavior.

These findings reinforce the importance of maintaining a secure, up-to-date execution and proving stack.

ZKsync's successor, ZKsync OS, introduces a fundamentally different architecture: a new Rust-based state-transition implementation targeting native execution and RISC-V proving through Airbender

With upstream (zksync) development moving to this new architecture, Via will (or rather has to) adopt ZKsync OS

This is important given the rapid advances in AI-assisted vulnerability discovery. As vulnerability discovery and exploitation become increasingly automated, maintaining an aging, increasingly unsupported execution and proving stack carries security risks

I don't consider taking on that long-term responsibility a sensible option, especially for software intended to secure user funds.

This is not a straightforward version upgrade. Large parts of Via's current implementation will need to be replaced or adapted, particularly where our Bitcoin settlement, data availability, and proving infrastructure interact with the execution layer

This will require substantial engineering effort

The goal is not only to migrate Via to ZKsync OS, but also to establish a more maintainable architecture and a sustainable process for staying in sync with upstream going forward

Consider this announcement positive, as Via inherits ZKsync OS newly improved architecture

[Via Network (prev. Viacoin) @buildonvia]

External nodes on Via were syncing Bitcoin settlement but not showing it as a result, not on the block explorer either

Bugs fixed: they now report commit, proof and accepted execution per batch, with the batch's own timestamp, matching the main node

[Romano @RNR_0]

@buildonvia While in there, I found a config "checkpoint" that unintentionally disabled header pruning

Okay fine, GPT 6 Astra spotted it

Headers piled up at 0.7 GiB/day
until disk space ran out

Fixed now

[Via Network (prev. Viacoin) @buildonvia]

Migrated Via testnet DA to Celestia Mocha-5 this weekend. Mocha-4 is being retired

Mocha-5 starts from genesis, meaning it's a fresh light node datastore

[Via Network (prev. Viacoin) @buildonvia]

Experimenting with publishing updates automatically. Not ideal for the public compared to full effort posts

Better these tweets than none at all? Perhaps

[Via Network (prev. Viacoin) @buildonvia]

Infrastructure update:

NixOS host health checks now report failure whenever recovery is requested, including when recovery scheduling fails. Operators receive a clear signal that the host remains unhealthy.

[Via Network (prev. Viacoin) @buildonvia]

Infrastructure update:

Grafana monitoring now also checks Bitcoin deposits, withdrawals, bridge coverage, and rollup progress, instead of just service health

Allowing, in the future, for ai agents to monitor the chain

[Via Network (prev. Viacoin) @buildonvia]

Infrastructure update:

Unused GCP load balancers that served downloads for an already-retired external node were removed, reducing recurring cloud costs. Via still publishes database dumps and state snapshots for node bootstrap and recovery.

[Via Network (prev. Viacoin) @buildonvia]

For getting Ethereum Sepolia (Testnet) ETH to test: https://t.co/hPvRid7ihG

For testnet USDC on Ethereum testnet: https://t.co/ukoaJYfqAS

[Via Network (prev. Viacoin) @buildonvia]

New version of our bridge released

- Code has been refactored and improved for reliable wallet network switching using https://t.co/Al0d503pNa library

Bridge native BTC to Via Testnet

Bridge USDC from Ethereum to Via Testnet

https://t.co/lEl6UWtCSB

[AXØň @SokotoB]

VIA NETWORK---Where Bitcoin strength meet Defi Genius .

Forget choosing between security and innovation ,now you can have both!!

Introducing to you all @buildonvia

VIA Network isn’t just another layer ,it’s a sovereign frontier. A zkEVM rollup anchored directly into Bitcoin’s unbreakable security, fused with the full power of Ethereum’s smart contracts. This is where the world’s hardest money meets the world’s most dynamic financial ecosystem.

Bridge your assets from Bitcoin or Ethereum and watch them transform. Here, your deposits become vTokens intelligent, yield-bearing assets that grow automatically from established Ethereum lending pools. Then, put them to work: trade them, provide liquidity, use them as collateral, or even pay your network fees with them. All while being secured by the immutable strength of Bitcoin.

The VIA ecosystem delivers:

· True Bitcoin-Secured Scalability: A zk-rollup that offers Ethereum’s flexibility with Bitcoin’s finality.
· Gas Freedom: Pay transaction fees in BTC or your own yield-earning vTokens.
· EVM-Native Innovation: Deploy any Ethereum contract instantly. Everything just works.
· Composability Unleashed: A seamless, productive DeFi landscape where protocols stack like never before.

Powered by a cutting-edge stack including zkEVM, Taproot-based bridge security, and Celestia for infinite scalability, VIA Network is more than a solution. It’s the new foundation.

Bridge In. Earn Automatically. Build Without Limits.

The Sovereign Bitcoin DeFi Layer is Live.

[Via Network (prev. Viacoin) @buildonvia]

It's a testnet bridge, so testnet ETH is required

Ensure to add the Ethereum Sepolia network:
https://t.co/f9J4kHIcn5

ETH testnet faucet: https://t.co/pdtsfi7ZLC

USDC Testnet faucet: https://t.co/aYOdKwPPPd

[Via Network (prev. Viacoin) @buildonvia]

Via <> Ethereum Bridge
Shipped on New Year's Eve last night

https://t.co/LBotpBUnwO

- Assets deployed through DeFi lending
- Receive vUSDC (yield-bearing)
- Earn APY || vUSDC to trade

🟠 Bitcoin Finality
🔵 Ethereum yield

[Via Network (prev. Viacoin) @buildonvia]

Over the past few days, we’ve been migrating most of our content from https://t.co/Cih6o4lfRo to our new domain, https://t.co/63TWWabkGB as part of our move to Webflow

[Via Network (prev. Viacoin) @buildonvia]

500+ members so far, and counting! 🙌 🫡
Join us on Discord 👇
https://t.co/LRmrQWcRew

[Via Network (prev. Viacoin) @buildonvia]

Merry Christmas everyone🎄

Take a moment to unplug, spend time with your people, and recharge. We’ll be back to building the future of Bitcoin tomorrow ⚒️

[Via Network (prev. Viacoin) @buildonvia]

Let’s quickly revisit what was done most recently.
Because new updates about Via Bridge are coming 🔜 👇

[Via Network (prev. Viacoin) @buildonvia]

https://t.co/CLwh3F6qwd

[Via Network (prev. Viacoin) @buildonvia]

🤔 Did you know?

We have over $30 billion in crypto assets bridged to Layer 2 chains. Yet, these assets sit in idle vaults, generating zero return for their holders…👇 🧵

[Via Network (prev. Viacoin) @buildonvia]

3/3🧵 Where other L2s simply hold your assets, VIA makes them productive by default, transforming passive liquidity into an active, growing base layer for the entire ecosystem.

Here’s how we do it👇
https://t.co/0QSrriXIjp

[Via Network (prev. Viacoin) @buildonvia]

https://t.co/PztFGqEF7R