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Activation Block Height: 347500

What is Overwinter?

Overwinter is the first network upgrade for Zcash. Its purpose is strengthening the protocol for future network upgrades. It includes versioning, replay protection for network upgrades, performance improvements for transparent transactions, a new feature of transaction expiry, and more.

How do I upgrade?

Keep your Zcash software updated, and you'll be on the newly-upgraded main chain along with everyone else. You will not miss the network upgrade, unless you are running your own full node and have manually configured your client to continue running the old code.

List of resources

Third-party support

  • AirTM
  • Binance
  • Bitfinex
  • CEX.io
  • Coinomi
  • Cryptonator Wallet
  • Exodus Wallet
  • F2Pool
  • FlyPool
  • Gemini
  • Genesis Mining
  • Huobi Pro
  • Jaxx
  • Lamassu
  • Lykke
  • Poloniex
  • Shapeshift
  • SimpleSwap
  • Trezor
  • Zcha.in

Third-party support forthcoming

  • Ledger

Third-parties who wish to be included in this list should email info@z.cash with a link to your official statement of intent for Overwinter support.

Notice: Network Upgrade Overwinter will activate at block 347500, to be mined 2018-06-25 12:00 UTC-04:00 assuming 150 seconds/block