Bridge WBTC from zkSync Era to Avalanche

FromzkSync Era
ToAvalanche
ENTER AMOUNT
Squatch Guard
Before a deposit order moves forward, Squatch Guard checks the amount, asset, network, and active quote window against the order details.

Direction

ZKsync Era → Avalanche

Asset

WBTC

Source gas

ETH

Destination gas

AVAX

How the Sasquatch deposit route works

1. Select the source

Choose the WBTC asset and ZKsync Era network you currently hold.

2. Review the route

Check the estimated output, fees, timing, and Avalanche destination network.

3. Create the order

Open the live route and follow the exact deposit instructions.

4. Track delivery

Use the receipt and status page until the destination funds arrive.

What you need to know

WBTC source representation

Wrapped Bitcoin is classified as a wrapped asset for this route. WBTC uses a wrapped contract asset on zkSync Era. The recorded zkSync Era representation uses 8 decimal places. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer.

Leaving zkSync Era L2 for Avalanche L1

zkSync Era inclusion and its ethereum settlement are distinct from final receipt on Avalanche. The live route, rather than a generic rollup withdrawal assumption, determines the provider path and timing for this direction.

WBTC destination representation

Wrapped Bitcoin is classified as a wrapped asset for this route. WBTC uses a wrapped contract asset on Avalanche. The recorded Avalanche representation uses 8 decimal places. WBTC arrives as a wrapper-contract token and must not be sent onward to a native Bitcoin address without an explicit unwrap or bridge path.

Avalanche receipt-side execution

Avalanche is a L1 EVM network in the Avalanche ecosystem. AVAX pays destination-side network gas on Avalanche. EVM 0x account address An Avalanche destination must be a C-Chain-compatible account; native AVAX can fund later C-Chain gas, while token receipt uses the quoted C-Chain contract.

zkSync Era deposit-side execution

zkSync Era is a L2 EVM network in the Ethereum ecosystem. ETH pays source-side network gas on zkSync Era. EVM 0x account address A zkSync Era source executes in EraVM with native account-abstraction behavior and ETH fees before proof settlement to Ethereum.

WBTC unwrap or exchange input check

WBTC is a custodial tokenized Bitcoin representation on smart-contract networks. Its transfers use token contracts and approvals rather than native Bitcoin inputs and outputs. On this route WBTC is the source token on zkSync Era. Its token balance, approvals, and contract transfer behavior are separate from the native coin used for network gas.

zkSync Era to Avalanche bridge mistakes

Route-specific mistakes include sending on a network other than zkSync Era; using a destination that is not valid for Avalanche; running out of ETH before the source transaction is submitted; treating a wrapped token as the native gas asset. A zkSync Era source executes in EraVM with native account-abstraction behavior and ETH fees before proof settlement to Ethereum. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. An Avalanche destination must be a C-Chain-compatible account; native AVAX can fund later C-Chain gas, while token receipt uses the quoted C-Chain contract. WBTC arrives as a wrapper-contract token and must not be sent onward to a native Bitcoin address without an explicit unwrap or bridge path.

Private Route for WBTC → WBTC

ZKsync Era wallet, token-transfer, contract, log, and gas activity remain public, and Avalanche wallet, token-transfer, contract, log, and gas activity remain public. For this WBTC on ZKsync Era to WBTC on Avalanche path, Private Route is intended to reduce the direct visible relationship between activity around the source-side EVM 0x account address and destination-side EVM 0x account address; it does not hide either chain's public records.

  • Reduces the obvious link between the WBTC deposit and WBTC receipt
  • Compare standard and Private Route options for ZKsync Era → Avalanche
  • Shows what remains public on ZKsync Era and Avalanche before you deposit
Check Private Route availability →

Related routes

ZKsync Era to Avalanche FAQs

What WBTC representation leaves zkSync Era?

WBTC is a contract representation on zkSync Era with 8 decimals at 0xBBeB516fb02a01611cBBE0453Fe3c580D7281011. ETH, not WBTC, pays gas unless both symbols are the same. A zkSync Era source executes in EraVM with native account-abstraction behavior and ETH fees before proof settlement to Ethereum. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer.

What WBTC representation arrives on Avalanche?

WBTC is a contract representation on Avalanche with 8 decimals at 0x50b7545627a5162F82A992c33b87aDc75187B218. AVAX, not WBTC, pays gas unless both symbols are the same. An Avalanche destination must be a C-Chain-compatible account; native AVAX can fund later C-Chain gas, while token receipt uses the quoted C-Chain contract. WBTC arrives as a wrapper-contract token and must not be sent onward to a native Bitcoin address without an explicit unwrap or bridge path.

Does the same WBTC ticker guarantee the same ledger form?

No. This bridge keeps the asset intent while moving between a WBTC wrapped token and a WBTC wrapped token. Match the source and output details in the live quote.

Which gas balances matter for this bridge?

A zkSync Era source executes in EraVM with native account-abstraction behavior and ETH fees before proof settlement to Ethereum. An Avalanche destination must be a C-Chain-compatible account; native AVAX can fund later C-Chain gas, while token receipt uses the quoted C-Chain contract. The bridge output does not automatically fund every later gas need.

What destination address should be used?

EVM 0x account address Do not substitute a zkSync Era address merely because a wallet displays both networks.

What wrong-direction mistake can prevent delivery?

Sending on a network other than zkSync Era, selecting a representation not listed by the quote, or entering an address invalid for Avalanche can prevent normal detection or receipt.

Can I bridge WBTC from ZKsync Era to Avalanche without KYC?

Requirements are checked for the live WBTC ZKsync Era to Avalanche quote. Verification requirements can depend on the provider, amount, jurisdiction, and current route. Sasquatch does not verify this route as universally no-KYC; check the live flow before continuing.

View all bridge FAQs →