Avalanche Contract Chain (C-Chain)

Avalanche can be accessed with the following coin types

Environment	Coin Type	Faucet
Avax C-Chain Production	avaxc
Avax C-Chain Testnet	tavaxc	https://faucet.avax-test.network/

Explorer

https://subnets.avax.network/c-chain

Enterprise fee address

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ENTERPRISEID=585c51a5df8380e0e3082e46

curl -X POST \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://app.bitgo-test.com/api/v2/tavaxc/enterprise/$ENTERPRISEID/feeAddressBalance

The C-Chain is an instance of the Ethereum Virtual Machine (EVM). Each enterprise has a fee address which will be used to pay for transaction fees on all Avalanche C-Chain wallets in that enterprise. The fee address is displayed in the dashboard of the BitGo website, and you must fund it before creating a wallet, address, or sending a transaction. If the enterprise's fee address runs out of funds, you will not be able to create new wallets, addresses, or send transactions until you fund the fee address. You will not be able to use one of your own Avalanche C-Chain wallets to fund the fee address if the fee address is too low (because you will not be able to send transactions from your Avalanche C-Chain wallet). It is best to create and fund a non-BitGo Avalanche C-Chain account, so you can use it to fund your BitGo enterprise fee address. Any open source Avalanche C-Chain wallet can be used to create an account.

Please note that the fee address is a single-signature account, and that the private key is created and owned by BitGo. You will not be able to send funds out of the fee address once you have sent them in.

There will be a feeAddress field under the CoinSpecific key for Avalanche C-Chain wallets. You will use this address to pay the fees for creating transactions and addresses.

Wallet construction

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bitgo
  .coin('tavaxc')
  .wallets()
  .generateWallet({
    label: 'My Test Wallet',
    passphrase: 'secretpassphrase1a5df8380e0e30',
    enterprise: '5612c2beeecf83610b621b90964448cd',
  })
  .then(function (wallet) {
    // print the new wallet
    console.dir(wallet);
  });

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LABEL="My Test Wallet"
PASSPHRASE="secretpassphrase1a5df8380e0e30"

curl -X POST \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $ACCESS_TOKEN" \
-d "{ \"label\": \"$LABEL\", \"passphrase\": \"$PASSPHRASE\" }" \
http://$BITGO_EXPRESS_HOST:3080/api/v2/tavaxc/wallet/generate

Avalanche C-Chain wallets can only be created under an enterprise. You must pass in the id of the enterprise to associate the wallet with.

The creation of Avalanche C-Chain wallets requires interaction with the Avalanche ledger to be complete. When you create an Avalanche C-Chain wallet, BitGo sends an initialization transaction on the Avalanche network in order to create the wallet. While these initialization transactions are unconfirmed, the wallet should not be used, nor should anyone attempt to send funds to the wallet. For this reason, while the wallet's initialization transactions are still unconfirmed on the Avalanche C-Chain network, the wallet's receive address will not be visible through the API. This is to protect users against sending to a Avalanche C-Chain wallet which does not exist on the network and losing funds.

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bitgo
  .coin('tavaxc')
  .wallets()
  .getWallet({ id: '585c51a5df8380e0e3082e46' })
  .then(function (wallet) {
    return wallet.createAddress();
  })
  .then(function (newAddress) {
    // print new address details
    console.dir(newAddress);
  });

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WALLET=585c51a5df8380e0e3082e46

curl -X POST \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://app.bitgo-test.com/api/v2/tavaxc/wallet/$WALLET/address

Avalanche C-Chain address creation requires interactions with the Avalanche blockchain. In order to deploy a receive address contract, BitGo sends a transaction on the Avalanche C-Chain network. Please make sure to fund the fee address mentioned above. Like the wallet creation process, a Avalanche C-Chain address will not be immediately usable upon creation and so the caller of this function will have to wait for the initialization transaction to be confirmed before attempting to fetch the address or send funds to it.

Balances

Each Avax is comprised of 1,000,000,000,000,000,000 (10¹⁸) wei, so not even a single Avax can be stored numerically without exceeding the range of Javascript numbers.

For that reason, only string balance properties are available, which are balanceString, confirmedBalanceString, and spendableBalanceString.

Transactions

BitGo's Avalanche C-Chain multisig contract currently only supports one sender and one recipient. That means that the sendMany call will only accept one recipient.

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