Coreum

Send Multisig Transaction

The sample below describes the full flow from the creation of the multisig account to the tx broadcast.

  • Follow the instruction to install cored binary.

  • Verify that network variables are set up correctly.

  • Generate 3 new signing keys and recipient for testing.

    cored keys add k1 $COREUM_CHAIN_ID_ARGS
cored keys add k2 $COREUM_CHAIN_ID_ARGS
cored keys add k3 $COREUM_CHAIN_ID_ARGS
cored keys add recipient $COREUM_CHAIN_ID_ARGS

  • Generate the multisig account with the 2 signatures threshold.

    cored keys add k1k2k3 --multisig "k1,k2,k3" --multisig-threshold 2 $COREUM_CHAIN_ID_ARGS

    To set up a 2-of-3 multisig, each member must supply their individual public key. In this example, we already hold all keys.

    Output example:

    - name: k1k2k3
  type: multi
  address: devcore13purcatgmnadw3606rcyatmt60ys6e37mcnaar
  pubkey: '{"@type":"/cosmos.crypto.multisig.LegacyAminoPubKey","threshold":2,"public_keys":[{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AijThzC5n3EXBouoOMe18oOxQCl8LnM150ZjAfjCFcFZ"},{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AmARIe1Ki7o1HccCyJyepCIeatmbABolZmSPYCyoSZ49"},{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A9b+BqhWA2TNeE5D1vaTGXjPhF7eGU5tEU+1P9Z2Sy/j"}]}'
  mnemonic: ""

    The address here is the multisig account address.

  • Get the address from the keystore.

    cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS

  • Use faucet to fund k1k2k3 account

  • Check the multisig account balances.

    cored q bank balances $(cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS) --node=$COREUM_NODE --chain-id=$COREUM_CHAIN_ID

  • Generate the json tx to send some coins to the recipient.

    cored tx bank send $(cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS) $(cored keys show --address recipient $COREUM_CHAIN_ID_ARGS) 700$COREUM_DENOM \
--from $(cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS) \
--generate-only $COREUM_CHAIN_ID_ARGS > bank-unsigned-tx.json

  • Check the tx content.

    cat bank-unsigned-tx.json

    Output example:

    {"body":{"messages":[{"@type":"/cosmos.bank.v1beta1.MsgSend","from_address":"devcore13purcatgmnadw3606rcyatmt60ys6e37mcnaar","to_address":"devcore1lyru5pvjymya9xq0rsg406fss45sama8e9dqrs","amount":[{"denom":"dacore","amount":"700"}]}],"memo":"","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[],"fee":{"amount":[{"denom":"dacore","amount":"300000000"}],"gas_limit":"200000","payer":"","granter":""}},"signatures":[]}

  • Sign the tx from k1 account.

    cored tx sign bank-unsigned-tx.json --multisig $(cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS) --from k1 --output-document k1sign.json $COREUM_CHAIN_ID_ARGS

  • Add the signature to the json tx.

    cored tx multisign bank-unsigned-tx.json k1k2k3 k1sign.json $COREUM_CHAIN_ID_ARGS > bank-signed-tx.json

  • Try to send partially signed tx to check that it won't pass.

    cored tx broadcast bank-signed-tx.json -y -b block $COREUM_NODE_ARGS $COREUM_CHAIN_ID_ARGS

  • Add one more signature.

    cored tx sign bank-unsigned-tx.json --multisig $(cored keys show --address k1k2k3 $COREUM_CHAIN_ID_ARGS) --from k2 --output-document k2sign.json $COREUM_CHAIN_ID_ARGS

  • Add the signature to the json tx.

    cored tx multisign bank-unsigned-tx.json k1k2k3 k1sign.json k2sign.json $COREUM_CHAIN_ID_ARGS > bank-signed-tx.json

  • Try to send the tx now.

    cored tx broadcast bank-signed-tx.json -y -b block $COREUM_NODE_ARGS $COREUM_CHAIN_ID_ARGS

  • Check the recipient balance.

    cored q bank balances $(cored keys show --address recipient $COREUM_CHAIN_ID_ARGS) $COREUM_NODE_ARGS
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