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init.md

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General instructions for initialising Mainstay

A set of instructions for setting up the Mainstay service. This requires running 2 Bitcoin full nodes and setting up a 1 of 2 P2SH multisig address for the attestations. The Mainstay service coordinates with the transaction signing tools via zmq, sending attested hashes, new commitments and transactions to sign. All transactions are committted through the main service.

Alternatively HSM interfaces can be used instead of the transaction signing tools. In this case, the P2SH address is generated by combining the pubkeys of the HSMs instead. The rest of the functionality should work in a very similar manner.

Initial attestation

Generate 2 addresses

$ bitcoin-cli -datadir=testnetbtc-datadir/ getnewaddress "" legacy 2MwvCUjtecBAFcc7SWhEu8NyT1bLsCRtN6J

$ bitcoin-cli -datadir=testnetbtc-datadir/ getnewaddress "" legacy 2N4FJ6xpbGdUvC8RjfMmQ6bzWXwEfWCFcYF

Generate multisig 1 of 2 address

$ bitcoin-cli -datadir=testnetbtc-datadir/ addmultisigaddress 1 "["2NFBB5okotyGFLmceXK7q18ufuv11NmefUJ","2NE8WKRRuj53udVsuyj5GbVfyUNN6ZSE4ia"]" "" legacy

{ "address": "2N5ckx6eXY5vx3DLwBwSZsNVShiZ6k6mSGd", "redeemScript": "512103d11753d31309988c323142a0171e5b2319a8651479835afa4ab8ecb6442141b921034f0538871c910019b8e15a3b400b63971703822c9b2ab8b4183200e548fefbf952ae" }

Dump priv keys

$ bitcoin-cli -datadir=testnetbtc-datadir/ dumpprivkey 2NFBB5okotyGFLmceXK7q18ufuv11NmefUJ cTgsB8DjF2vjhFrtCPopvknmNWP6CTQeb1Sd9zvXxRF5qHp9V4ct

$ bitcoin-cli -datadir=testnetbtc-datadir/ dumpprivkey 2NE8WKRRuj53udVsuyj5GbVfyUNN6ZSE4ia cNGEfurnx9oL6z8XUuigPXxoxs5cmMxfwwnDbAa258StQ4AQTH8P

Import generated multisig address

$ bitcoin-cli -datadir=testnetbtc-datadir/ importaddress 2N5ckx6eXY5vx3DLwBwSZsNVShiZ6k6mSGd "" false

Send funds to generated multisig address

$ bitcoin-cli -datadir=testnetbtc-datadir/ getbalance 0.07926900

bitcoin-cli -datadir=testnetbtc-datadir/ sendtoaddress 2N5ckx6eXY5vx3DLwBwSZsNVShiZ6k6mSGd 0.07926900 "" "" true

87e56bda501ba6a022f12e178e9f1ac03fb2c07f04e1dfa62ac9e1d83cd840e1

bitcoin-cli -datadir=testnetbtc-datadir/ sendrawtransaction 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 87e56bda501ba6a022f12e178e9f1ac03fb2c07f04e1dfa62ac9e1d83cd840e1

Topup information

Generate 2 addresses

$ bitcoin-cli -datadir=/Users/nikolaos/testnetbtc-datadir2/ getnewaddress "" legacy 2MtEZ7J8ZXoieL7iHyUQw91TZpLEcVQTAyK

$ bitcoin-cli -datadir=/Users/nikolaos/testnetbtc-datadir2/ getnewaddress "" legacy 2MwvCUjtecBAFcc7SWhEu8NyT1bLsCRtN6J

Generate multisig 1 of 2 address

$ bitcoin-cli -datadir=/Users/nikolaos/testnetbtc-datadir2/ addmultisigaddress 1 "["2MtEZ7J8ZXoieL7iHyUQw91TZpLEcVQTAyK","2MwvCUjtecBAFcc7SWhEu8NyT1bLsCRtN6J"]" "" legacy

{ "address": "2NBYFyyMpPeLCb67bykLBHMByu1dSRGsim1", "redeemScript": "512102a2411030da6082ac32d0166fc19f03e264c6c2a138f83a29120d0b59969670792103d11753d31309988c323142a0171e5b2319a8651479835afa4ab8ecb6442141b952ae" }

Dump priv keys

$ bitcoin-cli -datadir=/Users/nikolaos/testnetbtc-datadir2/ dumpprivkey 2MtEZ7J8ZXoieL7iHyUQw91TZpLEcVQTAyK cPLfW9BRRJjZNwNHwrz6B5XEmsTHRFsHYYFRTAQChULT5nUn8FkW

$ bitcoin-cli -datadir=/Users/nikolaos/testnetbtc-datadir2/ dumpprivkey 2MwvCUjtecBAFcc7SWhEu8NyT1bLsCRtN6J cTgsB8DjF2vjhFrtCPopvknmNWP6CTQeb1Sd9zvXxRF5qHp9V4ct

Running the service

go build && go install && mainstay

Running the signing tools

  • signer 1

go run $GOPATH/src/mainstay/cmd/txsigningtool/txsigningtool.go -pk cTgsB8DjF2vjhFrtCPopvknmNWP6CTQeb1Sd9zvXxRF5qHp9V4ct -pkTopup cPLfW9BRRJjZNwNHwrz6B5XEmsTHRFsHYYFRTAQChULT5nUn8FkW -host *:5001

  • signer 2

go run $GOPATH/src/mainstay/cmd/txsigningtool/txsigningtool.go -pk cNGEfurnx9oL6z8XUuigPXxoxs5cmMxfwwnDbAa258StQ4AQTH8P -pkTopup cTgsB8DjF2vjhFrtCPopvknmNWP6CTQeb1Sd9zvXxRF5qHp9V4ct -host *:5002