mirror of
https://github.com/urbit/shrub.git
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151 lines
4.3 KiB
Plaintext
151 lines
4.3 KiB
Plaintext
/- *bitcoin, bp=btc-provider
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/+ bip32
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|%
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+$ params [batch-size=@ud fam-limit=@ud piym-limit=@ud]
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+$ provider [host=ship connected=?]
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+$ block @ud
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+$ btc-state [=block fee=(unit sats) t=@da]
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+$ payment [pend=(unit txid) =xpub =address payer=ship value=sats note=(unit @t)]
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+$ piym
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$: ps=(map ship payment)
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pend=(map txid payment)
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num-fam=(map ship @ud)
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==
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+$ poym [txbu=(unit txbu) note=(unit @t)]
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::
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:: command: run from the CLI or as API calls by our ship
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::
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+$ command
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$% [%set-provider provider=(unit ship)]
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[%check-provider provider=ship]
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[%check-payee payee=ship]
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[%set-current-wallet =xpub]
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[%add-wallet =xpub =fprint scan-to=(unit scon) max-gap=(unit @ud) confs=(unit @ud)]
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[%delete-wallet =xpub]
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[%init-payment-external =address value=sats feyb=sats note=(unit @t)]
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[%init-payment payee=ship value=sats feyb=sats note=(unit @t)]
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[%broadcast-tx txhex=cord]
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[%gen-new-address ~]
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==
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:: action: how peers poke us
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::
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+$ action
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$% [%gen-pay-address value=sats note=(unit @t)]
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[%give-pay-address =address value=sats]
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[%expect-payment =txid value=sats]
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==
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:: internal: actions that simply make the state machine more explicit
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::
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+$ internal
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$% [%add-poym-raw-txi =txid rawtx=hexb]
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[%close-pym ti=info:tx]
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[%fail-broadcast-tx =txid]
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[%succeed-broadcast-tx =txid]
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==
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::
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:: Wallet Types
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::
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:: nixt: next indices to generate addresses from (non-change/change)
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:: addi: HD path along with UTXOs
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:: wach: map for watched addresses.
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:: Membership implies the address is known by outside parties or had prior activity
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:: scon: indices to initially scan to in (non-)change accounts
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:: defaults to 2^32-1 (i.e. all the addresses, ~4B)
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:: wilt: copulates with thousands of indices to form addresses
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::
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++ max-index (dec (pow 2 32))
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+$ nixt (pair idx idx)
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+$ addi [used=? =chyg =idx utxos=(set utxo)]
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+$ wach (map address addi)
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+$ scon $~([max-index max-index] (pair idx idx))
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+$ wilt _bip32
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::
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:: walt: wallet datastructure
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:: scanned: whether the wallet's addresses have been checked for prior activity
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:: scan-to
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:: max-gap: maximum number of consec blank addresses before wallet stops scanning
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:: confs: confirmations required (after this is hit for an address, wallet stops refreshing it)
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::
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+$ walt
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$: =xpub
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=network
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=fprint
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=wilt
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=bipt
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=wach
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=nixt
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scanned=?
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scan-to=scon
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max-gap=@ud
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confs=@ud
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==
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:: batch: indexes to scan for a given chyg
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:: scans: all scans underway (batches)
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::
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+$ batch [todo=(set idx) endpoint=idx has-used=?]
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+$ scans (map [xpub chyg] batch)
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::
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:: insel: a selected utxo for input to a transaction
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:: pmet: optional payment metadata
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:: feyb: fee per byte in sats
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:: txi/txo: input/output for a transaction being built
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:: - txo has an hdkey if it's a change account
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:: - by convention, first output of txo is to the payee, if one is present
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:: txbu: tx builder -- all information needed to make a transaction for signing
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::
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+$ insel [=utxo =chyg =idx]
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+$ feyb sats
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+$ txi [=utxo rawtx=(unit hexb) =hdkey]
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+$ txo [=address value=sats hk=(unit hdkey)]
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+$ txbu
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$: =xpub
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payee=(unit ship)
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=vbytes
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txis=(list txi)
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txos=(list txo)
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signed-tx=(unit hexb)
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==
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:: hest: an entry in the history log
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::
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+$ hest
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$: =xpub
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=txid
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confs=@ud
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recvd=(unit @da)
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inputs=(list [=val:tx s=(unit ship)])
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outputs=(list [=val:tx s=(unit ship)])
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note=(unit @t)
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==
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+$ history (map txid hest)
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::
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+$ error
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$? %cant-pay-ourselves
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%no-comets
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%no-dust
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%tx-being-signed
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%insufficient-balance
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==
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:: data to send to the frontend
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::
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+$ update
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$% $: %initial
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provider=(unit provider)
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wallet=(unit xpub)
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balance=(unit [confirmed=sats unconfirmed=sats])
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=history
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=btc-state
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address=(unit address)
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==
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[%change-provider provider=(unit provider)]
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[%change-wallet wallet=(unit xpub) balance=(unit [p=sats q=sats]) =history]
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[%psbt pb=@t]
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[%btc-state =btc-state]
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[%new-tx =hest]
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[%cancel-tx =txid]
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[%new-address =address]
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[%balance balance=(unit [confirmed=sats unconfirmed=sats])]
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[%error =error]
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==
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::
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--
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