btc-wallet-* Scratch Code

xpub

Mnemonic

absurd sick rose mask magnet know slide spell rent casual someone grant giant inhale toward

=xpub1 'zpub6r8dKyWJ31XF6n69KKeEwLjVC5ruqAbiJ4QCqLsrV36Mvx9WEjUaiPNPGFLHNCCqgCdy6iZC8ZgHsm6a1AUTVBMVbKGemNcWFcwBGSjJKbD'
=xpub2 'xpub6D7yaZieZEeG617UcKXDhbsDeso6bmxSAiGWkvkASoiwcjaRtrH5HeNRnDT25s7zmxYzj6MtFe32dVqcf9YcBKKgn9THHjwn2uSjkvobK4e'
=bl -build-file %/lib/btc-wallet-store/hoon

add

:btc-wallet-store|action [%add-wallet xpub ~ ~]

get address at indices

=walt1 (from-xpub:walt:bl xpub1 ~ ~)
(get-address:walt1 %0 0)

update address data

=walt1 (from-xpub:walt:bl xpub1 ~ ~)
(~(mk-address walt1 %0) 0)
::  gives bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc
=walt1 (~(insert-address walt1 %0) [%bech32 'bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc'] [%0 0 ~])
nixt.st.walt1
::  gives [p=1 q=0] (nixt updated since it was 0)
=walt1 (~(insert-address walt1 %0) [%bech32 'bc1qa5jcdww8u8493zttjjf6q5wu89e6knpvmsh7x4'] [%0 2 ~])
nixt.st.walt1
::  gives [p=1 q=0] (no update)
=walt1 (~(insert-address walt1 %0) [%bech32 'bc1qvqrdh8suyv63ntaa0d7hmcamavv8283sngh6e5'] [%0 1 ~])
nixt.st.walt1
::  gives [p=3 q=0]  (skips index 2, since already a used address there)

=walt1 (insert-address:walt1 [%bech32 'bc1qvqrdh8suyv63ntaa0d7hmcamavv8283sngh6e5'] [%0 4 ~])
::  gives error, because address is inserted at the wrong index

generate new address (for receiving payment)

=walt1 (from-xpub:walt:bl xpub1 ~ ~)
=res ~(gen-address walt1 %0)
p.res
nixt.st.q.res
::  gives 
::  [%bech32 'bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc']
::  [p=1 q=0]

Scanning

Mnemonic

abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about

manual scanning of empty wallet

With max-gap=3

:btc-wallet-hook|action [%set-provider ~dopzod]
=scan-xpub 'zpub6rFR7y4Q2AijBEqTUquhVz398htDFrtymD9xYYfG1m4wAcvPhXNfE3EfH1r1ADqtfSdVCToUG868RvUUkgDKf31mGDtKsAYz2oz2AGutZYs'
:btc-wallet-store|action [%add-wallet scan-xpub ~ [~ 3]]
:btc-wallet-store +dbug
:: shows scans with the xpub and {0 1 2} todos

::  %0 account has no used
=btc -build-file %/lib/btc/hoon
:btc-wallet-store|action [%watch-address scan-xpub %0 1 *(set utxo:btc) used=%.n]
:btc-wallet-store|action [%watch-address scan-xpub %0 2 *(set utxo:btc) used=%.n]
:btc-wallet-store|action [%watch-address scan-xpub %0 0 *(set utxo:btc) used=%.n]
::  dbug should give empty for scans: [xpub %0]
:btc-wallet-store|action [%watch-address scan-xpub %1 2 *(set utxo:btc) used=%.n]
:btc-wallet-store|action [%watch-address scan-xpub %1 0 *(set utxo:btc) used=%.n]
:btc-wallet-store|action [%watch-address scan-xpub %1 1 *(set utxo:btc) used=%.y]
:: dbug should show re-filled scans: [xpub %1]

scrys

.^((list @t) %gx /=btc-wallet-store=/scanned/noun)

Algos

Monitor addresses

nixt also stores next 50 addresses for each account.
every update-address call also checks those

make a payment

make payment
- get address
- on-agent gets return value, construct tx
- store tx (view or other command can get it)

:: ++ send-address-update |= [xpub=tape =walt a=address:btc us=(set utxo)] ^- (quip card state) : state(walts (~(put by walts.state) xpub walt)) ~%give %fact ~[/wallets] %btc-wallet-store-update !>([%address a us]) ::

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