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88 lines
2.6 KiB
Markdown
88 lines
2.6 KiB
Markdown
# btc-wallet-* Scratch Code
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## xpub
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```
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=xpub1 'zpub6r8dKyWJ31XF6n69KKeEwLjVC5ruqAbiJ4QCqLsrV36Mvx9WEjUaiPNPGFLHNCCqgCdy6iZC8ZgHsm6a1AUTVBMVbKGemNcWFcwBGSjJKbD'
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=xpub2 'xpub6D7yaZieZEeG617UcKXDhbsDeso6bmxSAiGWkvkASoiwcjaRtrH5HeNRnDT25s7zmxYzj6MtFe32dVqcf9YcBKKgn9THHjwn2uSjkvobK4e'
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=bl -build-file %/lib/btc-wallet-store/hoon
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```
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### add
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```
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:btc-wallet-store|action [%add-wallet xpub ~ ~]
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```
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### get address at indices
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```
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=walt1 (from-xpub:walt:bl xpub1 ~ ~)
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(get-address:walt1 %0 0)
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```
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### update address data
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```
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=walt1 (from-xpub:walt:bl xpub1 ~ ~)
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(~(mk-address walt1 %0) 0)
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:: gives bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc
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=walt1 (~(insert-address walt1 %0) [%bech32 'bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc'] [%0 0 ~])
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nixt.st.walt1
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:: gives [p=1 q=0] (nixt updated since it was 0)
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=walt1 (~(insert-address walt1 %0) [%bech32 'bc1qa5jcdww8u8493zttjjf6q5wu89e6knpvmsh7x4'] [%0 2 ~])
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nixt.st.walt1
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:: gives [p=1 q=0] (no update)
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=walt1 (~(insert-address walt1 %0) [%bech32 'bc1qvqrdh8suyv63ntaa0d7hmcamavv8283sngh6e5'] [%0 1 ~])
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nixt.st.walt1
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:: gives [p=3 q=0] (skips index 2, since already a used address there)
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=walt1 (insert-address:walt1 [%bech32 'bc1qvqrdh8suyv63ntaa0d7hmcamavv8283sngh6e5'] [%0 4 ~])
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:: gives error, because address is inserted at the wrong index
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```
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### generate new address (for receiving payment)
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```
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=walt1 (from-xpub:walt:bl xpub1 ~ ~)
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=res ~(gen-address walt1 %0)
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p.res
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nixt.st.q.res
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:: gives
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:: [%bech32 'bc1q0adfj7ur750hjwufzzlfj5ytqzsnd7fz9fjuzc']
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:: [p=1 q=0]
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```
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## Algos
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Scan addresses. (map xpub (pair list list))
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outgoing wire is /scan/xpub/change/idx
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- keep (jug cord idx) of xpub+chyg -> idx
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- keep (map cord ?) of xpub+chyg-> has-used?
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- every time we get a response
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- check whether idx in `scanning`--ignore if not (old response)
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- insert the address into the wallet **if it's used**
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- if used, update `has-used` for this xpub to be true
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- delete idx from `scanning` jug
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- check whether scanning is now empty. If it is, check whether has-used is true
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## scratch code, refactor
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++ update-utxos
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|= [a=address:btc us=(set utxo)]
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^- (quip card _state)
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=/ xpubs=(list tape)
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%~ tap in
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~(key by walts.state)
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|- ?~ xpubs `state
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=/ w=walt (~(got by walts.state) i.xpubs)
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?: (~(has by wach.w) a)
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%: send-address-update
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i.xpubs
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(update-wallet w a us)
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a
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us
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==
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$(xpubs t.xpubs)
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::
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++ send-address-update
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|= [xpub=tape =walt a=address:btc us=(set utxo)]
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^- (quip card _state)
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:_ state(walts (~(put by walts.state) xpub walt))
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~[[%give %fact ~[/wallets] %btc-wallet-store-update !>([%address a us])]]
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::
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