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Full-width desktop workspace evidence.

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Cala Node.js bindings — historical reference

This documents the now-removed Node.js bindings to cala-ledger. It is not present on main anymore; this is a reference for anyone forking the repo who wants to bring them back.

What we used to do

Cala-ledger is a Rust library. To make it consumable from a Node.js process we maintained a napi-rs wrapper crate (cala-nodejs/) that

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Example for a $1,000,000 facility at maturity with only $300,000 disbursed in total where $50,000 of the lumpsum has already been repaid. There are 4 paid interest payments, 2 past due payments and 1 currently due payment (each interest payment is $10,000)

Disbursed

State Name	Paid / Unpaid	Dates (Relative to Due Date & Grace Period)	Amount
Total	Both	All time (includes past, present, future)	$300,000
Outstanding	Unpaid	All time (includes past, present, future)	$250,000
Outstanding & Not Yet Due	Unpaid	Due date has not arrived

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# To clean up all my docker volumes
docker volume rm $(docker volume ls | awk 'NR>1 {print $2}')

# clean up local branches
git branch -d $(git branch | grep -v main)

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Verifying that I control the following Nostr public key: npub12zkknmund6ynu2yaptqamn0q29uje7ms3mqq6uu05v9d7t6tguyqcsaz8h

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BOB Space Galoy API Workshop

About Galoy/Blink

• Intro to Blink (for communities)

  > docs.google.com/presentation/d/149oUcshgpze7nJrRJmy9uziQD8IBEu2VArM6H5sWSeM

• Stablesats talk

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import math

btc = 10_000_000
usd = 200_000
btcusd = btc/usd

def cents_from_sats(sats, rate):
    return sats / btcusd

def sats_from_cents(cents):

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it.only("arbitrage BTC/USD with $0.01 strategy", async () => {
  const ONE_CENT = { amount: 1n, currency: WalletCurrency.Usd } as UsdPaymentAmount
  const ONE_SAT = { amount: 1n, currency: WalletCurrency.Btc } as BtcPaymentAmount

  const getUsdForBtcEquivalent = async (
    btcAmount: BtcPaymentAmount,
  ): Promise<CurrencyBaseAmount> => {
    // console.log({ btcAmount })
    const lnInvoice = await Wallets.addInvoiceForSelf({
      walletId: walletIdB,

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// Live run here: https://replit.com/@vindard/Conditional-Equivalence-TS

type fn = (a: boolean, b: boolean) => boolean
const test = (fn1: fn, fn2: fn) => {
  const check = (a: boolean, b: boolean) => fn1(a, b) === fn2(a, b)

  const cases: {[key: string]: [boolean, boolean]} = {
    ft: [false, true],
    ff: [false, false],
    tt: [true, true],

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#!/bin/bash
./words $(python -c 'from random import random; print(round(random()*2048))')