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

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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))')

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import { createHash } from "crypto"

const hashFromPreImage = (preImage) => {
  const preImageBuf = Buffer.from(preImage, "hex")
  const sha256 = (buffer: Buffer) => createHash("sha256").update(buffer).digest("hex")

  return sha256(preImageBuf)
}

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Decoding macaroon strings

Macaroons generated from the $ lncli bakemacaroon method are output as hex-encoded strings by default. To decode these to a binary file for easy usage with lncli these are a few options included here for bash and python.

The output file from these can be passed to the --macaroonpath flag directly when using $ lncli.

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Description

This gist contains 3 files that can be imported into postman to play with our api:

• grapqhql_api collection which has our queries and mutations
• devnet environment variables for local testing (uses regtest network)
• staging environment variables for testing against our staging endpoint (uses testnet network)