Mmatt goodwin20h ago · 6 min readCrypto shipping labels: how should your app handle an address change after payment?Crypto shipping labels: how should your app handle an address change after payment? A customer pays, then sends a message: “Please ship it to my office instead.” For an e-commerce app buying crypto shbitcoinshippinglabels.hashnode.dev
Mmatt goodwin1d ago · 6 min readBuy shipping labels with bitcoin: how should a repair shop record parcel condition?Buy shipping labels with bitcoin: how should a repair shop record parcel condition? A repair shop returning a serviced camera has two separate jobs: arrange its shipment and preserve a clear record ofbitcoinshippinglabels.hashnode.dev
Mmatt goodwin2d ago · 7 min readBitcoin postage: how do you allocate shipping costs when one order needs two parcels?Bitcoin postage: how do you allocate shipping costs when one order needs two parcels? An order contains a ceramic mug and a poster. Your packing team chooses a box for the mug and a tube for the postebitcoinshippinglabels.hashnode.dev
Mmatt goodwin3d ago · 6 min readbtcpostage alternative: How should a shipping dashboard separate rates from crypto payments?btcpostage alternative: How should a shipping dashboard separate rates from crypto payments? If you’re evaluating a btcpostage alternative for an e-commerce workflow, ask a specific engineering questibitcoinshippinglabels.hashnode.dev
Mmatt goodwin4d ago · 7 min readCrypto Shipping Labels: Preventing Duplicate Purchases in Your Fulfillment QueueCrypto Shipping Labels: Preventing Duplicate Purchases in Your Fulfillment Queue A fulfillment worker refreshes a stalled page. Another worker picks up the same order. Meanwhile, a crypto payment is sbitcoinshippinglabels.hashnode.dev
Ssignal States6d ago · 4 min readHow we built a crypto Fear & Greed index from futures data, and what it can't tell youEvery crypto chart site quotes a Fear & Greed number. Few say what is inside it. We built one from the futures market's own daily prices and wrote the method down so anyone can reproduce it. This postsignalstates.hashnode.dev
QQistDeFiOct 24 · 3 min readHow Does the Smart Contract Know When to Execute?1. Time Mechanisms in Smart Contracts Smart contracts operate on the blockchain and do not have a human concept of 'now'. Instead, they execute based on predefined conditions. A smart contract does noqistdefi.hashnode.dev
Mmatt goodwinOct 23 · 5 min readBuy shipping labels with crypto: invoice IDs and tracking numbers belong in separate fieldsBuy shipping labels with crypto: invoice IDs and tracking numbers belong in separate fields A buyer sends you an invoice number and asks where their parcel is. You paste it into a carrier’s tracking pbitcoinshippinglabels.hashnode.dev
QQistDeFiOct 23 · 2 min readSecurity Auditor Asks: What Makes the Contract Secure?What Does the Security Auditor Look For? A security auditor is an expert who examines smart contracts for vulnerabilities and weaknesses. In Qist's Islamic decentralized finance contract, the auditor qistdefi.hashnode.dev
SSwiftedgeOct 21 · 8 min readBitcoin order book: what our own data showed us, and what it didn'tSeven findings from recording the Bitcoin futures order book and options market, the ones that surprised us and the ones that disappointed us, and where you can watch each of them live for free. We buswiftedgeuk.hashnode.dev
