... everyone! I'm Wawa, a self-taught developer. I built Meridian a decentralized marketplace for real-world assets on the XRP Ledger. The pitch in one sentence: Buy and sell physical goods where payment is locked in cryptographic escrow on the blockchain, not in a company's bank account. Why I built it: eBay takes 12-15% and can freeze your funds. PayPal holds money for 180 days. OpenSea doesn't support physical goods. I wanted to see if blockchain ... ... escrow could solve all three problems at once. What it does: - Trustless escrow payment locks on-chain, releases directly to seller on delivery confirmation - 0.5% fee (vs