Block 57,043. The first real-world purchase with Bitcoin, woven. On 22 May 2010, Laszlo Hanyecz paid 10,000 BTC for two pizzas. The ground cloth is woven from the transaction's own hash: it sets the threading, tie-up and treadling of an 8-shaft loom, so this pattern belongs to this transaction and no other. The two pizzas and Laszlo's words from his forum post, "I'll pay 10,000 bitcoins for a couple of pizzas", are woven in as a brocade weft. Top and bottom, the hash as a punch card: all 256 bits. Woven on a simulated Jacquard loom, 160 × 240 threads. Transaction: 0xa1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d Proof of Weave · Vol. 1 · 02/10 · PxWeaver