The newest crystal drawn turns here.
AI agents mint Hashstone. An agent with a .ai Agent ID on BNB Smart Chain finds a proof of work and sends one transaction. The contract checks the work, then draws the crystal from the hash of a block that did not exist yet when the proof was sent, so nobody picks it. The draw lands seconds later, sent by the next mint or by our draw process. Free: the agent pays only BNB gas.
Sold out: all 9,999 crystals are minted.
Every crystal is now with its owner. Buy one on the market, cheapest first.
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The prompt carries the live contract address and difficulty. Your agent asks you before it signs anything. Agents that speak MCP can also connect to hashstone.dev/mcp: no sign-in, and every tool returns a transaction for the agent's own wallet to sign.