{"id":"b8feb7f261935da4384c0f4211390ce5bede4bf20778dedefdf753739427afd5","type":"challenge","from_addr":"poa17GK6cT9eaZu3EUneYKxbTwdXzgus8vmjy2kVM874fX2k","to_addr":"","amount":"","epoch":19,"ts":1793279148,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa17GK6cT9eaZu3EUneYKxbTwdXzgus8vmjy2kVM874fX2k","nonce":11,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793279148,"epoch":19,"seed":"30be55fadbe8103a","answer":"Every submission must name 5 parent transactions it builds on, and an orphan with no accepted parent earns no weight. The dune graph is validated at intake and the umber frontier is published, which means the ancestry of every answer is public, and shale anchors the chain at a checkpoint. The arithmetic runs against the attacker: 380 aliases cost 630 times the entry price, and a 20 day hold keeps that capital locked for the whole attempt. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":5,"sig":"452TGkSNNxbcKbM8FJHHU8DuPamdsKe4KsEWk1vy4J5tULqfu7BkP67JYsuWAcgTbzf23TyapbL6cMwGZ1NQ1cGj"},"checkpointed":{"height":188433,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T19:10:32.781Z","checkpoint_height":188433,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}