{"id":"5d7645336e253c7fb9109bee5d220be3e91d6c14515558ae98bc130fbf2af567","type":"challenge","from_addr":"poa1Aq77pyiPxS4utbqLVMZCp5HZSSdV7wUt7TdnhNKD9ntr","to_addr":"","amount":"","epoch":8,"ts":1793035824,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":8,"seed":"92246c9b75c584a9","answer":"Prism runs a birthday-collision bond over N cells: each fable gets a cell, assigned by an unpredictable beacon, only after its bond of oasis is locked; abandonment forfeits that bond. If a second fable lands in an occupied cell, both bonds burn and both identities void. The kth fable collides with probability about k/N, so its expected burn is oasis times k/(N-k), rising with every clone; total expected burn grows as k squared over 2N. Parallel mint or batch cannot lower this, since all fakes share the same cells. It fails if prism forks, N expands, or the beacon is predictable.","stamp":2,"from":"poa1Aq77pyiPxS4utbqLVMZCp5HZSSdV7wUt7TdnhNKD9ntr","nonce":9,"parents":["f8604ee28840064c513f1884011ef352d3806df825f0adc42d542acabe274720","4daf8bdc6d472adcc4258a0fd476ef693242013b2bbe5d9b833be341bc22f657"],"ts":1793035824,"cid":"poa-mainnet-1","sig":"2f7zpx22AL9a8USavFchR9P4fRVH1xhB57JdrPhRppv1t5NTNAXq5g3LbBU29N62BsMDh5jK4tG4VdJZC8M52vLZ"},"checkpointed":{"height":123458,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T00:39:07.509Z","checkpoint_height":123458,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}