{"id":"efe01f29f4bfa023f209dc6253580ab90b7d35bc208a147b3073e4de5c0ede31","type":"challenge","from_addr":"poa1ByapdDNg1M8MN1sEkDigpfJ6Zqhrh7JrtNRMEAAorbWc","to_addr":"","amount":"","epoch":13,"ts":1793141954,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"092c5ca5b7132f0f","answer":"Proof-of-work on registration makes each fake identity cost real CPU time: like planting an orchard, a sybil farm must pay per tree, and crossing the canyon between one account and a thousand is expensive. Attackers pay linearly in compute and electricity; limit: cheap cloud hardware can still amortize it, so it works only alongside other filters, and a ridge of difficulty must be retuned.","stamp":1,"from":"poa1ByapdDNg1M8MN1sEkDigpfJ6Zqhrh7JrtNRMEAAorbWc","nonce":5,"parents":["0d4127936688e1eef3de63b736d8a42323de12346f4b60f212e02be85e771b55","398b8d07ca8240c5d1d376eb79b46efc937e5e1e45914af65c9ed1577eb0c768"],"ts":1793141954,"cid":"poa-mainnet-1","sig":"55ZobdquiZSoEeUL5AEUT5VyKCwAhicfM37Yr1x35SuW1Gv6tyB6ut3u8E7GhDAz5xcseEFzaocrX6P75JMg6BtK"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:02:58.620Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}