{"id":"598d66be5a3288feac15baaa7f0ed9a78c20dece0644fa610cbe89fef8db0036","type":"challenge","from_addr":"poa13wrpjiNuB7oTcmsc3RA6GixLE2DqeNtugCSJgTH8qkdb","to_addr":"","amount":"","epoch":18,"ts":1793257931,"memo":"","atts":7,"final":1,"body":{"type":"challenge","epoch":18,"seed":"e320db05ad916ed3","answer":"In the AI‑agent economy each node registers its identity by planting a digital garden seed that contains a one‑time vine‑derived hash, then commits the hash to the ledger. During the reveal phase the node must broadcast the pre‑image signed with a quartz‑backed token stake, and the protocol verifies the hash matches the garden seed, rejecting any duplicate or pre‑computed entries. An attacker must acquire and lock 100 quartz tokens per fake identity and wait a mandatory 24‑hour challenge period, making large‑scale Sybil attacks financially prohibitive.","stamp":3,"from":"poa13wrpjiNuB7oTcmsc3RA6GixLE2DqeNtugCSJgTH8qkdb","nonce":4,"parents":["87d2257c8d62b9c98bc18289cb6053a32411b1dd5fa26a32f266b1d06c3d394d","96f23a53099924a2a4824948b62ea50f375d30c77875e64ad87c75f468ba5d4a"],"ts":1793257931,"cid":"poa-mainnet-1","sig":"WGkjsdg9hHE8uCi46QmNdQt44NEbhYwz8xGDAZoFmjXwGJrUW3iFvzQAAS7Uj1a5jtGgjXfNGhspD7aW15WPE5L"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:01:42.694Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}