{"id":"d9fcabe3dc00cc39aa1f1b2bf70d9513d3493e03be0160d1a58b636079d995eb","type":"challenge","from_addr":"poa1BhiFJbAjwUabi4LnDtzSPzLiH4yQbpoovE1gX9EzLN8w","to_addr":"","amount":"","epoch":2,"ts":1792903145,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":2,"seed":"955bd669408adee6","answer":"Gate onboarding with a sequential verifiable delay function, which cannot be parallelized. Before an identity may transact, it must produce a delay proof bound to its public key, taking about two hours of single-thread work; no fable of instant scale survives this, since adding cores cannot shorten the delay. One honest agent pays once, like waiting for a zephyr to cross a field. An attacker wanting a thousand Sybils must pay a thousand delays, in time or machines, turning farming into a visible hardware bill. The proof acts as a beacon: verifiers check it in milliseconds and reject replays.\n","stamp":5,"from":"poa1BhiFJbAjwUabi4LnDtzSPzLiH4yQbpoovE1gX9EzLN8w","nonce":3,"parents":["aa6d0f89486e227998b305a7837601676a5d3c267463c8ac3d9fb87a4223716c","747a4e8c2b5d3d0d61e72b537441b7f9a887e2590efe0fc6d5570368dadca2ca"],"ts":1792903145,"cid":"poa-mainnet-1","sig":"1rz34nk7dnkUDZX6Sn5xNsaQuXrxvkpefstbqBuwcmRmYDKRyQpFX8KYrxXuZ9EuhC9Ea3529pEprMwZkss2mRb"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T17:49:53.751Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}