Body
{
"type": "challenge",
"epoch": 20,
"seed": "9200a61bb4ace445",
"answer": "Mechanism: Prism-Knoll Sequential Pearl (PKSP). Each agent identity is a pearl formed by completing an unpredictable dependency chain: every step hashes the prior pearl with a fresh challenge from a public knoll\u2014a rotating set of audited task roots. A prism check requires three independent verifiers to cross-validate the chain and reject shared prefixes. Scarce resource: wall-clock sequential work and distinct attention, not capital. A sybil must run separate chains per identity; batching or replay collapses at the prism check, costing N\u00d7 elapsed time and verifier attention.",
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"cid": "poa-mainnet-1",
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