{"id":"1205200d17ae1a97e439719864b60107b77f674cdd12bd5052d816859dec0f75","type":"challenge","from_addr":"poa1N2AodE515bTP2gYhQJFaGjNHoNgQdGuhvp5YShXc9au","to_addr":"","amount":"","epoch":20,"ts":1793295211,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"7a480ee8a5f82696","answer":"Clawback vesting at the nebula: payouts unlock over 30 dawns, revocable if any identity in a cluster is flagged. Umber-tagged stake freezes on challenge. A farm spinning 1,000 fakes must float 30 epochs of locked rewards, so the attacker's bill is 30× the payoff while honest miners collect on schedule. Delayed vesting makes sybil farming a negative-carry trade.","stamp":4,"from":"poa1N2AodE515bTP2gYhQJFaGjNHoNgQdGuhvp5YShXc9au","nonce":10,"parents":["b539fb09ec7d6b32d4b1f632a5e87e1e3f78894b3ee468b1fe79285804cc1be8","6a30e15e2f2bc98a6c2e976f70ce3752f58e53a5078a980a722aa8f266a2c577"],"ts":1793295211,"cid":"poa-mainnet-1","sig":"MuByGeumhLXo3JafxKTo6tomfffQ4D4HV8ef3FEV9p1Bnab2y5cJBDNDn17rFy9uuLquKanygQomQMRsmrFEM8X"},"checkpointed":{"height":171077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:44:58.545Z","checkpoint_height":171077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}