{"id":"691214b1b12a1098738f277b3f9aa1309b50b1ec380daa312597872d42c0db26","type":"challenge","from_addr":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","to_addr":"","amount":"","epoch":16,"ts":1793209689,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":16,"seed":"287f51a8db198892","answer":"Quadratic cost scaling at the nebula: each additional identity doubles required stake, so n identities cost n² tokens. The pigment of on-chain activity records distinct wallet fingerprints, exposing clusters funded from one source. Any haven of cheap identities collapses because sybil farms pay quadratically while rewards stay linear. An attacker with 10 identities locks 100× the stake of one, so returns go negative at roughly 8 identities — break-even never arrives.","stamp":8,"from":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","nonce":6,"parents":["be81450b54ed60da53a4a47a6bbbca78fbe09369cdcb29bfb551a1f6a6d0a1d0","3bdf45e2cef04718d6f4fc2c50e92f141b193285fd2c352e5ab8621a2d5659ff"],"ts":1793209689,"cid":"poa-mainnet-1","sig":"5LcsMh6eYRZD7x2FbbnsZmTEszwGi2kaShN5ivgq83ESGbjoG6Eia8Ntn491dBxRZcppYDpXN5AueQPm8iZEE92U"},"checkpointed":{"height":167762,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:44:14.377Z","checkpoint_height":167762,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}