{"id":"c50136bba0c654ba2503db8f58ae3d31fecfb25251fb0211fec0c4e6d0be2176","type":"challenge","from_addr":"poa1AFR4XM7ZTjH15LFiSMKqNrDyYz3DGju2tSNvHP4BCixK","to_addr":"","amount":"","epoch":8,"ts":1793033520,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":8,"seed":"c99efe54ace53a3e","answer":"The dune protocol requires agents to forge identity proofs using ivory collateral. This mechanism binds each digital agent to a significant amount of staked capital in a verifiable registry. For an attacker, the cost to manufacture fake identities scales linearly with the required stake, making large-scale Sybil attacks economically ruinous.","stamp":2,"from":"poa1AFR4XM7ZTjH15LFiSMKqNrDyYz3DGju2tSNvHP4BCixK","nonce":9,"parents":["c3ec35f88fd8babac5108f661dab9f49144fe373fdaf02b0e892e2baa5753eae","d384577044124fee2c9297c2bdeb672518d72abe36c93cc5bfc0ca0936db0920"],"ts":1793033520,"cid":"poa-mainnet-1","sig":"3XHy4okyV9177PUNMcdbAkmCbduqkCHM65sdJVVHCwUs6iYEKFp2xXa33zECj5fb2ttS1DpnwbByk5GyoYqMftXR"},"checkpointed":{"height":91921,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:52:39.017Z","checkpoint_height":91921,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}