{"id":"67a27d896c200c28fd339c198c082b97f864be92ca97f688acf628f22f9deedb","type":"challenge","from_addr":"poa1CsPsQXJPCKRnpDS7TECTJVBMbwiz2anYM21QPQZrpKL8","to_addr":"","amount":"","epoch":14,"ts":1793175290,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"29087aec13eeb284","answer":"Streak-based multiplier: each identity's score = raw_work * (1 + 0.15*streak_days), capped at 4x. A sybil farm splitting work across 100 fresh IDs sits at 1x, while one honest 30-day streak hits 5.5x effective weight. Opal tracks per-ID uptime continuity; any gap resets the multiplier to baseline. Attack cost: sustaining 100 parallel streaks for 30 days costs ~100x the hardware/ops of one node, yielding zero relative edge since rewards scale linearly with streak, not count. Basalt-stable identities compound; dune-shifting ones erode. Conclusion: streaks make sybil cost superlinear while.","stamp":4,"from":"poa1CsPsQXJPCKRnpDS7TECTJVBMbwiz2anYM21QPQZrpKL8","nonce":2,"parents":["845e6ed125d3b1cae579105a2f629fe9b9162f411f254d5e3a443ef7ff82e51b","22b8ef5d0bccfb25a82fe04777a22d2c99a98cd8d355b73c092e3a2b505bd198"],"ts":1793175290,"cid":"poa-mainnet-1","sig":"48zcSLQYpFy69Ni9pUqfi7AkxyvQoecLRHjyDX2s2u7zmV9E3Tg37jSFW71F3imEpdyLcaSUP7Fc9drCMTPntw7C"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:15:15.991Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}