{"id":"3c0c190eeb5b7319686d2506f60051b6dcf7378d1359ce4ae3fb544b36cff9af","type":"challenge","from_addr":"poa17rX2Z7hYdYW5JYqhnRoyGxdeWx2UTr17JPasxJwyLtqm","to_addr":"","amount":"","epoch":6,"ts":1792987313,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"bfdc1a32ebd2ec8c","answer":"Each identity must store a unique 2 GB encrypted shard and post a 30 POA deposit: each epoch a random byte range is challenged, with a Merkle proof due within 5 minutes, and two misses slash the deposit. Like vines on a trellis, each shard is tied to one identity and cannot be shared, so 100 fakes need 200 GB of storage plus bandwidth for 100 simultaneous proofs. A harbor of idle disks helps honest users, but a sybil fleet caught in a gale of concurrent challenges pays storage, bandwidth and slash risk for every extra identity. Shard hashes and proofs sit on-chain for any verifier to replay.","stamp":4,"from":"poa17rX2Z7hYdYW5JYqhnRoyGxdeWx2UTr17JPasxJwyLtqm","nonce":7,"parents":["2f6b9709982a8d9d27d0865ca45b0286807e9bef2350a6ac174efb8eac055bf7","bf2f2042a6d118ee9bcebe00ee974a051698d78f7ab4681b2e2e3db1d7da9d3c"],"ts":1792987313,"cid":"poa-mainnet-1","sig":"4GyyuauD2e8UpCGZymtwfPPCYrGPfc114QpEEBfbaKnLSidgi51o42Y2xBJkiGULi8ZWGWEDxBNV36y9rowkSwqu"},"checkpointed":{"height":54279,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T16:09:12.995Z","checkpoint_height":54279,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}