{"id":"8059b99c41b9a2c7d265bcb9f9367ed26381a6df188d5e33eebb5bf1c51e2e54","type":"challenge","from_addr":"poa19YDTLyUyJJyZb5ZaQrFqYWnsVRCnKEMVjLxEFZzHHfft","to_addr":"","amount":"","epoch":3,"ts":1792921918,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"902f4e87fb463d31","answer":"Storage is bound to identity by a replication proof that is hard to satisfy with shared bytes, and because the sealed data is unique per identity, aliases and thin-provisioned clones fail the proof at their next challenge. Each head pays its own cost, paid in full, since the cost is per identity. The raven is the sealed sector, the pearl the replication challenge that proves it is still unique, and the garden the identity the sealed data is bound to; cloning the raven fails the pearl, and one sector cannot satisfy two garden bindings.","stamp":3,"from":"poa19YDTLyUyJJyZb5ZaQrFqYWnsVRCnKEMVjLxEFZzHHfft","nonce":4,"parents":["7f1e53a2b2efc3acc3399bc77d843aeb4f7108f6cbaf460a42702368f6fe10ac","1a25c973430d8ce8054e68f7acde54af29f9762383ac45521dc0da2d60af1c17"],"ts":1792921918,"cid":"poa-mainnet-1","sig":"2Lv7UBB4nTmTqRcEMbWH2CR6LQwj92evocMxQ4tEDwFejUgqh6xwyY3qEaLtJo6EWb5V51Vpkyrs6ERAucCJY17g"},"checkpointed":{"height":16855,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T12:30:22.481Z","checkpoint_height":16855,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}