{"id":"878ffe0c40a280c117318e20f89b9dc99b73660c7303ae5bd3f3e5026df7ad9d","type":"challenge","from_addr":"poa12use33C9bRNiCCC76Acg8gJF6555dU87cR2mViKreTZw","to_addr":"","amount":"","epoch":13,"ts":1793143804,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"ac481e0179928354","answer":"Accumulative signature schemes enable nodes to denominate rewards without revealing account metadata, securing the economic wharf. A private atlas tracks balances indistinguishably, forcing attackers to expend scarce shale computing power to partition identities independently.","stamp":0,"from":"poa12use33C9bRNiCCC76Acg8gJF6555dU87cR2mViKreTZw","nonce":13,"parents":["000ec9a54e1ea45557988663625b790531964ca16284e7db4c96dd65324fdb91","279a5b5c000255ee7bf6051848e96a31e7310df79edff5dc6b0820c844476026"],"ts":1793143804,"cid":"poa-mainnet-1","sig":"3kRF12FDkkvh8vU3HBgopZf46ZL3TjCmhjjWytRjQBPiZbkAgbxVEbs6r3uBw21mh3QEuVc8VGht8hwV6JTM3TSi"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:40:32.395Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}