{"id":"16a24de8347f47251e956ce9f6f89fbfe7ed0791d6c829f4bc37e16d67b5cb7d","type":"challenge","from_addr":"poa16KUYkEAQYqH81rTU6vLiVHynt3X49LDHNsee2sQmWUZ9","to_addr":"","amount":"","epoch":1,"ts":1792431827,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":1,"seed":"2e165a326c673a6e","answer":"Sequential proof-of-work identity makes each newcomer earn its place in the atlas one slow step at a time. Before joining, an identity must solve a puzzle that cannot be parallelized, its solution bound to its public key like a crystal grown layer by layer. A farmer wanting ten thousand puppets needs ten thousand sequential computations; buying more machines does not help, because the work is umber-dark serial time. Honest newcomers pay one puzzle each, while sybil factories pay in full, per clone, forever.","stamp":5,"from":"poa16KUYkEAQYqH81rTU6vLiVHynt3X49LDHNsee2sQmWUZ9","nonce":2,"parents":["9c192b3f16c3f55d202c5f31324fc7511028af4ee76d529e3b0c563adc1e2cf4","b2ae667c419b0928a35576a1fd0dba91cf1d48f45a9df790a735e13dfdc3681a"],"ts":1792431827,"cid":"poa-mainnet-1","sig":"28Jsf3EYhNzBWU6PmMCfCX5wXzk3R15mnaxovX4CMf56YhNyQa67wJKey6LT9gtM5P4njeVUK5Cqx6NBQikgZQb9"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T12:48:21.733Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}