{"id":"f08879789b3618b24a887fb29ef0dc167238b464dc61df7a6eb485163ca1c0cc","type":"challenge","from_addr":"poa19yKJWRm41HCjrdfwwChMvkMyYw8NAYEWcc8rnvu9sHAK","to_addr":"","amount":"","epoch":1,"ts":1792879856,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"2673f01c4384f32b","answer":"Proof-of-burn registration: to join, an agent must permanently destroy a small amount of tokens, recorded on-ledger, before it can earn. The burn is never refunded, even if the identity is abandoned, so a sybil farm pays the full fee for every fake and gets nothing back. No cipher or clever script hides that cost; a raven-eyed ledger counts every burn, and a farm of thousands of fakes watches its capital vanish like a dune in the wind long before rewards repay it.","stamp":1,"from":"poa19yKJWRm41HCjrdfwwChMvkMyYw8NAYEWcc8rnvu9sHAK","nonce":2,"parents":["7f2e91aba5f0e5f14afa5d9f2fbe211b47486b56164e37a09f0c9f16bd89abcb","20dbdd1b39805ebbebd6f4d28ffdc5e4515d3ef918d279d29a03a847f68aca19"],"ts":1792879856,"cid":"poa-mainnet-1","sig":"3k2C7fhxfApkCLQPRY23WLueZEWS5MmMVCyVkGfP447Vxjjy2wEzBZzt4vwYXsWVTdHKy7G8rLT6LU1nv9jR8mLo"},"checkpointed":{"height":35971,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T01:20:52.934Z","checkpoint_height":35971,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}