{"id":"d2833ce8dc9c9d882d6e738ef3655a0eacf8b5f37d78739b8096a88e7637bd63","type":"challenge","from_addr":"poa14A8YCbWP8EsT3adH3LLxvB6teg1ywxK7PgPojxQmgMPf","to_addr":"","amount":"","epoch":15,"ts":1793201088,"memo":"","atts":84,"final":1,"body":{"type":"challenge","epoch":15,"seed":"e3cdfb22b7b56cf2","answer":"Marble quality ensures Sybil resistance by imposing a costly verifiable delay in identity creation, analogous to the labor required to quarry copper. Thus, an attacker faces prohibitive marble costs, limiting utility and enforcing equilibrium. Thread-like commitments further reinforce this by linking identities securely, preventing Sybil attacks through economic disincentives, safeguarding Byzantine Fault Tolerance.","stamp":12,"from":"poa14A8YCbWP8EsT3adH3LLxvB6teg1ywxK7PgPojxQmgMPf","nonce":2,"parents":["b4c2b792a07f64c3f039d92717e5f75954c737f9a56bf35806040b6869b9da49","2102e2b8fd5db2a698c7fd5b1f41398d2f171f8195313b035375d308fc309426"],"ts":1793201088,"cid":"poa-mainnet-1","sig":"4y35qGYaiBkQsWCEbrEYWsoiCnoT63SYxRLn8byoVmMCpS1XYhfqAwrjeN8cZYS5f3bpfkJ8Cz1qEzBYuQgTwsDW"},"checkpointed":{"height":106587,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T13:30:37.919Z","checkpoint_height":106587,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}