Ponto de verificação
Ponto de verificação
Network & Protocol
4 referências
Um ponto de referência fixo na cadeia usado para reduzir o custo de sincronização ou defender-se contra certos ataques de longo alcance. Os pontos de verificação podem ser codificados ou coordenados socialmente.
Aparece em 4 seções de whitepapers
Introduction
...d at that specific position in the chain by recomputing the hashes from a known checkpoint. Because SHA-256 is cheap to verify in parallel but expensive to generate seque...
Network Design
...mits a transaction, it includes a recent blockhash (a reference to a recent PoH checkpoint) that serves as a transaction lifetime marker. The transaction is valid only fo...
Proof of History
...cation (parallel, multi-core):
Core 1: hash_0 → ... → hash_999 ✓ matches checkpoint
Core 2: hash_1000 → ... → hash_1999 ✓ matches checkpoint
Core 3: hash_2000 ...
Proof of History Sequence
...hash_205) --
...
300 SHA256(hash_299) -- (checkpoint)
```
Multiple data items can be inserted at the same PoH index by hashing them...