체크포인트
체크포인트
Network & Protocol
4개 참조
동기화 비용을 줄이거나 특정 장거리 공격을 방어하는 데 사용되는 체인의 고정 참조 지점입니다. 체크포인트는 하드코딩되거나 사회적으로 조정될 수 있습니다.
4개 백서 섹션에 등장
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...