Struct Checkpoint 

pub struct Checkpoint {
    pub root: String,
    pub count: u64,
    pub ts_ms: u64,
    pub pubkey_hex: String,
    pub sig_b64: String,
}

A signed, externally-anchorable commitment to the ledger’s state at a moment: the head root over the first count entries, timestamped and signed by the ledger key. It leaks no entry content — only a hash, a count, and a signature — so it is safe to publish, hand to a notary, or submit to a SCITT transparency service. Because the log is append-only, the root over the first count entries is fixed forever; an external party holding a checkpoint can re-derive that root from the file and, if it disagrees, prove the operator rewrote history — the operator-INDEPENDENT verification a log inside the operator’s own stack lacks.

Fields

root: String

count: u64

ts_ms: u64

pubkey_hex: String

Hex of the Ed25519 ledger key that signed both the entries and this commitment.

sig_b64: String

Ed25519 signature over the canonical commitment bytes.

Trait Implementations

impl Clone for Checkpoint

fn clone(&self) -> Checkpoint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Checkpoint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Checkpoint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Checkpoint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.