Struct WitnessedCheckpoint 

pub struct WitnessedCheckpoint {
    pub log_id: String,
    pub tree_size: u64,
    pub root_hash: String,
    pub timestamp: DateTime<Utc>,
}

The identity-bearing subset of the RFC-ACDP-0012 §6 checkpoint the witness observed: {log_id, tree_size, root_hash, timestamp}, copied verbatim from the verified checkpoint (RFC-ACDP-0015 §4).

CLOSED schema (additionalProperties: false): the registry’s checkpoint_version and signature are deliberately NOT restated — the consumer verifies the registry checkpoint signature independently (RFC-ACDP-0012 §9.3). Every member is signed, so an unknown member changes the preimage and is rejected at parse time.

Fields

log_id: String

The observed log instantiation identifier ("<registry_did>/log/<instance>"), copied verbatim from the checkpoint the witness verified.

tree_size: u64

The observed checkpoint’s tree_size.

root_hash: String

The observed checkpoint’s root_hash ("sha256:<hex>"). Together with log_id and tree_size this is the tuple the N-witnessed count is computed over (RFC-ACDP-0015 §8).

timestamp: DateTime<Utc>

The registry-claimed checkpoint timestamp (the RFC-ACDP-0012 §6 checkpoint.timestamp), copied verbatim; canonical millisecond-precision RFC 3339 UTC. Registry-asserted — the witness does NOT vouch for it (witnessed_at is what the witness attests, RFC-ACDP-0015 §4).

Implementations

impl WitnessedCheckpoint

pub fn from_checkpoint(checkpoint: &LogCheckpoint) -> Self

Copy the identity-bearing subset out of a verified checkpoint (RFC-ACDP-0015 §7 step 3 — {log_id, tree_size, root_hash, timestamp} verbatim).

Trait Implementations

impl Clone for WitnessedCheckpoint

fn clone(&self) -> WitnessedCheckpoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WitnessedCheckpoint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WitnessedCheckpoint

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WitnessedCheckpoint

impl PartialEq for WitnessedCheckpoint

fn eq(&self, other: &WitnessedCheckpoint) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for WitnessedCheckpoint

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WitnessedCheckpoint