Merkle root hash of events in [sequenceFrom, sequenceTo].
First event sequence in this anchor.
Last event sequence in this anchor.
Number of events in this anchor.
ISO 8601 timestamp.
Ed25519 signature of the Merkle root.
Optional externalOptional external reference (IPFS CID, tx hash, etc.).
Optional providerResults from anchor providers (when multiple are composed).
Unique anchor ID.