Crate store_qmdb 

Store-backed bridge for Commonware authenticated storage proofs.

The crate currently supports multiple Commonware authenticated backends:

• ordered QMDB (qmdb::any and qmdb::current::ordered)
• immutable (qmdb::immutable)
• keyless (qmdb::keyless)

Writers upload exact Commonware operations into the Exoware store, then publish an externally authoritative watermark once the uploaded prefix is complete.

Uploads may still happen concurrently and out of order. Current batch-boundary state may also be uploaded ahead of publication. Only watermark publication is monotonic: publishing watermark W means the whole contiguous prefix [0, W] is available and may now be trusted by readers.

Readers fence historical queries against that low watermark. Historical proofs use the global ops-MMR nodes stored by Position.

Current ordered proofs use versioned current-state deltas:

• bitmap chunk rows
• grafted-node rows

Those rows are versioned by uploaded batch boundary Location, not by the final published watermark. That is what preserves lower-boundary current proofs below a later published low watermark.

Re-exports

pub use error::QmdbError;

pub use proof::AuthenticatedOperationRangeProof;

pub use proof::CurrentOperationRangeProofResult;

pub use proof::KeyValueProofResult;

pub use proof::MultiProofResult;

pub use proof::OperationRangeProof;

pub use proof::UnorderedOperationRangeProof;

pub use proof::VariantOperationRangeProof;

pub use proof::VariantRoot;

Modules

error

proof

prune

Structs

CurrentBoundaryState

Current-state rows for one uploaded batch boundary.

ImmutableClient

KeylessClient

OrderedClient

UnorderedClient

UploadReceipt

Metadata returned after uploading one batch of QMDB operations.

VersionedValue

Historical value resolved for one logical key.

Enums

QmdbVariant

QMDB proof/root variant supported by exoware-qmdb.

Constants

MAX_OPERATION_SIZE

Maximum encoded operation size for QMDB key and value payloads (u16 length on the wire).