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@exowarexyz/qmdb

v2026.9.0

Published

Browser client for the ordered Exoware QMDB proof API.

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Links

Git

Maintainers

patrickogradyxyzpatrickogradyxyz

Keywords

Readme

@exowarexyz/qmdb

Browser client for the QMDB ConnectRPC proof API.

This package:

  • calls qmdb.v1.KeyLookupService, qmdb.v1.OrderedKeyRangeService, qmdb.v1.OperationLogService, and qmdb.v1.CurrentOperationService over Connect-Web
  • verifies get, getMany, getRange, getOperationRange, getCurrentOperationRange, and subscribe proofs for MMR or MMB through a small WASM module
  • exposes QmdbOperationLogClient for backend-agnostic historical operation-log proofs, including fixed keyless appends and fixed unordered updates
  • supports exact, prefix, and regex subscription matchers

Proof verification is root-driven: callers supply the current/global root for current-boundary-backed services. Operation-log-only backends are a separate contract and use a trusted operation-log root. The client is configured with a Merkle family (mmr by default) and uses that for all proof decoding and verification.

Operation range verification binds the exact requested start, count, and tip. Key ranges enforce linear ordering, bounds, and pagination. Absolute positions use bigint. Batch limits and WASM byte-size arguments must fit their unsigned 32-bit representation.

Subscription decoding checks internal proof consistency. Compare the returned root with an independently trusted root for the frame tip before using its operations. A server-provided root is not a trust anchor. sha256 and blake3 provide cryptographic hashing. crc32c is a checksum mode for accidental corruption and is unsuitable for authenticating an untrusted proof provider.