Miden node RPC

Contains the code defining the Miden node's RPC component. This component serves the user-facing gRPC methods used to submit transactions and sync with the state of the network.

This is the only set of node RPC methods intended to be publicly available.

For more information on the installation and operation of this component, please see the node's readme.

API overview

The full gRPC method definitions can be found in the rpc-proto crate.

• CheckNullifiers
• CheckNullifiersByPrefix
• GetAccountDetails
• GetAccountProofs
• GetAccountStateDelta
• GetBlockByNumber
• GetBlockHeaderByNumber
• GetNotesById
• SubmitProvenTransaction
• SyncNotes
• SyncState

CheckNullifiers

Returns a nullifier proof for each of the requested nullifiers.

CheckNullifiersByPrefix

Returns a list of nullifiers recorded in the node that match the specified prefixes and were created at or after the given block height.

Only 16-bit prefixes are supported at this time.

GetAccountDetails

Returns the latest state of an account with the specified ID.

GetAccountProofs

Returns the latest state proofs of the specified accounts.

GetAccountStateDelta

Returns delta of the account states in the range from from_block_num (exclusive) to to_block_num (inclusive).

GetBlockByNumber

Returns raw block data for the specified block number.

GetBlockHeaderByNumber

Retrieves block header by given block number. Optionally, it also returns the MMR path and current chain length to authenticate the block's inclusion.

GetNotesById

Returns a list of notes matching the provided note IDs.

SubmitProvenTransaction

Submits proven transaction to the Miden network.

SyncNotes

Returns info which can be used by the client to sync up to the tip of chain for the notes they are interested in.

Client specifies the note_tags they are interested in, and the block height from which to search for new for matching notes for. The request will then return the next block containing any note matching the provided tags.

The response includes each note's metadata and inclusion proof.

A basic note sync can be implemented by repeatedly requesting the previous response's block until reaching the tip of the chain.

SyncState

Returns info which can be used by the client to sync up to the latest state of the chain for the objects (accounts and notes) the client is interested in.

This request returns the next block containing requested data. It also returns chain_tip which is the latest block number in the chain. Client is expected to repeat these requests in a loop until response.block_header.block_num == response.chain_tip, at which point the client is fully synchronized with the chain.

Each request also returns info about new notes, accounts, etc. created. It also returns Chain MMR delta that can be used to update the state of Chain MMR. This includes both chain MMR peaks and chain MMR nodes.

For preserving some degree of privacy, note tags contain only high part of hashes. Thus, returned data contains excessive notes, client can make additional filtering of that data on its side.

License

This project is MIT licensed.