tir

The canonical home for the Transaction Intermediate Representation (TIR) — both the specification and the reference Rust implementation.

A TIR artefact is a machine-readable, deterministic template for a transaction. It encapsulates the structural and semantic shape of a transaction without binding it to specific input UTxOs or argument values; an on-chain transaction is produced by applying arguments to a TIR template and resolving its inputs against the current chain state.

TIR is serialised as CBOR and travels across the wire inside the TirEnvelope shape referenced by the TII and TRP specs.

Layout

• crates/tx3-tir/ — the reference implementation (tx3-tir on crates.io). Modules: compile, encoding, model, reduce.
• specs/ — the formal TIR wire-format specs (see specs/README.md).

Supported encoding versions

• v1beta0 — current.
• v1alpha8 — deprecated.

License

Apache-2.0. See LICENSE.