L3RS-1 SDK — Developer Documentation

Layer-3 Regulated Asset Standard · v1.0.0 · CROSSCHAIN Conformance

The L3RS-1 SDK is a multi-language reference implementation of the L3RS-1 specification. All implementations are pure deterministic libraries — no transport, no ledger coupling, zero runtime dependencies.

Quick Start

Language	Install	Docs
TypeScript	npm install @l3rs/reference-impl	API Reference
Python	pip install l3rs1-sdk	API Reference
Go	go get github.com/L3RS-Foundation/L3RS-1/packages/go	API Reference
Rust	cargo add l3rs1-sdk	API Reference
Java	foundation.l3rs1:l3rs1-sdk:1.0.0	API Reference
Solidity	npm install @l3rs/contracts	API Reference

Conformance Class

All implementations target CROSSCHAIN — the highest conformance class, enforcing all invariants I₁–I₁₁ across §2–§13 of the specification.

Canonical Test Vector

All six implementations must produce this output for the §2.2 Asset_ID construction:

Input:
  issuer_pubkey: 0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
  timestamp:     1740355200
  nonce:         0000000000000001

Output (Asset_ID):
  593f0dfb3da2fb8e8e21059e26f4a1875e9059a6d9d634e3065541e6c193506a
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Architecture

Every implementation is a pure function library — no I/O, no network, no ledger coupling:

┌─────────────────────────────────────────┐
│         Your ledger / platform          │
├─────────────────────────────────────────┤
│         L3RS-1 SDK (this repo)          │
│  types · state machine · compliance     │
│  identity · governance · settlement     │
│  cross-chain CID · canonical hashing    │
├─────────────────────────────────────────┤
│      SHA-256 (stdlib in all langs)      │
└─────────────────────────────────────────┘
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Source

github.com/L3RS-Foundation/L3RS-1