On-Chain Overview

The AMP Solana program and on-chain state.

AMP's on-chain component is a Solana program (Anchor-compatible) that manages channel state, token custody, and settlement verification. All financial state is stored on-chain as PDAs. Off-chain components (SDKs, metering) interact with this program.

Program

The amp-channel program handles 6 instructions: open, top-up, settle, close, delegate, and chain. Deployed to Solana devnet.

Program details →

Channel State

Each channel is a PDA with 24 fields tracking balances, settlement timing, delegation, and chain state.

Channel state layout →

Instructions

Six instructions covering the full channel lifecycle, plus delegation and chaining.

Instruction reference →

Architecture

Client SDK ←→ Server Middleware ←→ AMP Program ←→ SPL Token Vault
     │              │                    │
  off-chain      off-chain           on-chain
  (signing)      (metering)         (state + custody)

On-chain transactions only occur at channel open, settlement, and close. All consumption is off-chain.