Protocol Architecture

TROPTIONS Layer 0 Fabric

The coordination fabric between the Legacy estate application layer and the Troptions-L1 Rust settlement network. Layer 0 routes namespace events, wallet maps, x402 metering, cross-chain asset references, and proof anchoring.

Coordination Fabric Wired into Legacy

Layer Architecture

Where Layer 0 sits

Legacy Vault App

Estate workflows · namespaces · exports · downloads

↓ calls into ↓

TROPTIONS Layer 0 Fabric

Coordination · x402 · wallet map · cross-chain routing · proof anchoring

↓ coordinates with ↓

Troptions-L1 / TSN Rust Layer 1

Settlement scaffold · consensus · stablecoin runtime · bridges · compliance

↓ bridges to ↓

External Rails

XRPL · Stellar · EVM · Solana · stablecoin networks

Coordination Scope

What Layer 0 coordinates

.legacy namespace registry

Namespace identity, slug resolution, IPFS CID binding, state coordination

Vault event proofs

Guardian attestations, executor verification, release status — all anchored as Layer 0 proof records

Cross-chain asset references

Routes asset references across XRPL, Stellar, EVM, and Solana via adapter crates

x402 metered service events

Every TROPTIONS x402 service call is metered and logged as a Layer 0 coordination event

Executor & guardian attestations

Signed executor packets, guardian quorum records, and attorney/notary attestations

Stablecoin asset references

USDC, USDT, DAI, EURC, USDF, FTHX, FTHG references routed through Layer 0 asset model

Wallet identity mappings

Owner, executor, beneficiary wallet maps — TROPTIONS, XRPL, Stellar, EVM, Solana

Release status events

Multi-condition release gate status: waiting period, death cert, guardian quorum, court order

Audit anchors

Every vault action produces a tamper-evident Layer 0 audit anchor for legal proceedings

Validator readiness

Layer 0 surfaces TSN validator readiness state from the Troptions-L1 Rust network below

Key Distinction

Layer 0 vs Layer 1

Layer 0 — Fabric

Coordination layer

Routes namespace state and events
Maps wallet identities across chains
Meters x402 service calls
Anchors proof records
Does not execute settlement directly

Layer 1 — Settlement

Rust settlement network scaffold

24 Rust crates (TSN workspace)
Consensus, runtime, state, crypto
Stablecoin runtime (GENIUS Act gated)
XRPL + Stellar bridge adapters
Simulation-only until validators live