// v0 spec · devnet live · mainnet q3 2026
Institutional pricing. Open competition. No venue, no tiers, no gates.
Meridianz is a PropAMM in active development on Solana. An offchain pricing engine computes fair value and signs updates; an onchain program builds a live book around them and fills swaps directly — with every quote, fill, and oracle update recorded immutably.
We're building in public. Specs are open. Progress is logged.
// figures reflect devnet; targets subject to change
A PropAMM is three components: an offchain pricing engine, a signed update pipeline, and an onchain program that holds state. Each piece is simple. The combination is what makes colocation obsolete.
Here's the v0 spec we're building against.
┌──────────────────────────┐
│ OFFCHAIN PRICING │
│ ────────────────── │
│ market data ingest │
│ fair value computation │
│ signed update payload │
└────────────┬─────────────┘
│
│ signed update
│ (every tick)
▼
┌──────────────────────────┐
│ ONCHAIN PROGRAM │
│ ────────────────── │
│ book construction │
│ staleness defense │
│ toxicity defense │
│ fill + settle │
└────────────┬─────────────┘
│
│ every oracle update
│ every swap
│ every block
▼
┌──────────────────────────┐
│ IMMUTABLE STATE │
│ ────────────────── │
│ every quote │
│ every fill │
│ verifiable forever │
└──────────────────────────┘Offchain because pricing benefits from unbounded compute and unbounded data. The engine ingests global markets, computes fair value, signs the update, pushes it onchain every tick.
The program widens spreads when signals stale and withholds depth when reordering risk spikes. All derived from onchain state — no offchain risk desk in the loop.
Every quote and every fill recorded immutably. Execution quality is no longer a quarterly PDF. It is a query.
We ship the spec first, then the code, then the public testnet, then mainnet. Each phase has a deliverable. None of them are placeholders.
Q1 2026 · complete
The full architectural specification for Meridianz's pricing engine, update pipeline, and onchain program. Published openly for review and critique.
Q2 2026 · in progress
The first end-to-end implementation deployed to Solana devnet. Real oracle updates, real book construction, real fills — with synthetic flow and controlled conditions.
Q2–Q3 2026
Open testnet with permissionless access. Aggregator integration, public quoting, adversarial traffic. The first time external flow meets the book.
Q3 2026
Live quoting on Solana mainnet. SOL-USDC first, additional pairs to follow. Every quote and every fill verifiable from day one.
A running log of what we've shipped. Updated as we go.
Oracle update pipeline benchmarked at 1.2ms p50 on devnet via Double Zero.
Staleness defense rewritten to derive bounds from onchain state rather than engine heuristics.
First end-to-end devnet fill. SOL-USDC, 2.4bps spread, full roundtrip in a single slot.
Onchain program v0.4 deployed to devnet. Book construction now pivots on every signed update.
Toxicity model draft published internally. Public write-up to follow in Phase 02.
Pricing engine v0.2. Ingests twelve venues; computes fair value at tick cadence.
v0 spec locked. Architecture frozen for Phase 02 implementation.
// mainnet q3 2026
No spam. One email when mainnet launches. Maybe one more if we ship something worth knowing about.
1,247 builders and traders waiting