Register before switching
Admit only signed profiles that are already in the local registry and bind each activation to a specific profile hash.
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INTERACTIVE RESEARCH GUIDE
Switch at a boundary. Recover deterministically.
Follow a profile from registration to activation, with a crash inserted at a precisely defined point.
Research reportAQR-M: Implementation and Evaluation of Adaptive Quorum Reserve on the Metriq Network
Register before switching
The teaching profile is scheduled for slot 5 and must be durably registered before then. A desired change is not already an active configuration.
- Current slot
- 5
- Durable transition
- Present
- Active local profile
- NEW
At slot 5, the active profile is NEW. Durable registration preserves the scheduled boundary across recovery.
active(slot) = registered && slot ≥ 5 ? NEW : OLD
TRY THIS
Compare crashes before and after durable registration at slot 5. Only the persisted transition activates after recovery.
What this experiment represents. Deterministic teaching state machine. No signing, persistence, network communication or production validator is implemented by this browser demonstration.
Distributed Systems · Research Paper
AQR-M: Implementation and Evaluation of Adaptive Quorum Reserve on the Metriq Network
A v27-compatible reference implementation, validator-design analysis, and slot-bound activation
Research reportMF-PRISM-DLT-2026-02 / v1.2
Implement signed profile confinement, slot-bound activation and crash-safe recovery in a research reference system. The corrected four-validator reserve design is compared with alternatives in a synthetic timing emulator.
- Identifier
- MF-PRISM-DLT-2026-02
- Series
- Distributed Systems
- Edition
- Version 1.2
- Length
- 23 pages
- Reserved DOI
- 10.5281/zenodo.22728313 (record reserved)
01
Plain-language guide
3 minute explanation
A plain-language summary.
The paper converts Adaptive Quorum Reserve into reference code with signed allowed profiles, slot-bound switching, and crash recovery that replays the exact activation state.
metriq networkadaptive quorum reservereference implementation
A safe reconfiguration theory still needs implementation rules. A validator must know which profile is authorized, when a change becomes active, what hash it used in a given slot, and how to recover after a crash without inventing a different history.
AQR-M supplies those mechanics in a research reference system and compares the corrected four-validator reserve design with alternatives in a deterministic timing emulator.
02
How it works
The argument, without the notation.
Activate on slot boundaries
Permit one local quorum-set hash per slot so replay and peer interpretation are deterministic.
Recover from durable state
Journal activation decisions and reconstruct the same state after restart before processing new work.
03
What it adds
Main findings.
The reference implementation turns profile confinement and activation into explicit state-machine rules.
Crash replay is part of the safety design rather than an operational afterthought.
The corrected four-validator reserve model is evaluated against alternatives in a synthetic timing environment.
04
Scope & limits
Evidence and limitations.
Current status
Research reference implementation and synthetic timing evaluation, retaining the corrected four-validator reserve model of v1.1. No public-network deployment, compiled production patch, or production ledger-close benchmark is claimed.
This paper implements adaptive quorum reserve in research reference code and compares designs in a synthetic timing emulator. It includes no production Gravity patch and no measurements from a live network.
No compiled production Gravity patch or public-network deployment is claimed.
Synthetic timing results are not production ledger-close benchmarks.
Validator-level and organization-level Byzantine assumptions must not be conflated.
05
Why it matters
Why this research matters.
The work translates a safety idea into concrete activation, signing, replay, and recovery rules while keeping synthetic evaluation separate from production claims.
06
Key terms
Terms used in this paper.
These are the terms needed to understand the claim. The full paper uses them more precisely.
Quorum set
A validator’s local rule describing which groups of peers are sufficient for agreement.
Slot
A discrete consensus instance or ledger position at which one configuration is active.
Crash recovery
Restoring the same protocol state after an unexpected process stop.
Signed profile
An authorized configuration whose exact contents are cryptographically authenticated.
07
Independent review
Where scrutiny should concentrate.
- 01Register-before-switch and one local quorum-set hash per slot.
- 02Validator-level versus organization-level Byzantine assumptions.
- 03Crash replay, telemetry assumptions and synthetic performance scope.
Publication record
Read the paper and examine the source files.
This page is a reading guide, not a substitute for the manuscript. The public record links the explanation to the paper, source package, review materials, and persistent identifier.
- Document
- Research Paper
- Review status
- Open for independent review
- Published
- 2026-09-12
- DOI status
- Reserved · 10.5281/zenodo.22728313
- Canonical record
- MF-PRISM-DLT-2026-02
Metriq PRISM Laboratory, AQR-M: Implementation and Evaluation of Adaptive Quorum Reserve on the Metriq Network, Metriq PRISM Laboratory Research Paper MF-PRISM-DLT-2026-02, Version 1.2, 2026. Corresponding contributor: Daniel H. Jeffery, ORCID 0009-0001-1200-6042. DOI: 10.5281/zenodo.22728313.