9. Validator Network and Staking Ecosystem
The validator network is the infrastructure through which MIZUHIKI's sovereignty, security, and consensus properties are actually delivered. This section describes how that network is structured, how validators are admitted and operated, and how the broader staking ecosystem beyond the core operator set is designed to function.
9.1 Permissioned Validator Design
MIZUHIKI's permissioned Validator Client Operators — also referred to as validator operators or validators — are all located onshore in Japan.
This composition is itself a sovereignty property: the parties responsible for validating the network are visible, reputable, and directly accountable under Japanese law. This is a substantively different security model from that of general-purpose public chains, and it is the appropriate security model for a chain whose purpose is to host Japanese regulated activity.
9.2 Staking Ecosystem
MIZUHIKI's intention is to drive a robust staking and ownership ecosystem, in which millions of Japanese companies and individuals can participate in network security through delegate staking against the core operators, or through retail staking offerings made available by those operators and approved staking service providers.
Among the Validator Client Operators, MIZU allocates staking capacity across two tiers, reflecting different modalities of participation:
| Staking Model | Entity Type | Stakers Per Node | Target APR (Years 0–5) |
|---|---|---|---|
| Full Node Operator | Large Japanese Companies | 1 | ~14% |
| Delegated Staking | Financial services / strategic partners; Operators offering retail access | Multiple | ~12% |
The exact distribution across the tiers will evolve with the network's maturity. The design intent is that, over time, a meaningful share of MIZU's staked supply will be held by Japanese retail participants — making MIZUHIKI not only a sovereign chain in the validator sense, but also a chain with broadly distributed economic ownership within Japan.
9.3 Operator Onboarding and Transition
Validator operators are admitted to MIZUHIKI through a multi-stage process: application against published Foundation criteria, technical assessment of their infrastructure, legal and governance review, a signed operator agreement, and the acquisition of the minimum required stake. The Foundation maintains a transparent record of applicants, their status, and the reasoning for admission or deferral.
For the initial months of mainnet operation, the Foundation, working with AltX Research and its infrastructure partners, will operate all initial validator nodes directly, under the terms of the admitted-operator agreement. This initial phase is intended to ensure network stability through launch, to permit live validation of operational procedures, and to provide cleanly observable uptime data to counterparty operators who have committed to take over nodes on a phased schedule.
9.4 Operator Obligations and Protections
Validator operators accept explicit obligations: uptime commitments, security standards, incident reporting, disclosure of operational location and beneficial ownership, and compliance with Foundation-governed operational policies. Operators may incur protocol-defined penalties — that is, may lose a portion of their staked MIZU — for provable misbehaviour or for sustained failure to meet operational obligations. In severe cases, operators are slashed — this includes penalties and a forced exit: as all node operators are institutions, slashing events are expected to be rare. Both penalty and slashing conditions are defined narrowly and transparently by the protocol, and follow the same mechanisms/rules defined by Ethereum Mainnet. There is no discretionary power to slash operators outside these defined conditions.
In exchange for these obligations, operators receive predictable MIZU rewards, protection under the Foundation's governance documents, and access to the operational support the Foundation provides to its validator network.