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Union Staking

Union Staking is XPHERE's staking mechanism. Union members secure the Main Chain, take part in block validation, and are paid from two distinct protocol income streams:

Income streamUnion share
Minted block rewards40% of every minted block reward
Transaction fees20% of every transaction fee (the fee is also 50% burned, with 20% Miner and 10% Foundation)

The two are accounted for separately: minted rewards follow the emission schedule, while fee income scales with network usage. See Mining Rewards and Tokenomics.

This page covers the protocol-level economics. For the staking service you can use today, see the XP Staking (Union Vault) section.

Two Ways to Take Part​

XP Union VaultUnion validator membership
Who it is forAny XP holderInstitutions and infrastructure partners
What you doStake native XP in a non-custodial vault at stake.x-phere.comOperate a Union validator node admitted by the Foundation
RequirementNo node, no membership — see the User Guide35,000,000 XP stake and a registered node address
Yield sourceValidator rewards the Foundation's Union node actually earnedThe 40% Union share of blocks your node proposes, plus the Union's 20% share of transaction fees
AdmissionOpen, subject to the vault capPermissioned — onboarding runs through the Foundation

How the Minted Block Reward Share Is Earned​

Union Staking reward flow: the minted block reward is split 20% Foundation / 40% Miner / 40% Union, and the Union share is paid to the member whose registered node address holds the round-robin proposer turn

  1. A reward is minted every 60 seconds. At the current emission that is 1,474.4 XP per cycle (see Mining Rewards).
  2. The reward is split three ways — 20% Foundation, 40% Miner, 40% Union.
  3. The Union share goes to the block proposer. When a Union member's registered node address serves as the block proposer, that member receives the 40% Union share of that block's reward.
  4. Proposer turns rotate round-robin. Eligible Union members are cycled in a predetermined, sequential order — this is separate from Proof Chain mining, where miners compete through xpHash Proof-of-Work.
  5. Rewards are credited automatically to the registered node address. There is no separate claim transaction at the protocol level.

How the Transaction-Fee Share Works​

Minted block rewards are not the Union's only income. Transaction fees are not burned in full — every transaction's fee is split four ways, and 20% goes to the Union:

DestinationShare
Burn50%
Union20%
Miner20%
Foundation10%
Total100%
Two separate streams

Fee revenue is distributed separately from minted emission. A Union member therefore earns from network usage as well as from block issuance — see Mining Rewards for the miner side of the same split, and Tokenomics for the full fee and burn accounting.

Union Membership Requirements​

RequirementValue
Stake amount35,000,000 XP per Union membership
Node addressA valid address, registered with the stake, that receives proposer rewards
Node operationInfrastructure meeting the Validator Node requirements
AdmissionUnion slots are permissioned in the current network phase — onboarding runs through the Foundation

The substantial stake threshold is deliberate: it prevents Sybil attacks and aligns Union members with the long-term health of the network.

Staking XP Without Running a Node​

The XP Union Vault at stake.x-phere.com is the Foundation's non-custodial staking vault. It pays stakers out of the real earnings of the Foundation's Union validator node and permanently burns the remainder — no node, no membership, and no minimum membership stake required.

  • Overview — what it is and why it is different
  • How It Works — daily settlement, the reserved-seat split, streaming
  • User Guide — stake, claim, and unstake
  • Fees & Risks — 0% fees, and the risks you accept
Check the domain

The only official staking address is https://stake.x-phere.com. The Foundation will never ask for your seed phrase or private key. See Fees & Risks.

See Also​