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The RealValidator Team Editorial team

The Solana Foundation Delegation Program's infrastructure rules took effect on May 1, 2026, introducing hard caps on ASN concentration (<25% of network stake), data-center concentration (≤15%), and transaction processing unit (TPU) compliance (FIFO or priority-fee-ordered scheduling within 50ms windows; no TPU censorship; shred release every 50ms). As of this snapshot, the rules are 16 days into active enforcement, with several wiki-directory validators above the ASN threshold.

This tracker records the rule activation, observed validator responses, and the ongoing enforcement pattern as operators either migrate hosting to compliant ASNs or accept loss of SFDP residual delegation and stake-matching eligibility.

Current state (as of 2026-05-16)

  • Rule activation date: May 1, 2026 — rules currently in active enforcement.
  • Days in active enforcement: 16.
  • ASN concentration cap: <25% of total network stake on a single Autonomous System Number.
  • Data center concentration cap: ≤15% of total network stake in a single facility.
  • TPU rules: FIFO or priority-fee-ordered scheduling within 50ms windows; shred release every 50ms or per coalesced erasure batch; no TPU censorship; no TPU delay beyond 50ms.
  • Most concentrated ASN in network: TeraSwitch AS20326 at approximately 29% of total Solana network stake (per Stakewiz asn_concentration field, epoch 971; cross-referenced against Validators.app ASN tracker).
  • Number of wiki-directory validators above the ASN cap: 4 (all on TeraSwitch AS20326).
  • Canonical source: solana.org/delegation-criteria — Foundation-published current criteria.

Timeline

  • 2026-05-16 (snapshot): Tracker established. TeraSwitch AS20326 validators remain on the ASN above the 25% threshold; no public migration announcements observed in primary sources from the 4 affected operators in this directory. Foundation enforcement pattern observable through SFDP residual delegation data on solana.org/delegation-dashboard.
  • 2026-05-01: Infrastructure rules entered force. SFDP-participating validators with ASN concentration above 25% or DC concentration above 15% become ineligible for new Foundation residual delegation and stake matching until they migrate or the concentrating ASN's share falls.
  • (pre-2026-05-01): Rules announced in advance to give operators a migration window. The specific announcement date and policy paper are tracked at solana.org/delegation-criteria; historical versions visible in the Foundation's policy archive.

What this means for stakers

The May 2026 rules introduce a meaningful structural shift in how stake flows to validators:

  • For stakers using SFDP-aware tools (Marinade SAM, the Jito Stake Pool, and SolBlaze each apply decentralization weighting that mirrors SFDP criteria), the rules tighten which validators receive algorithmic stake from these pools. A staker delegating through Marinade today is materially less likely to land at a TeraSwitch validator post-May 1 than pre-May 1.
  • For stakers delegating directly to a specific validator on TeraSwitch (Helius, Jupiter, Jito Labs, or Bitwise Onchain), nothing about their staking rewards changes — direct delegation is independent of Foundation programs. However, the validator's overall stake growth slows when SFDP and pools redirect away from concentrated ASNs, which affects long-term operator sustainability.
  • The rules do not currently apply to validators outside SFDP, but stake-pool selection criteria propagate similar penalties; effective coverage is broader than just SFDP-enrolled operators.

For a single validator's status against the May 2026 thresholds, see its profile's Decentralization signals section.

Affected validators in this directory

Listed by observable metric criterion: ASN concentration above the 25% threshold per Stakewiz asn_concentration field at epoch 971.

  • Helius — TeraSwitch AS20326, Frankfurt; ASN concentration 29.21%.
  • Jupiter — TeraSwitch AS20326, Frankfurt; ASN concentration 29.64%.
  • Jito Labs — TeraSwitch AS20326, Singapore; ASN concentration 32.5% (the highest observed in the directory).
  • Bitwise Onchain Solutions — TeraSwitch AS20326, Amsterdam; ASN concentration approximately 30.70%.

These four validators each appear on TeraSwitch's AS20326 in different cities, but the SFDP rule operates at the ASN level (one AS number, not one physical facility) — they collectively contribute to the AS20326 concentration that exceeds the threshold.

Validators well within the thresholds (selected examples; full list visible in Top validators by decentralization):

  • Capital Alliance — Hamburg, AS48014, 0.02% ASN concentration.
  • Code-Breader — Vienna, AS215120, 0.00% ASN concentration.
  • polkachu — Strasbourg, AS29066, 0.00% ASN concentration.
  • Grassets Tech — Prague, AS201265, 0.00% ASN concentration.

These four sit on small ASNs with minimal Solana stake concentration; they are unaffected by the May 2026 rules and would actually benefit from any redistributive effect that moves stake away from concentrated infrastructure.

Sources

Tracker since 2026-05-16. ASN and city concentration figures cited from Stakewiz API cache at epoch 971 (2026-05-15). Foundation criteria verified against solana.org/delegation-criteria on each tracker refresh.