Blockspace by Everstake: The Solana Inbound Path, Sold as Products

TL;DR

• Blockspace is the inbound transaction path validators actually use, now sold by Everstake as a service and built as a two-sided marketplace.
• For validators: use the infrastructure you already run (shreds, stake weight, TPU access) beyond what staking alone pays. Install Blockspace’s software on your nodes; we route the demand.
• For searchers, traders, DeFi protocols, and order-flow operators: aggregated access to validator-grade infrastructure: MEV mempool, priority routing, raw shreds.
• Four products: ShredStream, Direct Shreds, SWQOS, and Relayer + TPU Adapter.
• Most failed Solana transactions die before they ever reach a block: at the RPC, the QUIC handshake, the scheduler, or the blockhash window. Blockspace is the set of tools we built to route around those failure modes inside Everstake’s own validator, now packaged as products you can buy.
• SWQOS removes the 15,000 SOL stake requirement for priority access. You whitelist the pubkeys that need it. Everstake routes them through our own validator stake.
• Everstake directly operates ~7.5M SOL in stake on Solana, with multiples more in stake-weight and shred coverage from validators that run Blockspace’s software on their own nodes. 
• Operating since the network’s testnet days; #2 globally in Frankfurt shred latency with a 20.6% slot-win rate.

What is Blockspace

Blockspace is Everstake’s platform for the Solana inbound path: the route transactions travel before they reach a validator’s block. It runs as a two-sided marketplace.

Background

Most Solana transactions that “fail” never reach consensus. They are dropped before a validator ever packs them into a block: at the RPC, the QUIC handshake, the banking scheduler, or the blockhash window.

Everstake has run a Solana validator since the network’s earliest testnet days, and that validator hit every one of those failure modes in production.

Blockspace is the set of tools Everstake built to fix them, tried and tested across multiple market conditions and through every stage of the network’s growth and congestion, now sold as products.

Blockspace is positioned as a two-sided marketplace: for validators on the supply side and for searchers, traders, and order-flow operators on the demand side. 

Blockspace currently offers four products

• ShredStream: raw shreds before slot confirmation, single-digit milliseconds ahead of public RPC.
• SWQOS: validator-grade priority routing, pubkey-scoped, no stake minimum of your own.
• Direct Shreds: dedicated, bandwidth-isolated feed at 3ms p50.
• Relayer + TPU Adapter: MEV mempool with direct submission window, pay only on profitable bundles.

Some products are self-serve, others require an application.

Who is Blockspace for

Solana Validators

If you run a Solana validator, you are already operating infrastructure the market has an appetite for. Shred forwarding, TPU connections, stake weight in the QoS lane, relayer flow — none of these are captured by staking alone. 

You install Blockspace’s software on your nodes. We help route demand to your infrastructure. No commercial team to build, no customer integration to maintain, no invoicing, no support tickets, no billing layer.

Contact the Blockspace team:

Searchers, traders, DeFi protocols, and order-flow operators

Transactions can be lost precisely when block space is scarcest. Blockspace gives you aggregated access to validator-grade infrastructure that would otherwise typically require either operating your own validator or holding ~15,000 SOL of stake.

Reach the Blockspace team at:

ShredStream: Raw Shreds Before Slot Confirmation

ShredStream streams raw Solana shreds over UDP from 6 regions before slot confirmation.

Who is it for

It is built for trading bots, validators, market makers, and snipers that need a pre-confirmation latency edge, not for teams that only need standard JSON-RPC reads.

ShredStream delivers shreds single-digit milliseconds ahead of public RPC. Independent benchmarks rank Everstake #2 globally in Frankfurt (FRA) shred latency.

Most providers do not offer shred-level access because they do not run the validators that produce shreds. Everstake does, across 6 live regions:

• Frankfurt (FRA)
• Amsterdam (AMS)
• Tokyo (TYO)
• New York (NYC)
• London (LON)
• Dublin (DUB)

Shreds are streamed raw over UDP to a destination IP and port that the subscriber provides.

ShredStream comes in two tiers: Connect (shared lane, FRA) and Ultra (dedicated lowest-latency lane across FRA, AMS, TYO, and NYC). 

There is no whitelist and onboarding is instant.

Direct Shreds: Dedicated IP, Your Bandwidth Alone

Direct Shreds delivers raw shreds over UDP straight from Everstake validator nodes on a dedicated link, at 3ms p50 in-region with zero co-tenant variance.

Who is it for

It is built for proprietary trading desks, large MEV operators, validators and market makers that need dedicated capacity in order not to share infrastructure with other customers.

The feed delivers both retransmitted shreds received from other nodes and leader shreds from blocks the Everstake validator produced. Operators can split the two streams onto separate ports for distinct processing pipelines.

Direct Shreds is region-locked to the validator host, so lowest latency requires a listener in the same region. The self-serve provisioning typically takes roughly 30 minutes.

SWQOS: Stake-Weighted Priority Routing

SWQOS routes transactions through Everstake’s validator so they can benefit from priority routing in block-building on the validator’s stake weight, the lane unstaked RPCs queue behind.

Who is it for

It is built for searchers, trading desks, DeFi protocols, and settlement systems whose transactions are not landing during congestion, where landing rate is the bottleneck rather than raw send rate.

When a Solana validator builds a block, it processes transactions in stake-weighted order. SWQOS carries a tip instruction inside each transaction that bumps its priority within that ordering, producing a higher landing rate during congestion than public RPCs achieve.

SWQOS exposes two submission paths with different authentication models:

• HTTP / RPC. Public endpoint, no API key, standard sendTransaction with no preflight. Each transaction must include a tip transfer of at least 500,000 lamports to a designated Everstake tip account. Default rate limit is 10 TPS per client.
• QUIC. Pubkey allowlist authenticated with a Solana keypair provided at the time of subscription. Raw serialized transactions over a QUIC stream, lower latency than the HTTP path, 8 connections per minute per client.

Normally, accessing stake-weighted priority requires holding roughly 15,000 SOL of your own. SWQOS is designed to remove that requirement. Subscribers whitelist the wallets that need priority and route them through validator-grade QoS with no SOL of their own.

SWQOS is available in three tiers:

• Pay-As-You-Go: RPC-based, FRA region, for low-volume or testing.
• Base: QUIC-based, FRA, up to 10 pubkeys, for single-region desks.
• Pro: QUIC-based across FRA, NYC, AMS, and TYO, up to 100 pubkeys, for multi-region trading systems.

Relayer + TPU Adapter: MEV Mempool and Direct Submission

Relayer + TPU Adapter is two components, sold separately or together, for searchers running arbitrage, sandwich detection, and signal-identification strategies. The Relayer streams pre-sequencing TPU traffic to a gRPC endpoint the searcher operates; the TPU adapter ships winning bundles direct to the validator’s TPU.

The Relayer is a push service modeled on Jito Relayer. The validator TPU receives a transaction, forwards it via gRPC to the searcher’s Block Engine, and the searcher’s software processes or acts on it before the leader sequences it.

The TPU adapter then ships response bundles into the roughly 250ms priority window per leader. Searchers pay only when a bundle is profitable, and the Relayer half is application-based.

This is the pre-sequencing counterpart to ShredStream. ShredStream reads shreds after sequencing to track in-flight pool state, while Relayer + TPU reads pending transactions before the leader includes them. Advanced operators often run both.

Where Blockspace Runs at Launch

Blockspace launches across 6 regions, with product coverage varying by region. Frankfurt runs all four products live, while the remaining regions phase in over the rollout.

The Operating Record Behind It

On Solana specifically, Everstake directly operates ~7.5M SOL in stake on Solana and has operated a validator since the network’s earliest testnet days. The Frankfurt deployment posts a 20.6% slot win rate and a sub-10ms shred lead in-region.

Onboarding is self-serve with no card required to start, and invoicing is on demand by wire or USDC. Each product carries its own access model, billed per product in the dashboard.

The landing page is live at blockspace.everstake.one and the documentation is at docs.blockspace.everstake.one.

Reach the Blockspace team at: