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Is Syncro Sender Safe? — How P2P.org Protects Transaction Privacy on Solana

Written by Mike

Is Syncro Sender safe to use, and how does it handle transaction privacy and security?

No private key access required

Syncro Sender only accepts pre-signed transactions. The service never sees, stores, or requests private keys. The client application signs the transaction locally using its own key management, then submits the signed transaction to Syncro Sender for delivery. The signing process is entirely separate from the routing process.

No custody of assets

Syncro Sender does not hold, custody, or touch any client assets. No funds pass through P2P.org's systems. No wallets are created or controlled on behalf of clients. The service is purely a routing layer: it takes a signed transaction and delivers it to the Solana network through optimized paths.

Direct validator routing, no shared mempool

Transactions submitted through Syncro Sender are routed directly to block producers through P2P.org's staked validator connections. Unlike public endpoints where transactions may sit in visible queues, Syncro Sender sends directly to leaders via private staked connections. This can reduce exposure to some classes of front-running or transaction copying, depending on network conditions and the broader ecosystem.

Native Solana mechanisms only

Syncro Sender uses only native Solana network mechanisms for transaction delivery: direct leader submission, TPU forwarding via SWQoS, a dedicated relayer for redundancy, and standard RPC broadcast. There are no proprietary protocols, no private mempools, and no off-chain transaction handling. The service simply uses existing Solana infrastructure paths more efficiently.

P2P.org operates as infrastructure, not a trading entity

P2P.org is a validator infrastructure provider, not a trading firm. The service is designed so that transactions flow directly to validator leaders without an additional intermediary layer intended to inspect transaction contents.

SOC 2 compliance

P2P.org has completed an independent third-party SOC 2 audit. The audit scope covers security controls including data protection, access management, and operational security (see the applicable report/scope for details).

On-chain billing eliminates payment risk

The tip-based pricing model means there is no off-chain billing relationship, no stored payment credentials, and no invoicing infrastructure. Payment is embedded in the transaction itself and executed only on successful landing.


This article is for informational purposes only and does not constitute a service agreement. Use of Syncro Sender is governed by the Terms of Service: https://www.p2p.org/syncro-terms

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