Flowra and Honeypot Partner to Bring Sanctions Screening Directly to Solana Block Building
Key Takeaways
- •Flowra and Honeypot are integrating sanctions and risk screening directly into Solana's block-building process through Flowra's Programmable Block Policy technology.
- •The system screens for sanctioned wallet addresses as well as network-level obfuscation indicators including VPNs, proxies, and Tor exit nodes, which account for an estimated 31 to 61 percent of obfuscated traffic.
- •Each validator defines its own compliance policy rather than having rules enforced network-wide, preserving validator autonomy consistent with proof-of-stake decentralization.
- •The partnership addresses an unresolved technical question of how high-throughput blockchain networks like Solana can operationalize regulatory compliance expectations placed on validators.
- •The framework is being designed to support additional enterprise compliance providers over time, with initial efforts focused on sanctions screening, wallet screening, and auditability for regulated institutions.
Seoul, South Korea, July 30th, 2026, Chainwire
Flowra, the open orderflow auction and validator infrastructure platform for Solana, has announced a collaboration with compliance infrastructure provider Honeypot to integrate sanctions and risk screening directly into the Solana block-building process.
The partnership combines Honeypot's compliance intelligence with Flowra's Programmable Block Policy (PBP), enabling institutional validators to define compliance rules that govern which transactions and bundles can be included during block construction. The approach moves compliance checks closer to the consensus layer — at the point where validators decide what enters a block — rather than relying solely on front-end or application-level screening that end users can often bypass.
The integration is designed to support screening against sanctions-related criteria, including wallet addresses associated with sanctioned entities. It also targets network-level indicators such as VPNs, proxy services, and Tor exit nodes — methods that account for an estimated 31–61% of traffic arriving through network obfuscation. The framework is additionally being designed to support other enterprise compliance providers over time.
The collaboration comes amid sustained regulatory focus on how permissionless blockchains handle sanctioned addresses and illicit fund flows. The U.S. Treasury's Office of Foreign Assets Control (OFAC) has taken action against cryptocurrency mixing services in recent years, and regulators across multiple jurisdictions have signaled expectations that entities operating blockchain infrastructure — including validators — may face compliance obligations depending on their role and jurisdiction. How block-producing nodes on high-throughput networks like Solana, which processes significantly more transactions per second than most Layer 1 chains, can operationalize such requirements has remained an open technical question.
Under the collaboration, each validator will define its own policy, preserving validator autonomy while giving operators greater flexibility over block-building decisions. This per-validator design reflects the decentralized structure of proof-of-stake networks, where no single party controls block production, and contrasts with a protocol-wide enforcement model.
"Public blockchains have become increasingly attractive to institutional participants, but the infrastructure hasn't evolved to give validators the compliance controls many regulated operators expect," said Harry Hwang, CEO of Flowra. "We're working with Honeypot to bring compliance into the block-building process itself, allowing validators to define and enforce their own policies before transactions are included on-chain. The goal isn't to make the network less open, it's to give individual validators the flexibility to operate in a way that reflects their own requirements."
The collaboration will initially focus on sanctions screening, wallet screening, and auditability for regulated institutions. Whether other Solana infrastructure providers and validator operators adopt similar compliance frameworks, and how that affects transaction inclusion and network-level censorship concerns, will be worth monitoring as the integration rolls out. Additional technical details are expected to be shared as implementation progresses.
Flowra is a blockchain infrastructure company building validator and order flow solutions for the Solana ecosystem. The company develops technology designed to improve transaction transparency, value distribution, and incentive alignment across validators, users, and builders. Through its validator infrastructure, delegation programs, and MEV-related technologies, Flowra aims to create a more open, efficient, and scalable foundation for blockchain networks.
Honeypot provides compliance intelligence for platforms operating under sanctions and geo-restriction requirements. By detecting VPNs, proxies, Tor exit nodes, and other forms of location obfuscation, Honeypot helps exchanges, DeFi protocols, and financial institutions strengthen compliance controls and support regulatory audit requirements.