Sssebi Keeps SEBI Pool at 0% Margin for Cardano Decentralization

Romanian Cardano community member Sssebi continues operating the SEBI stake pool with a 0% margin and a fixed fee of 170 ADA, despite publicly stating that the operation is currently unprofitable. Registered in April 2025, the pool had approximately 3.22 million ADA in live stake, 149 delegators and 176 lifetime blocks according to Cexplorer data checked on September 16.

Known as @Sssebi on X, where he has approximately 24,500 followers, he connects the pool’s operation with his broader support for Cardano decentralization. His public activity includes daily ecosystem coverage, promotion of Cardano projects and repeated calls for holders to consider delegating to smaller stake pool operators.

SEBI Operates With a 0% Margin

SEBI is a public Cardano stake pool through which holders can delegate their stake and participate in securing the network without transferring assets from their wallets. Delegated funds remain under the user’s control while the pool validates transactions and produces blocks.

The pool was registered on April 10, 2025, with a declared pledge of 1,000 ADA. Its margin is set at 0%, while its fixed fee is 170 per epoch in which the pool produces at least one block.

Public Cardano explorers display different live stake and lifetime block figures because their snapshots and update schedules vary. On September 16, Cexplorer listed approximately 3.22 million in live stake and 176 lifetime blocks, while other explorers displayed live stake ranging from roughly 2.4 million to 3.7 million.

In June, Sssebi wrote that SEBI maintains the lowest available fixed fee and a zero percent margin even though running a small pool of its size was “not profitable at this time.” He linked the pool’s fee structure directly to attracting delegators and keeping an independent operator active on the network.

Small Cardano Pools Face Economic Pressure

Operating a stake pool requires server infrastructure, maintenance and continuous monitoring. Revenue depends on the amount of delegated stake and the frequency of block production, making smaller operators particularly exposed when delegators move elsewhere.

In November 2025, Sssebi reported that SEBI’s delegated stake had fallen from approximately 2.7 million to around 700,000. He said the pool was no longer covering its server costs and that he had considered shutting it down.

SEBI remained active. When TNTM announced the closure of its pool in April 2026, Sssebi encouraged its delegators to move to other small operators, including SEBI. In June, he again addressed the growing number of pool closures and argued that smaller operators were needed to preserve a wider distribution of Cardano block production.

Smaller pools compete with larger operators that benefit from more stable delegation, more frequent block production and more predictable revenue. Delegation decisions therefore affect both an individual pool’s finances and the number of independent operators maintaining Cardano infrastructure.

Decentralization Defines Sssebi’s Cardano Role

Sssebi says he has actively followed Cardano since 2018. His personal claims about purchasing and holding Cardano assets cannot be independently verified, including a June 2025 statement that 90% of his net worth was held in Cardano and its native tokens. His continuous public activity and the operation of SEBI since April 2025 are publicly documented.

His posts cover stablecoins, decentralized finance, USDCx liquidity and projects including Strike Finance and Ascend. He also reacted positively to the Cardano Foundation joining Mastercard’s Crypto Partner Program while continuing to highlight the liquidity constraints facing applications across the ecosystem.

Sssebi describes freedom and decentralization as defining principles of cryptocurrency. SEBI gives that position an operational dimension through its zero percent margin, minimum fixed fee and continued participation in block production despite periods when revenue did not cover infrastructure costs.

SEBI’s ability to remain active depends on maintaining enough delegated stake to produce blocks regularly and cover its infrastructure. Each delegation therefore contributes directly to keeping another independent operator involved in Cardano’s block production.