Stakers can earn yield on private BTC and use it across Starknet DeFi without giving up balance privacy
[Bengaluru, 12th May 2026] — Endur, the liquid staking layer for Starknet, today announced the launch of xstrkBTC, a liquid staking token for strkBTC, Starknet’s native shielded Bitcoin asset. xstrkBTC is the sixth LST issued by Endur, the fifth on the BTC side, and the first to carry optional privacy properties through to the staked position.
strkBTC was developed by Starknet to address a structural gap in BTCfi. Bitcoin liquid staking has scaled into a multi-billion dollar market in under two years, yet less than 1% of total BTC supply is productive in DeFi today. The bottleneck is the ledger. Productive BTC sits on transparent chains where balances, transfers, and collateral positions are visible by default. Treasuries, funds, family offices, and individuals with security exposure have largely stayed out as a result. strkBTC, ratified by SNIP-38 and SNIP-39 and powered by Starknet’s zk-STARK cryptography, gives Bitcoin holders optional privacy at the asset layer, with reversible mode switching, threshold-controlled selective disclosure, and full DeFi composability.
xstrkBTC routes that shielded asset into productive use across Starknet from Day 1. Stakers can deploy xstrkBTC as collateral on Vesu, pair it on Ekubo for AMM yield, or in future they can deposit into automated yield strategies on Troves, including a dedicated Hyper xstrkBTC vault launching alongside the LST. The shielded property of the underlying carries through every layer.
For institutions, xstrkBTC enables productive Bitcoin allocations that meet privacy requirements without compromising auditability. Viewing keys allow selective disclosure to auditors and regulators when legally required. For retail users, xstrkBTC is a single token that earns staking rewards, lending interest, LP fees, and vault returns concurrently, while keeping balances and transfers private.
“Endur was built to be the liquid staking layer for Starknet, and that increasingly means the privacy-preserving slice of it,” said Akira, cofounder of Endur. “xstrkBTC is the first proof point that yield, composability, and shielded state can sit in the same token. It will not be the last. As more STRK20 assets come online, the LST stack expands with them.”
Yield accrues through exchange rate appreciation. There is no rebasing and no off-chain reward distribution. Endur charges no stake fee, no redemption fee, and a 15% performance fee on rewards earned, never on principal. Withdrawals are mediated by an NFT-tracked queue, with deposit-withdrawal matching for faster exits than the native ~7 day path.
xstrkBTC is live today on Endur. More information at endur.fi.
About Endur
Endur is the liquid staking layer for Starknet, supporting STRK and Bitcoin liquid staking across a stack of six LSTs: xSTRK, xWBTC, xtBTC, xsBTC, xLBTC, and xstrkBTC. Endur was built as a collaboration between STRKFarm and Karnot Labs, two long-standing builders in the Starknet ecosystem, and is cofounded by Akira. The protocol routes deposits to a curated validator registry and integrates with Vesu, Ekubo, Troves, and the broader Starknet DeFi stack.
Website – https://www.endur.fi/
Media contact: akshiya@unwraplabs.com
