tiero 👾 (@tierotiero) — Twitter Score 42 out of 1000

Tiero is a Bitcoin developer who co-founded Ark Labs and serves as its CEO. Tiero's Twitter Score is 42 out of 1000 as of July 2026, ranking #25,684 (top 5%) among 531,432 tracked accounts.

Tiero co-founded Ark Labs alongside Simone Giacomelli to build the Ark protocol, a Bitcoin layer-2 designed for instant, programmable offchain transactions. Ark is self-custodial, giving users unilateral exit paths through presigned transactions, and requires no Bitcoin fork, new opcode, sidechain, or rollup architecture. The team's product, Arkade, is a Bitcoin-native execution layer whose public beta launched in October 2025. A 2026 academic analysis co-authored by Tiero identified two attacks affecting the testnet implementation; the researchers responsibly disclosed the findings and confirmed that fixes were integrated into the mainnet build.

Tiero also co-founded Vulpem Ventures, where he previously served as Head of Products and led development of Marina Wallet and Fuji Money. He is also a member of the Liquid Network Technology Board, which guides technical priorities and interfaces with Blockstream.

Tiero has been active on the platform since 2011 and has published 10,328 posts. Ark Labs has raised institutional backing exceeding $7.7 million, including a $2.5 million pre-seed round led by Draper Associates alongside Fulgur Ventures and Axiom Capital, announced in August 2024, and a $5.2 million seed round announced in March 2026 with participation from Tether, Ego Death Capital, Epoch VC, Anchorage Digital, and others. Tiero has been mentioned by 41 accounts a total of 105 times.

Who follows Tiero on X?

The accounts that follow Tiero include 207 founders, 21 angel investors, 87 influencers and 3 VCs. Among them are Udi Wertheimer, Eric Wall, Banteg, Adam Back, 0xMaki and mikedemarais.eth.