The archive · Money & Fintech · Strategic decision · 2021–2026
a16z-backed custody startup Entropy returns ~$27M and winds down in 2026
Entropy raised a $25M a16z-led seed to replace centralized crypto custody, pivoted for four years, then returned remaining capital to investors in January 2026.
Entropy
What the business is
Entropy builds self-custody crypto tools: users deposit and manage assets across blockchains while setting their own rules (such as time-gated constraints), using multiparty computation, threshold cryptography and trusted execution environments; it later pivoted toward a crypto-automation workflow platform.
Starting capital：$1.95M pre-seed (January 2022) plus a $25M seed led by a16z crypto (June 2022); total ~$27M.
How it started
Tux Pacific founded Entropy in 2021 as a decentralized alternative to centralized crypto custodians like Fireblocks and Coinbase. The company raised a $1.95 million pre-seed in January 2022 and a $25 million seed led by a16z crypto in June 2022, with participation from Dragonfly Capital, Ethereal Ventures, Variant, Coinbase Ventures, Robot Ventures, Inflection and the Komerabi Fund, bringing total funding to about $27 million. The original product used multiparty computation to let users deposit and manage cryptocurrencies across chains while implementing their own rules, such as time-gated constraints.
What happened
After four years, several pivots and two rounds of layoffs, Entropy's most recent product was a crypto automations platform — similar to n8n or Zapier but for crypto — with automated signing via threshold cryptography, secure computation in trusted execution environments and AI integrations. Pacific wrote that an initial feedback request revealed the business model was not venture scale, leaving a choice between finding a creative way forward or pivoting once more.
How it ended up
On January 24, 2026, Pacific posted on X that they were winding up Entropy and returning remaining capital to investors, saying that after four hard years in crypto it was time to close up shop. The Block, Cointelegraph and ChainCatcher covered the shutdown on January 25–26, 2026. The Block Pro noted crypto venture deal counts fell roughly 60% year over year in 2025 as context.
Background
Entropy was founded in 2021 by Tux Pacific, a self-taught cryptographer who had previously worked at NuCypher, as a decentralized alternative to centralized crypto custodians like Fireblocks and Coinbase. It raised a $1.95 million pre-seed in January 2022 and a $25 million seed led by a16z crypto in June 2022 — with Dragonfly Capital, Ethereal Ventures, Variant, Coinbase Ventures, Robot Ventures, Inflection and the Komerabi Fund participating — bringing total funding to about $27 million.
The original product used multiparty computation so users could deposit and manage cryptocurrencies across blockchains while implementing their own rules, such as time-gated constraints — custody without trusting a third party. Over four years the company went through several pivots and two rounds of layoffs; its most recent product was a crypto automations platform similar to n8n or Zapier, with automated signing via threshold cryptography, secure computation in trusted execution environments and AI integrations.
Pacific said an initial feedback request revealed that the business model was not venture scale, leaving a choice between finding a creative way forward or pivoting once more. On January 24, 2026, they announced on X that they were winding up Entropy and returning remaining capital to investors: after four hard years in crypto, it was time to close up shop.
The Block, Cointelegraph and ChainCatcher covered the shutdown on January 25–26, 2026, in the context of a crypto funding slump — The Block Pro data showed venture deal counts fell roughly 60% year over year in 2025. Entropy's orderly wind-down and capital return became a counterexample to crypto's more common collapse-and-burn shutdowns.
What has to be true
- Entropy bet on a real technical wedge — self-custody with programmable rules — but the addressable market stayed small, and the wedge never became a venture-scale product.
- Four years, several pivots and two rounds of layoffs show a long search for product-market fit; the shutdown came only after an explicit feedback check showed the model was not venture scale.
- Returning remaining capital to investors instead of burning it kept the option value of the team and its reputation, a discipline that is rare in crypto wind-downs.
- The macro context mattered: with crypto deal counts down ~60% year over year in 2025, even a16z-backed experiments found it hard to raise again — timing is part of the model.
What can be applied
Technology alone is not a business: when feedback showed Entropy's market was not venture-scale, the founder returned capital instead of pivoting — orderly shutdowns preserve trust and optionality.
Aftermath
As of January 26, 2026, Entropy had announced its wind-down and was returning remaining capital to investors; Pacific said they planned to take a break before pivoting away from crypto, with an interest in pharmaceutical research on hormone delivery. The shutdown followed a year in which crypto venture deal counts fell roughly 60% year over year, per The Block Pro — the same week, a16z-backed Farcaster said it would return $180 million in capital to investors amid a takeover by Neynar, per Cointelegraph. Entropy's services were being closed rather than sold.
Sources
- Entropy, a16z-backed decentralized custody startup, is winding down and returning capital to investors
- A16z-backed crypto startup Entropy to shut down, refund investors
- The decentralized custody startup Entropy, backed by a16z, announced its shutdown and will return funds to investors
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