Frictionless Web3 starts with UTXOS
Power your projects on Bitcoin & Cardano with full-stack UTXO infrastructure.utxos.dev Bitcoin and CardanoJoined September 2025
User onboarding shouldn't start with "go buy some ADA first."
With Transaction Sponsorship on utxos.dev, your users can interact with your dApp without worrying about transaction fees, creating a seamless, Web2-like experience while you retain the benefits of Cardano's UTxO model.
Sponorship feature gives addition to our seemless non-custodian wallet experience with social logins useful for marketplaces, gaming platforms, social apps, or enterprise solutions, sponsored transactions can dramatically reduce onboarding friction and improve user conversion.
Available as a premium feature starting at $199/month, giving your project access to managed transaction sponsorship infrastructure so you can focus on building, not fee management.
Remove barriers. Increase adoption. Deliver the experience users expect.
Ready to offer gasless interactions on Cardano?
start building the next generation of user-friendly blockchain applications.
Your brand. Our infrastructure.
UTXOS white-label features:
- Custom wallet UI
- Your auth providers
- Your domain
- Your branding
Users never see "UTXOS." They see you.
Enterprise-grade Web3 without building from scratch.
Bitcoin wallet integration in UTXOS:
✓ Native SegWit (P2WPKH)
✓ Taproot (P2TR)
✓ PSBT signing
✓ Message signing
All through social login. Non-custodial.
This is what Bitcoin adoption looks like.
Cardano's superpower: Native assets without smart contracts.
UTXOS makes it accessible:
- Manage NFTs and tokens
- CIP-30 compliant
- Stake delegation support
- Multi-asset UTXOs
Full Cardano, zero complexity.
The hidden complexity of transaction sponsorship: UTXO contention.
UTXOS handles it automatically:
- Consolidates dust UTXOs
- Fragments large UTXOs
- Chains prepare transactions
- Excludes pending UTXOs
You just call sponsorTx(). We do the math.
Passwords are dead. Long live passkeys.
UTXOS supports WebAuthn with PRF extension:
- Touch ID / Face ID as signing auth
- Hardware-backed security
- Phishing resistant
- Better UX than passwords
The future of Web3 auth is already here.
Where does signing actually happen in UTXOS?
In an isolated iframe:
1. Tx sent to iframe
2. Key reconstructed in memory
3. Signature created
4. Key destroyed
5. Only signature returned
Your key never touches your app's main thread.
How UTXOS keeps your keys safe:
Your private key → split into 3 shards
- Device Share (encrypted on your device)
- Auth Share (requires valid login)
- Recovery Share (for new devices)
2-of-3 needed to reconstruct.
UTXOS only ever holds 1. You control 2.
Sometimes you need to manage wallets server-side.
UTXOS Developer-Controlled Wallets:
- Create wallets programmatically
- Sign with your Entity Secret
- Keys encrypted at rest
- Full API control
Perfect for exchanges, custodians, and treasury management.
How does UTXOS transaction sponsorship actually work?
1. You build tx with static placeholder UTXO
2. SDK rewrites with real UTXO from your pool
3. Your wallet signs the fee input
4. User signs their inputs
5. Combined tx submitted
Automatic UTXO pool management included.
Adding wallets to your app shouldn't take weeks.
UTXOS integration:
```
npm install @utxos/sdk
```
That's it. Social login. Multi-chain. Non-custodial.
Your users are signing transactions in 5 minutes.
Integrating 3 blockchains used to mean:
- 3 different SDKs
- 3 different auth flows
- 3x the complexity
UTXOS: One SDK for Bitcoin, Cardano, and Spark.
```
const wallet = await Web3Wallet.enable()
wallet.bitcoin.signTx(...)
wallet.cardano.signTx(...)
wallet.spark.signTx(...)
```
"But what if UTXOS disappears?"
Export your private key anytime. Standard formats. Works with any wallet.
We're infrastructure, not a prison.
True self-custody means you can leave whenever you want.
Lost your phone? No problem.
UTXOS wallet recovery:
1. Sign in with your social account
2. Verify with passkey OR recovery answer
3. Done. Same wallet. Same keys. New device.
No hunting for seed phrases. No cold sweats.
"I can't send this NFT because I don't have crypto for fees"
This is why Web3 onboarding sucks.
UTXOS Transaction Sponsorship: Developers pay fees on your behalf.
Users transact. Devs sponsor. Friction eliminated.
With UTXOS:
✓ Sign in with Google/Discord/Apple
✓ Your keys are split using Shamir's Secret Sharing
✓ 2-of-3 shards needed to sign
✓ UTXOS never has access to your full key
Non-custodial + good UX. Finally.
What if your grandma could use Bitcoin without knowing what a seed phrase is?
That's UTXOS.
We're building the infrastructure layer that makes Web3 as simple as Web2, without sacrificing self-custody.
675 Followers 2K FollowingArtilect, Computational Agent, Yogi of APIs, graphs, utxos. Cardano Advocate $bluerbot.gptApproved().false 🤖⚓️ whistler 🎵 Have a seat on the 💺porch
551 Followers 276 FollowingCentre for Open Systems Deployment: supporting Cardano standards (through the CIP process: https://t.co/bdGGipPM4B) and cryptocurrency security (https://t.co/lChmXNdOpL).
5 Followers 59 FollowingSocial and economic systems belong on secure and trusted systems. We teach ambitious builders to use the most secure and trusted blockchains.
963 Followers 5K FollowingTop performing Cardano staking pool since Dec 2019 https://t.co/3zoB3YaD5e
20% of operator pool rewards donated to https://t.co/QSNFXxg7jk
106 Followers 377 FollowingDigital wills on Cardano. Keep your ADA liquid. Inherit on-chain. Powered by Aiken + Lucid. | Also reporting on the broader Cardano market.
81 Followers 159 FollowingAnalyzing decentralized systems with a focus on PoW economics, cryptographic evolution and architecture choices that determine long-term survivability 🌐
434 Followers 898 Following#ada #ia-not #night Here fucking fud muffins and there bullshit majority of times with screen shots but all of the time with rational thinking skills!!!
507 Followers 544 FollowingA hub of diversely-skilled professionals onboarding END-USERS and SMBs to Bitcoin and Web3.
👉https://t.co/B0GYvZShDH👈We need your follows outside of X, pretty pls
29K Followers 940 FollowingI am the very model of a modern Major-General I've information vegetable, animal, and mineral.
Ghostchainbusting since 2016
Founder & CEO @zenGateGlobal
2K Followers 2K FollowingOpinion. Not financial advice. They panic, I position. VAHVA: Value • Alignment • HODL • Vigilance • Ascent. Jesus defeated death so you can live
1K Followers 1K FollowingVisit now: https://t.co/7TMkwng5w0
Meme media is here 🚀 #Cardano meme market, all the latest news in one place.
Visit: https://t.co/7TMkwng5w0
6K Followers 4K Following💥 Founder: https://t.co/mNhynyy6dc
💥 Follow now @songoncardano
🎵 Long on $SONG
📢 No Financial Advice Here
👊 Big Cardano $ADA lover
3K Followers 6K Following#Bitcoin #Cardano $SNEK #ClayNation 2X horseshoe champion, FFB Champion, Professional Chiefs Fan/Adviser…. NOT A FINANCIAL ADVISOR- but I could be……..
6K Followers 866 FollowingYour money, onchain. Lightning fast, super secure & easy to use!
Available for $ADA, $BTC & $SOL. Download now. Also building @AgentWalletHQ and @BlockSign_io
660 Followers 1K FollowingBuilder at heart | Part of @W3iSoftware building @USDMOfficial and @Shield_USD stablecoins | Diving into all things Cardano & Midnight | 🇳🇱🇩🇪🇲🇹
1K Followers 2K FollowingDoing great things the laziest way possible since the early 60s!
All about the bass AND open-source education and decentralized infrastructure...
33K Followers 4K FollowingCypherpunk Artist infusing software, math, art, tech, and chemistry into biological interfaces. #BitcoinOnly. No Shitcoins. No NFTs. https://t.co/R0dsYMsF02
9K Followers 278 FollowingCTO Sundae Labs | https://t.co/9PNVVduxQs
Trying to be less active on Twitter
drep158mfwdv7lvqzg0yrdxwhsmkq5406nmvw4yvjyyfcawlwus2eylt
23K Followers 4K FollowingLeading Chinese voice on digital assets.
Tracking crypto’s shift into financial infrastructure.
Focus: RWA, stablecoins & regulation.
2K Followers 172 FollowingWe are building a network of decentralized and beneficial AI services. Get funded through DEEP Projects your AI service and publish it on SingularityNET.