Cryptography, privacy, and decentralized systems on Cardano.
Logical Mechanism designs and builds smart contracts for teams shipping on Cardano. We also build privacy software of our own.
Services
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Smart contracts
Designed, written, and tested in Aiken, from the first specification to mainnet.
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Everything around the contract
Transaction building, chain indexing, and wallet integration, so people can use what you deploy.
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Cryptography and protocol design
For projects that need privacy, proofs, or something that hasn't been built on Cardano yet.
Client work is confidential by contract, so it isn't listed here. Our own work is public on GitHub.
Seedelf Wallet
A Cardano wallet for Chrome with private payments built in. The public side works like any Cardano wallet: send, receive, stake, and vote. The private side lets you pay and get paid without revealing who receives or who spends.
- One recovery phrase for your public account and your private balance
- Pay anyone's Seedelf by name, privately
- Use dApps through one-time accounts, then bring the funds back to your private balance
- Also available as a command-line wallet for Linux, macOS, and Windows
Collateral Provider
Every smart contract transaction on Cardano needs collateral. The Collateral Provider signs with a shared collateral UTxO, so wallets and apps don't have to set aside their own. It's free to use, and Seedelf relies on it.
Visit giveme.my Read the source code for the Collateral Provider
Contact
Tell us what you're building, where it stands, and when you need it.
For anything sensitive, encrypt your message to our PGP key.
Key fingerprint
8DF2 B3E9 B711 42BF E4F2
DF15 9C67 8E93 1E72 130D