Anonymous data
via CF monitoring
Commit data on-chain under an identifier derived from a wallet and a secret nonce, then prove ownership later by revealing the nonce.
On-chainAikenOff-chainCCL JavaEvolutionMeshJSPyCardanoAtomic transaction
via CF monitoring
Spend from a script and mint a token in one transaction to show how Cardano transactions succeed or fail as a single unit.
On-chainAikenOff-chainCCL JavaEvolutionMeshJSPyCardanoAuction
via CF monitoring
Run an on-chain English auction where bids are locked in the contract, outbid bidders reclaim their funds, and the highest bid settles when the deadline passes.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoBet
via CF monitoring
Let two players stake an equal amount and have a restricted oracle announce the winner, who then claims the whole pot.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoConstant product AMM
via CF monitoring
Run an automated market maker that prices swaps with the constant product formula and lets anyone provide liquidity.
On-chainScalusContent ownership
via MeshJS
A registry where users create and own content.
On-chainAikenOff-chainMeshJSCrowdfund
via CF monitoring
Collect donations toward a funding goal where the beneficiary withdraws only if the goal is met by the deadline, and contributors otherwise reclaim their funds.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoDecentralized identity
via CF monitoring
Manage self-sovereign identities where an address controls ownership through signatures and can authorize time-limited delegates.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoEditable NFT
via CF monitoring
Mint an NFT whose owner can update its data, transfer it, and permanently seal it against further edits.
On-chainScalusEscrow
via CF monitoring
Hold assets from two parties until both sign off, then complete or cancel the exchange.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoFactory
via CF monitoring
Deterministically create and track many product contracts from a single factory instance using a marker NFT and on-chain registry.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoHello World
via MeshJS
Lock and unlock assets, a hands-on intro to validation and transaction building.
On-chainAikenOff-chainMeshJSHTLC
via CF monitoring
Lock funds behind a secret and an expiry so anyone can claim them by guessing the secret before the deadline, after which the owner reclaims them.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoLottery
via CF monitoring
Run a fair two-player lottery using a commit-reveal-punish protocol that needs no external randomness or oracle.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoNebula
via awesome-aiken
An NFT marketplace contract with a chain indexer and event listener for individual projects.
On-chainAikenNFT minting machine
via MeshJS
Mint NFTs with an automatically incremented index.
On-chainAikenOff-chainMeshJSPayment splitter
via CF monitoring
Distribute locked funds equally among a fixed list of known payees.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoPayment subscription
via Anastasia Labs
Automated recurring payments between subscribers and merchants.
On-chainAikenOff-chainEvolutionPrice bet
via CF monitoring
Let two players bet on whether an oracle exchange rate reaches a target before a deadline, with the pot going to the winning side.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoProjected NFT Whirlpool
via awesome-aiken
A protocol that lets NFTs from other ecosystems be used in games while keeping custody.
On-chainAikenRoyalties
via MeshJS
Enforce creator royalty payments on NFT sales using the CIP-102 royalty datum standard.
On-chainAikenOff-chainMeshJSSimple transfer
via CF monitoring
Deposit assets at a script and name a receiver who can later withdraw them.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoSimple wallet
via CF monitoring
An on-chain ADA wallet where the owner creates payment intents, executes them to pay recipients, and can withdraw the full balance.
On-chainAikenOff-chainCCL JavaEvolutionMeshJSPyCardanoStorage
via CF monitoring
Anchor SHA-256 commitments of off-chain data on-chain so anyone can re-hash the data and verify its integrity and existence.
On-chainAikenScalusOff-chainBlazeCCL JavaEvolutionMeshJSPyCardanoSundaeSwap Yield Farming v2
via awesome-aiken
Yield farming reward-distribution contracts.
On-chainAikenToken transfer
via CF monitoring
Lock a specific native asset that only a designated receiver can withdraw by signing the spending transaction.
On-chainAikenOff-chainCCL JavaEvolutionMeshJSPyCardanoUpgradable multisig
via Anastasia Labs
Collective fund management requiring multiple approvals.
On-chainAikenOff-chainEvolutionUpgradable proxy
via CF monitoring
Point a stable proxy address at a logic script hash stored in its datum, so the logic version can be swapped by updating the datum.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoVault
via CF monitoring
Protect funds with time-delayed withdrawals and a separate recovery key that can cancel a pending withdrawal during the wait period.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanoVesting
via CF monitoring
Lock funds for a period and let the beneficiary withdraw them once the lockup elapses.
On-chainAikenScalusOff-chainCCL JavaEvolutionMeshJSPyCardanozkLogin
via eryxcoop
Authenticate with an existing OpenID account and control funds through zero-knowledge proofs verified on-chain, without seed phrases.
On-chainAiken
Cardano Contracts Library
Reference contracts from across Cardano, indexed by use case.