Sample Templates for Contracts

For reference only, these are not audited, and notfor production use


Delta - Options

DeathRoll - Betting



The Delta contract is an ERC20 token implementation for put based Hedge financial options. It utilizes arbitrary external data through Morpheus integration to update certain contract parameters such as the current price of an underlying asset.

Key Features

  • Effortless PUT Creation: Customize a hedge option on your chosen asset, defining your terms for expiry and collateral.

  • Leverage Support: Utilize leverage on your PUT, particularly beneficial for assets with low volatility.

  • Flexible Collateral: While it initially accommodates stablecoins (like USDC), the protocol is built to handle various forms of collateral.

  • Your Choice of Price Source: Select the API that will source your strike price.

  • Delta Payouts: Receive the Delta (difference) between the strike and current price at expiry. PUT sellers can redeem collateral, less the Delta, at expiry.

  • Tokenization: PUTs can be sold on any decentralized exchange (DEX) you prefer, allowing for liquidity.

Key Components

  1. ERC20 Implementation: Inherits standard ERC20 functionalities such as token transfer, balance tracking, and allowance management.

  2. Oracle Integration:

    • Morpheus Oracles: The contract interacts with multiple Oracle addresses (morpheus) to request and update price feeds.

    • Price Update Mechanism: The updatePrice function pulls data from the Oracles to update the currentPrice of the underlying asset.

    • Feed Requests and Updates: Functions requestFeed and updateFeeds manage Oracle feed requests and support respectively.

  3. Option Contract Features:

    • Initialization: The init function sets up the option contract with parameters like expiry time, strike price, and Oracle details.

    • Minting Options: Users can mint options by depositing collateral through the mint function.

    • Option Settlement: The redeem function allows users to settle their options post-expiry, with outcomes depending on the strike price and current price.

  4. Collateral Management:

    • Users deposit collateral when minting options, which is managed within the contract.

    • Functions like unlock and redeem handle the collateral based on option performance and expiry.

  5. Event Emissions:

    • Events like Initialized, Minted, Delta, Unlocked, and Redeemed are emitted for tracking various contract actions.

Contract: DeltaFactory

The DeltaFactory contract is responsible for deploying Delta contracts. It allows users to create new Delta option contracts with specific parameters.

Key Features

  1. Delta Contract Creation: Users can create new Delta contracts with specific option and Oracle configurations.

  2. Storage of Deployed Contracts: Keeps a record of all deployed Delta contracts.

  3. Event Emissions: Emits deltaDeployed event upon the creation of a new Delta contract.

Oracle Use

  • Fetching real-time price data of underlying assets.

  • Ensuring that the price used in contract functions like option settlement is up-to-date and accurate.

  • Managing a decentralized and reliable data source, enhancing the contract's trustworthiness and functionality in a decentralized finance (DeFi) context.


The DeathRoll contract is a unique gaming contract leveraging smart contracts for a competitive betting game. It integrates with Morpheus to provide random numbers for game outcomes.

Key Features

  1. Game Creation and Management: Facilitates the creation and management of betting games between two players.

  2. Betting Mechanism: Players can place bets in each game, with the smart contract managing the bet amounts and rules.

  3. Oracle Integration fRandomness: Utilizes Morpheus Oracle for generating verifiable random numbers, essential for determining game outcomes.

  4. Withdrawal System: Allows players to withdraw their winnings or refunded bets.

  5. Collector Management: Enables changing the collector address and oracle fee.

Key Components

  1. Game Structure: Each game is a struct containing player addresses, commitments, bet amounts, rolls, and other relevant details.

  2. Oracle Integration:

    • Morpheus Oracle: Interacts with Morpheus Oracle to request random numbers (VRF - Verifiable Random Function).

    • Request and Retrieve Oracle Data: Functions to request and retrieve data from the Oracle to ensure fair game outcomes.

  3. Game Flow:

    • Game Creation: Players can create games with specific bet amounts.

    • Joining Games: Players join existing games and place their bets.

    • Determining Winners: After both players have joined and bet, the contract determines the winner using Oracle-generated random numbers.

  4. Event Emissions:

    • Events like GameCreated, PlayerJoined, and WinnerDetermined for tracking game creation, player participation, and outcomes.

  5. Withdrawal and Refunds:

    • Players can withdraw their winnings or unplayed bet amounts.

    • A refund mechanism is in place for situations like unmet game conditions.

  6. Collector and Oracle Fee Management:

    • The contract allows changing the collector's address and updating the oracle fee.

Oracle Use

  • Random Number Generation: The Morpheus Oracle is used to provide random numbers, ensuring fair and unpredictable game outcomes.

  • Verifiability: By using an Oracle, the contract ensures that the randomness used in games is verifiable and tamper-proof.

Additional Considerations

  • Security and Fair Play: The contract's design emphasizes fair play by using a verifiable random number from an Oracle.

  • Economic Model: A fee-collecting mechanism and the ability to adjust oracle fees reflect a dynamic economic model within the game.

  • Customization and Flexibility: The contract allows for game customization and is adaptable to various player preferences and strategies.

Overall, the DeathRoll contract presents an innovative approach to decentralized gaming for a secure, fair, and engaging gaming experience.


The HedgeInsure contract is an ERC20 token implementation, specifically designed for creating and managing insurance-like financial products. It integrates with the Morpheus system to dynamically adjust certain contract parameters based on external data feeds, such as market prices or other relevant financial data points.

Key Features at a Glance

  1. Customized Insurance Products: Creation of hedging instruments that can act like insurance policies against market volatility or other conditions like hacks.

  2. Collateralization with ERC20 Tokens: Uses ERC20 tokens as collateral for the insurance contracts.

  3. Dynamic Pricing with Oracle Integration: The contract uses Morpheus Oracle for real-time data to adjust pricing and other key contract metrics.

  4. ERC20 Token Standard Compliance: Adheres to the ERC20 standard for token implementation, ensuring compatibility with a wide range of Ethereum-based services and wallets.

Key Components

  1. ERC20 Token Functionality: Implements standard ERC20 functions such as transfer, balanceOf, and allowance.

  2. Oracle Integration:

    • Morpheus Oracles: Interacts with Morpheus Oracles to request real-time data feeds.

    • Dynamic Data Update Mechanisms: Functions like updatePrice and updateFeeds for managing data updates from Oracles.

  3. Insurance Contract Features:

    • Initialization: Sets up insurance contracts with parameters like expiry, claim value, collateral token, and Oracle details.

    • Minting and Collateral Management: Users can mint insurance tokens by depositing collateral.

    • Claim and Settlement: Provides functionality for claiming insurance based on predefined conditions and Oracle data.

  4. Event Emissions:

    • Emits events such as Initialized, Minted, Delta, Unlocked, and Redeemed for various contract actions.

InsureHedgeFactory Contract

This contract facilitates the creation of HedgeInsure contracts, allowing users to deploy new insurance product contracts with specific parameters.

Key Features

  1. Creation of HedgeInsure Contracts: Streamlines the process of setting up new insurance products.

  2. Storage of Deployed Contracts: Maintains a record of all deployed HedgeInsure contracts.

  3. Event Emissions: Emits deltaDeployed event upon the creation of a new HedgeInsure contract.

Oracle Use

  • Real-time Data for Contract Adjustment: Ensures that insurance contracts are dynamically adjusted based on real-time market data or other relevant external data points.

  • Enhanced Reliability and Trust: The integration with Morpheus Oracle enhances the trustworthiness and reliability of the insurance products, providing up-to-date and accurate data for contract settlement.

Overall, the HedgeInsure contract introduces a novel approach to creating blockchain-based financial instruments that mimic traditional insurance products, leveraging ERC20 token standards and Oracle integration for a seamless and robust financial experience.

Veryfi Contract: Empowering Cross-Chain Balance Verification

The Veryfi contract, developed as part of Scry's diverse range of smart contracts, is a sophisticated tool designed for verifying token balances across multiple blockchain networks. Integrating seamlessly with the Morpheus Oracle, it stands out as a significant innovation in the decentralized finance (DeFi) landscape.

Key Features

Cross-Chain Balance Queries

  • Multi-Chain Support: The contract is adept at handling balance queries across any EVM blockchains, making it a versatile tool in the DeFi space.

  • User-Focused Queries: Users can request the balance of any ERC20/721 token on supported chains, both for their own addresses and others.

ERC20 Token Compatibility

  • Broad Applicability: Adhering to the ERC20 token standard, the contract ensures compatibility with a wide array of tokens across the ecosystem.

Core Components and Functionalities

Contract Structure

  • Organized Balance Storage: Efficiently stores and manages user balance data for quick access and updates.

  • Diverse Chain RPCs: Supports a range of blockchains by maintaining a list of RPC URLs, demonstrating the contract's adaptability.

Fundamental Functions

  • Balance Requests: Functions getMyBalance and getBalance enable users to initiate balance checks for any specified ERC20 token.

  • Balance Updates: Functions setMyBalance and setBalance update the stored balances in the contract based on the latest data from the Morpheus Oracle.

Administrative Flexibility

  • Ownership Management: Includes features for transferring ownership and modifying essential parameters like fees and Oracle addresses.

  • RPC Adjustments: Permits the owner to update RPC URLs for each blockchain, ensuring the contract's relevance with evolving blockchain infrastructures.

Oracle Utilization

  • Data Accuracy and Timeliness: The Morpheus Oracle is critical in providing current and reliable balance information, essential for effective DeFi operations.

  • Adaptive Data Retrieval: The contract's dynamic interaction with the Oracle ensures responsiveness and utility in a rapidly changing financial ecosystem.

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