Supporting transactions#
A wallet’s fundamental purpose is to construct, sign, and broadcast transactions. Each user-facing feature you implement will require your wallet to generate a specific type of transaction payload.
The following section lists the core transaction types you can support.
Transaction types#
1. Simple transfer
This is the most fundamental transaction type, used for sending the native CCD token from one account to another. It is a straightforward value transfer, equivalent to a standard payment on other blockchains.
2. Smart contract transactions
This category covers all interactions with smart contracts. It enables users to interact with dApps and manage tokens built on the CIS-2 standard (Concordium’s universal token standard for Fungible, Non-Fungible, and Semi-Fungible tokens). Common actions include:
Deploying and initializing contracts
Updating contracts (e.g., calling a transfer function on a CIS-2 token)
3. Staking and delegation transactions
These transactions are essential for participating in Concordium’s proof-of-stake network. Key transactions for delegators include:
Add delegation: Staking CCD with a validator pool
Update delegation: Changing the staked amount
Remove delegation: Unstaking CCD
4. Account and identity transactions
Unique to Concordium’s architecture, this category includes the crucial create account transaction. This must be submitted with the cryptographic credential from a user’s verified identity object, linking the new account to that identity.
Protocol-level tokens#
Beyond the standard transaction types, Concordium features protocol-level tokens (PLTs), a unique class of tokens created directly at protocol level.
These tokens are distinct from user-created CIS-2 smart contract tokens. They are typically reserved for foundational assets, such as bridged tokens (e.g., wETH), that require native protocol integration.
Key advantages of PLTs#
Higher Efficiency - Because they are native to the protocol, PLT transactions consume significantly less energy, making them cheaper and faster to transfer.
Enhanced Security - PLT logic is part of the blockchain’s core code, subject to the highest levels of scrutiny, which reduces smart contract risks.
Standardized Governance - Upgrades are managed through Concordium’s established on-chain governance process, ensuring stability.
For a wallet, supporting a PLT transfer means constructing a dedicated, protocol-level transaction, which is different from the general-purpose update function used for smart contracts.
For further details on PLTs, refer to our PLT documentation.
