February 9, 2024

Decrypting the Types of Crypto Wallet Accounts

As we navigate the crypto landscape, crypto wallets stand as the gatekeepers, impacting the adoption ratio for the industry. Key wallet providers are making commendable efforts for the significant concern of enhancing and streamlining the user experience.

In this space, custodial wallets are user-friendly but harbor certain security risks. Conversely, self-custodial wallets are more secure, but present a usability challenge with complex mnemonic phrases and private keys. This article briefs you about various crypto wallet accounts you may use to begin your crypto journey.

The Ethereum Ecosystem

Ethereum accommodates two fundamental types:

  • Externally Owned Accounts (EOA)
  • Contract Accounts (CA)

EOAs, under the control of users through private keys, act as the initiators of transactions. In contrast, CAs, running smart contracts on the Ethereum Virtual Machine, lack the autonomy to initiate transactions.

The verification of transaction legitimacy is anchored in the external account owner's signature, underscoring the pivotal role of the private key.


Externally Owned Accounts empower users with control through a private key, functioning as a unique signature and access pass to the blockchain. Key attributes include:

  • Setup through a seed phrase for mnemonic representation and secure access.
  • Capabilities include sending/receiving transactions, managing ETH balances, and interacting with smart contracts.
  • They are marketed as software wallets (e.g., MetaMask) and hardware wallets (e.g., Trezor).

Smart Contract Accounts:

Smart Contract Accounts (SCAs) set themselves apart by being smart contracts immutably tethered to the blockchain. This unique structure enables SCAs to perform intricate functions, including gas fee savings, transaction batching, and multisig management.

Key attributes of SCAs include:

  • Empowering advanced functionalities beyond standard transactions
  • Requiring initial funds for on-chain deployment
  • Facilitating EVM ecosystem integrations and providing flexible crypto management tools

MPC Wallets

Multi-Party Computation (MPC) emerges as a cryptographic security measure. MPC wallets elevate security through decentralized key fragment calculation, offering solutions such as "multi-sig" and "cross-chain" off-chain verifications.

Key Features of MPC Wallets:

  • Breaking private keys into fragments for decentralized calculation.
  • Mitigating risks through decentralization, steering clear of single points of failure.
  • Diverging from traditional multi-signature wallets by operating off-chain without smart contract connections.

Distinguishing EOAs and Smart Contract Accounts:

  • Control: EOAs are governed by private keys, while SCAs operate based on embedded blockchain rules.
  • Creation: EOAs link private keys to seed phrases, while SCAs activate through on-chain deployment.
  • Creation: EOAs handle basic transactions and dApp interactions, while SCAs offer programmable logic and advanced Web3 and DeFi features.
  • Gas Fees: EOAs require ETH for gas on the Mainnet, whereas SCAs provide features for fee reductions.


Our exploration of crypto wallets in Web 3 underscores their pivotal role in shaping mass adoption. Balancing user-friendly interfaces with robust security measures, Ethereum's External Owned Accounts (EOAs) and Smart Contract Accounts (SCAs) showcase the centrality of private keys. Multi-Party Computation (MPC) wallets add a layer of security by decentralizing key fragment calculation, departing from traditional multi-signature models.

Our journey through crypto wallets unveils a dynamic ecosystem marked by innovation, security enhancements, and an expanding user toolkit. As we navigate Web 3, crypto wallets emerge as enablers of a new era, redefining our interaction with cryptocurrencies and promising a future where accessibility, security, and functionality harmoniously coexist.

February 9, 2024
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