Glossary

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A

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Address Book

A simple-to-use withdrawal address manager, similar to a contacts list on your phone. It acts as a comprehensive directory to store, organize, and access your known withdrawal addresses. Address Book simplifies the intricate process of dealing with lengthy alphanumeric addresses, facilitating more efficient and secure transactions.

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API key

An API key is the public key in a cryptographic key pair. It is used to identify the client making the API request. An API key is associated with permissions and wallet scopes, which define the actions the client can perform and the wallets they can access. Different API keys can be assigned with varying permissions and wallet scopes, providing granular control over client capabilities.

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Approval quorum

The minimum number of approvers required to authorize a transaction or policy change in Cobo Portal. This helps maintain security by ensuring that critical actions require consensus from multiple authorized parties.

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Asset Wallets

Asset Wallets are a subtype of Custodial Wallets, which allow you to transfer tokens (initiate deposits or withdrawals). You may create multiple wallets according to your business needs.

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C

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Cobo Connect

Cobo Connect is a Chrome extension that enables you to connect your Cobo Portal wallets with dApps. After you make the connection, Cobo Connect will identify each transaction and message from the dApps and process them based on your pre-configured risk control policies in Cobo Portal.

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Portal Mobile

Portal Mobile is a multifunctional security mobile application available on iOS and Android, designed to elevate the safety and protection of your digital assets on the go. It functions as an MPC key share manager and a multi-factor authentication (MFA) method for approvals on operations, including login and transactions.

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Cobo Portal

Cobo Portal is an all-in-one platform designed to provide a secure and efficient way to manage your digital assets. With its battle-tested security architecture and unparalleled support for tokens and chains, Cobo Portal offers a range of crypto wallets to cater to your specific needs. Additionally, it offers a wide array of features, including comprehensive risk controls, seamless access to Web3/DeFi networks, intuitive data dashboards, and a rich selection of both Cobo and third-party applications.

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Custodial Wallets

A wallet type where Cobo maintains custody of the private keys, offering institutional-grade security and simplified asset management. Cobo offers two types of Custodial Wallets: Asset Wallets and Web3 Wallets.

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E

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Exchange Wallets

A wallet type that consolidates multiple exchange accounts into a single interface, allowing you to view and manage assets across different exchanges and transfer funds seamlessly between exchange accounts and other wallets on Cobo Portal.

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Externally Owned Accounts (EOAs)

A standard Ethereum account controlled by a private key that can initiate transactions. Unlike smart contract wallets, EOAs cannot execute custom logic or implement advanced security features.

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G

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Gas fees

The cost required to perform a transaction on the blockchain network.

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Gas limits

The maximum number of gas units you are willing to pay for the execution of a transaction on Ethereum Virtual Machine (EVM) chains.

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Governance policies

Governance policies determine the approval rules under which an operation will be approved or rejected. Approval rules include auto rejection, auto approval, approval quorum, and customized workflow.

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M

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Main Account

The primary account in an Exchange Wallet that holds full control over all assets and operations within its associated Sub Accounts.

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Main Key

A type of key within a Multi-Party Computation (MPC) system where key share holders are responsible for signing transactions, as well as creating and managing other keys to maintain the system’s governance and operational integrity.

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Mobile signers

A mobile signer is an organization member who uses Portal Mobile to securely sign transactions.

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MPC Wallets

A wallet type that uses Multi-Party Computation (MPC) technology to secure digital assets. Cobo offers Organization-Controlled Wallets.

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Multi-Party Computation (MPC)

A cryptographic technology used for key management on the blockchain. With MPC, key shares are created separately in secure environments, encrypted, and shared among multiple parties. Transactions are processed using these distributed key shares, without any key share being revealed or the full private key ever being assembled.

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Multi-sig transaction

A multi-signature (multi-sig) transaction requires multiple key share holders to sign the transaction before it can be executed, rather than relying on a single signature from one key.

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O

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Organization

A top-level entity in Cobo Portal. Each organization independently manages its wallets, policies, and operations within the Cobo Portal ecosystem.

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Organization-Controlled Wallets

A type of MPC Wallets where the ownership and management of digital assets lie with the organization.

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R

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Recovery Key

A type of key within a Multi-Party Computation (MPC) system where key share holders are responsible for restoring access to the wallet or system in the event of lost or compromised key shares.

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Risk Control

A comprehensive set of mechanisms designed to address the challenges in storing, managing, and transferring digital assets, including transaction policies, governance policies, as well as user roles and permissions.

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S

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Safe{Wallet}

Safe{Wallet} is a leading multi-signature wallet and platform for securely storing digital assets on Ethereum and other popular EVM chains.

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Server signers

A server signer is a server node that stores the key shares of your MPC Wallets. The server signer utilizes the TSS Node package to automatically sign transactions initiated by your MPC Wallets.

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Signer address

The addresses of participants who are authorized to initiate, sign, and execute transactions within a Safe{Wallet}. On Cobo Portal, the signer addresses can be from either MPC Wallets (Organization-Controlled) or external owned accounts (EOAs) outside of Cobo Portal.

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Signing Key

A type of key within a Multi-Party Computation (MPC) system where key share holders are responsible for collaboratively signing transactions.

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Single-sig transaction

A single-signature (single-sig) transaction requires just one key share holder to sign a transaction before it can be executed.

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Sub Account

A Sub Account is a subordinate account within an Exchange Wallet, created and managed under the authority and control of its Main Account.

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T

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Threshold

The threshold of a Safe{Wallet} defines the number of signer addresses that must approve a transaction before it can be executed.

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Transaction policy

Transaction policies in Cobo Portal are managed on the backend, allowing you to define rules that govern the handling and approval of transactions. These policies can control transaction limits, frequency, whitelists, and more.

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Transaction category

A user-defined label used in Cobo Portal to classify and organize transfers within an organization, enabling easier identification and management of transactions.

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Threshold Signature Scheme (TSS)

A type of digital signature protocol used by MPC Wallets that allows distributed parties to each contribute independently to a transaction’s signature. In the MPC-TSS setup, a flexible threshold signature scheme (“m out of n” key shares) can be implemented. For instance, in a 2-2 signature scheme, two private key shares will be generated independently and both key shares will be required to authorize each transaction.

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TSS Node

A TSS Node is a component of MPC Wallets that generates and manages private key shares. It connects with Cobo Portal to perform cryptographic operations such as key generation, transaction signing, and key resharing. A TSS Node can be implemented as either a mobile application (Portal Mobile) or a server node with the TSS Node package installed.

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V

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Vaults

A vault contains a collection of MPC Wallets sharing the same root extended private key.

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W

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Web3 Wallets

Web3 Wallets are a type of Custodial Wallets that allow token transfers, contract calls, and message signing.

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Webhooks

In Cobo Portal, webhooks provide real-time notifications for events such as transaction status updates.