Alphanumeric refers to character sequences composed of both letters and numbers, widely used in blockchain technology for wallet addresses, hash values, cryptographic keys, and smart contract code. These encoding systems (such as Base58, Base64, and hexadecimal) convert complex binary data into more readable and manageable forms through specific algorithms, while maintaining data uniqueness and security.
B
Bitcoin Wallet Address
A Bitcoin wallet address is a string of alphanumeric characters generated from a user's public key through cryptographic hash functions, serving as a unique identifier for receiving funds on the Bitcoin network. These addresses typically begin with 1 (P2PKH), 3 (P2SH), or bc1 (SegWit), contain 26-35 characters, and allow users to securely receive bitcoin without exposing their private keys.
C
Cold Crypto Wallet
A cold crypto wallet is a hardware device or method for storing cryptocurrencies offline, protecting users' private keys and digital assets through complete isolation from the internet. Cold wallets come in various forms including hardware wallets (such as Ledger and Trezor), paper wallets, and offline software solutions, with the defining characteristic being that private keys are generated and stored in an environment that remains disconnected from online networks.
Cold Storage Wallet
A cold storage wallet is a cryptocurrency storage solution that keeps private keys completely offline and isolated from the internet, significantly enhancing asset security. Cold wallets primarily include hardware wallets, paper wallets, and air-gapped computer wallets, with the core characteristic being that private keys never touch the network, effectively preventing online attacks and hacking attempts through physical isolation.
Crypto Cold Wallet
A crypto cold wallet is a secure offline storage method for cryptocurrencies that completely isolates users' private keys from the internet to prevent cyber attacks. Cold wallets primarily come in three forms: hardware devices, paper wallets, and offline software solutions, representing the highest security standard for cryptocurrency asset storage.
Custodians
Custodians are professional entities that provide secure storage and management services for cryptocurrencies and digital assets, primarily responsible for protecting users' private keys and asset security. In the blockchain ecosystem, custody services are categorized into institutional custody, exchange custody, and self-custody, serving as critical infrastructure bridging traditional finance and the crypto economy.
Custodian
A custodian is a third-party entity or service provider responsible for the secure storage and management of clients' cryptocurrency assets, utilizing specialized security infrastructure to mitigate the risks and complexities associated with self-custody of private keys. These services typically fall into two main categories: cold storage custody (offline secure storage) and hot storage custody (online immediate access).
cipher
A cipher is a mathematical algorithm that transforms plaintext information into seemingly random ciphertext, making it difficult to understand without authorization while allowing authorized parties to decrypt it using specific keys. In the blockchain domain, ciphers primarily fall into three categories: symmetric encryption (using the same key for encryption and decryption), asymmetric encryption (using public-private key pairs), and hash functions (one-way transformations), collectively forming the securi
I
ibit
The iShares Bitcoin Trust (IBIT) is an exchange-traded fund (ETF) that directly tracks the spot price of Bitcoin, managed by BlackRock and listed on the Nasdaq exchange. It allows investors to gain indirect exposure to Bitcoin by purchasing ETF shares without dealing with technical aspects like managing cryptocurrency wallets or securing private keys. The fund holds physical Bitcoin as its underlying asset, custodied by Coinbase Custody, and charges a 0.25% annual management fee.
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