
Encoding refers to the process of converting information into a standardized format that computers and networks can accurately store, transmit, and retrieve. These standardized conventions are called encoding rules, which apply to text, numbers, images, and are widely used in blockchain for addresses and transaction data.
In the blockchain ecosystem, encoding acts like a unified template. When data is formatted according to the same rule, wallets, nodes, and smart contracts can interpret it consistently—minimizing miscommunication and ambiguity.
Encoding is about “changing the format”, while encryption is about “locking” data. Encoding focuses on compatibility and parsing, such as saving text in the universal UTF-8 format; encryption focuses on confidentiality, where only those with the proper key can access the content.
Hashing is another commonly confused concept. Hashing acts more like a “fingerprint”, compressing data into a fixed-length digest—such as SHA-256—to verify integrity, but it cannot restore the original input.
A typical comparison: Base64 is encoding—it transforms binary content into printable characters for transmission; AES is an encryption algorithm—it renders content unreadable without a key; SHA-256 is a hash function used for data consistency checks.
The encoding of an address determines its visual format and how systems verify its correctness. Ethereum addresses commonly begin with “0x”, using hexadecimal notation (numbers 0-9 and letters a-f). Many wallets display Ethereum addresses with mixed uppercase and lowercase letters due to EIP-55 checksum encoding, which helps detect entry errors.
Bitcoin addresses have two prevalent encodings. Base58Check omits easily confused characters (such as 0 vs O, I vs l) and adds a checksum at the end to help verify address validity. Bech32 addresses typically start with “bc1”, featuring a human-readable prefix and strong checksum for compatibility with features like SegWit.
Other chains also use distinct address encodings. For example, TRON addresses often start with “T” and use Base58; Solana also widely adopts Base58; BSC addresses resemble Ethereum’s “0x” hexadecimal format. Different prefixes and lengths signal different encodings and networks.
Smart contracts require transaction parameters to be “packed according to rules” known as ABI encoding. ABI can be likened to a shipping label with fixed fields: each field has a position, length, and type. Wallets pack recipient addresses, amounts, and other parameters into hexadecimal data per ABI specifications, then send it with the transaction.
For example, when executing an ERC-20 token transfer, typical parameters are the recipient address and amount. Wallets encode these via ABI into a long hexadecimal string beginning with “0x”. Blockchain nodes unpack this using the same rules, enabling precise processing by smart contracts.
The benefit of ABI encoding is that it allows different wallets and nodes to interpret the same data set, enhancing interoperability and reducing format-related errors.
An NFT’s image, name, description, and other information depend on metadata encoding. The most common approach uses JSON text encoding—a form-based text structure with named fields that is easy to read and parse.
Images may be stored on IPFS or web servers, with their links referenced in metadata. Sometimes images are directly embedded in metadata using Base64 encoding, eliminating external links but increasing file size. Text content typically uses UTF-8 encoding to ensure proper display of multilingual characters; otherwise, unreadable symbols or garbled text may appear.
If metadata encoding is inconsistent, platforms may fail to display NFTs correctly—resulting in missing images, abnormal names, or scrambled attributes.
During deposits and withdrawals, address encoding must match the network—otherwise the system cannot recognize the address, risking asset loss. For example, Gate’s deposit page clearly indicates available networks and corresponding address formats; following these prompts reduces error rates.
Step 1: On Gate, select the correct network (such as ETH mainnet, BTC, TRON); each uses different address encoding.
Step 2: Verify address prefix and length. ETH commonly uses “0x”, BTC may use “1”, “3”, or “bc1”, TRON typically uses “T”. Prefix mismatches indicate a network mismatch.
Step 3: Confirm if extra fields are required—such as Memo or Tag for XRP or XLM. While not part of address encoding itself, these are essential for transaction identification.
Step 4: Test with a small amount first. Use a minimal transfer to verify correct delivery before sending larger sums to avoid irreversible losses.
Step 5: Save your transaction hash. A hash acts as a “transaction ID” traceable on-chain; useful for customer support if issues arise.
As of 2025, most major wallets display checksum information (such as Ethereum address case sensitivity), closely tied to address encoding and helpful in catching input mistakes.
Hexadecimal encoding: Prefixed by “0x”, optimized for machine processing and contract parameters. It is compact but less human-readable.
Base58 encoding: Removes ambiguous characters; easier for humans to copy and verify; often used for address display.
Bech32 encoding: Begins with a human-readable part and includes strong checksums—ideal for modern Bitcoin addresses with robust error detection.
UTF-8 encoding: Universal text encoding suitable for NFT names/descriptions and contract event logs in multiple languages.
Base64 encoding: Converts binary data into text—useful for embedding images or small files in JSON metadata but increases size.
Selection guidelines: Use hexadecimal and ABI for contracts and transaction parameters; Base58 or Bech32 for user-facing address copying; UTF-8 for textual data; Base64 when embedding files in text—but watch out for performance and file size issues.
Mistaking encoding for encryption may create a false sense of security—“unreadable means safe”—which is unreliable. Without cryptographic key protection, encoded data remains accessible or decipherable.
For cross-network transfers, acting solely based on visual similarity of addresses risks asset loss due to mismatched encoding or networks. Always verify network, prefix, and whether Memo or Tag is required.
Clipboard malware may alter copied addresses—replacing visually “normal” encoded addresses with attacker-controlled ones. Prefer QR scanning or whitelisted selections; if manual copying is unavoidable, always verify several characters at both ends and use checksum features.
The core of encoding is "writing according to unified rules" so systems can accurately exchange data. In Web3, it governs address display, transaction parameter packing, message signature formats, and NFT metadata presentation. Understanding the distinctions between encoding, encryption, and hashing is foundational to avoiding operational errors or network mismatches.
A learning path starts by identifying common address encodings; practice an ERC-20 transfer to observe how wallets generate ABI encoded data; then create or review an NFT’s JSON metadata to see UTF-8/Base64 in action; finally apply this knowledge to Gate’s deposit/withdrawal process by testing small transfers and using checksums for increased safety.
No. Encoding converts data into a specific format for storage or transmission; encryption protects data privacy using cryptographic keys. Simply put: encoding is “translation”, encryption is “locking”. Blockchain addresses use Base58 encoding for readability, while private keys require encryption—both are essential.
This is due to Base58 encoding. The blockchain stores long hexadecimal strings, but wallets use Base58 to convert them into mixed alphanumeric formats that are easier to read and input—also avoiding confusing characters like 0 (zero) and O (capital o).
Encoding unifies diverse data formats into a binary format recognizable by the blockchain. When you send values like amounts, recipient addresses, timestamps—they must be encoded so the blockchain network can transmit and confirm them correctly. Without encoding, your transaction content would not be understood by the network.
It can result in asset loss. For example, during cross-chain transfers—if you send from a chain using UTF-8 but the receiving chain expects Base58—the data won’t parse correctly and funds may not arrive. Always confirm address encoding matches when depositing or withdrawing on exchanges like Gate; incorrect encoding cannot be undone.
No. Gb18030 is a Chinese national standard character set used mainly in Chinese systems. The blockchain ecosystem relies on international standards like Base58, Base64, Hexadecimal (Hex), etc. Using the wrong encoding disrupts global node synchronization—potentially causing serious issues.


