> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockscout.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Transaction Fields Reference: Hash, Gas, Logs, State
> Reference guide to Blockscout transaction page fields including hash, status, gas, nonce, input data, token transfers, event logs, and state changes.
# Blockscout Transaction Fields Reference Guide
Example transaction on Ethereum
## Transaction Summary (Header)
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Transaction Summary** | Quick overview of transaction action | "⚡ Transfer 0.0019 ETH to 0x1e...2988" | Instant understanding of what happened |
| **Transaction Icon** | Visual indicator of transaction type | Lightning bolt (⚡) for transfers | Quick visual identification |
| **Amount Display** | Primary value being transferred | "0.0019 ETH" | Main transaction amount |
| **Recipient Address** | Shortened destination address | "0x1e...2988" with copy button | Quick recipient identification |
| **View Counter** | Number of times transaction was viewed | "👁 8" | Shows transaction popularity/interest |
## Transaction Overview Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Transaction Hash** | Unique identifier for this specific transaction | 66-character hex string starting with "0x" | Transaction's "receipt number" for tracking and reference |
| **Status and Method** | Current state and transaction type | ✅ Success | Shows whether transaction completed successfully |
| **Block** | Block number and confirmations | 22933572 | Show BlockNumber |
| **Timestamp** | When transaction was mined with confirmation time | 🕐 8m ago | Reflects timestamp: Jul 16 2025 12:33:59 PM (-06:00 UTC) |
| **Sponsored** | Advertisement or sponsored content section | Ad banner with "Advertise to" message | Supports open source block explorer |
| **From** | Sender address with label | "🔴 Huobi: Deposit Funder 7" with copy button | Identified sender (exchange, contract, etc.) |
| **To** | Recipient address | "🟡 0x1ec7cB3FE99bD07E6faBa7D296857bCC102988" with copy button | Destination address |
## Blockscout-UI Features
| Feature | Description | Location | Purpose |
| :- | :- | :- | :- |
| **Transaction Summary Line** | Quick overview with icon and key details | Top of page | Instant understanding of transaction |
| **View Counter** | Shows transaction popularity | Next to summary | Community interest indicator |
| **Address Labels** | Known entity identification | From/To fields | Better context than raw addresses |
| **Sponsored Content** | Advertisement section | Middle of details | Revenue for block explorer |
| **Copy Buttons** | Quick copy functionality | Next to addresses/hashes | User convenience |
| **Tabbed Navigation** | Organized information sections | Below summary | Easy access to different data types |
| **Color-Coded Status** | Visual status indicators | Status field | Quick success/failure identification |
| **Confirmation Speed** | Time to confirmation | Timestamp field | Network performance insight |
## Navigation Tabs
| Tab | Description | Contents | Purpose |
| :- | :- | :- | :- |
| **Details** | Main transaction information | Hash, status, block, addresses, gas, value | Primary transaction data |
| **Token transfers** | ERC token movements | Token name, amount, from/to addresses | Track token transfers separate from ETH |
| **User operations** | Account abstraction operations | User operation details for AA wallets | Advanced wallet interactions |
| **Internal txns** | Internal transactions | Contract-to-contract calls | See all sub-transactions |
| **Logs** | Event logs from contracts | Contract events and their data | Smart contract activity |
| **State** | State changes | Storage and balance modifications | What changed on the blockchain |
| **Raw trace** | Complete execution trace | Step-by-step execution details | Debug and analysis |
## Visual Elements and Icons
| Element | Description | Meaning | Context |
| :- | :- | :- | :- |
| **⚡ Lightning Icon** | Transaction type indicator | Fast/standard transaction | Used in transaction summary |
| **🔴 Red Circle** | Address label indicator | Exchange or known entity | Huobi exchange identifier |
| **🟡 Yellow Circle** | Address label indicator | Contract or user wallet | Regular address marker |
| **✅ Green Checkmark** | Success status | Transaction completed successfully | Status indicator |
| **👁 Eye Icon** | View counter | Number of page views | Popularity metric |
| **📋 Copy Button** | Copy to clipboard | Click to copy address/hash | User convenience |
| **🕐 Clock Icon** | Timestamp indicator | Time-related information | Timing reference |
## Transaction Details Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **From Address** | Wallet address that initiated the transaction | Labeled address with copy button | Identifies the sender with context |
| **To Address** | Destination address for the transaction | Labeled address with copy button | Identifies recipient with context |
| **Value** | Amount of native currency (ETH) transferred | ETH amount with USD equivalent | Shows direct ETH transfer (separate from token transfers) |
| **Transaction Fee** | Total cost paid to miners/validators | ETH amount with USD equivalent | Total processing cost |
| **Nonce** | Sequential counter for transactions from sending address | Number (e.g., 1,247) | Prevents replay attacks and ensures ordering |
## Gas Information Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Gas Limit** | Maximum gas the sender was willing to pay | Number (e.g., 21,000) | Upper bound on computational work |
| **Gas Used** | Actual gas consumed by the transaction | Number with percentage (e.g., 21,000 (100%)) | Actual computational work performed |
| **Gas Price** | Price per unit of gas | Gwei amount (e.g., 20.5 Gwei) | Cost per unit of computation |
| **Max Fee Per Gas** | Maximum fee willing to pay per gas unit (Type 2) | Gwei amount (e.g., 25 Gwei) | EIP-1559 fee mechanism for predictable fees |
| **Max Priority Fee** | Maximum tip willing to pay to miners (Type 2) | Gwei amount (e.g., 2 Gwei) | Incentivizes miners to include transaction quickly |
| **Base Fee Per Gas** | Network's base fee at transaction time (Type 2) | Gwei amount (e.g., 18.5 Gwei) | Burned portion of fee (not given to miners) |
## Transaction Type Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Transaction Type** | EIP standard used for this transaction | Type 0, Type 1, Type 2 | Indicates fee mechanism and features |
| **Type 0** | Legacy transactions | Standard format | Original transaction format |
| **Type 1** | EIP-2930 (Access List) | With access list | Gas optimization for contract interactions |
| **Type 2** | EIP-1559 (Dynamic Fee) | With base fee and priority fee | More predictable fee mechanism |
| Type 3 | EIP-4844
(Blobs) | Blob carrying transaction | Accommodate batched data |
## Input Data Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Input Data** | Data payload sent with transaction | Hexadecimal string | Contains function calls and parameters |
| **Method ID** | First 4 bytes identifying contract function | 4-byte hex (e.g., 0xa9059cbb) | Identifies which contract function was called |
| **Input Data (Hex)** | Raw hexadecimal data | 0x followed by hex characters | Raw transaction data |
| **Input Data (UTF-8)** | Human-readable text format | Plain text (when applicable) | Readable version of data |
| **Input Data (Decoded)** | Function calls with parameter names | Function name and parameters | User-friendly view of contract interactions |
## Token Transfer Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Token Name** | Name of the transferred token | Text (e.g., "USD Coin") | Identifies the token being transferred |
| **Token Symbol** | Token's ticker symbol | Text (e.g., "USDC") | Short identifier for the token |
| **Token Amount** | Quantity of tokens transferred | Number with decimals | Amount being moved |
| **Token Type** | Standard used for the token | ERC-20, ERC-721, ERC-1155 | Indicates token functionality |
| **From Address** | Token sender address | 42-character hex string | Who sent the tokens |
| **To Address** | Token recipient address | 42-character hex string | Who received the tokens |
| **Token Contract** | Address of the token's smart contract | 42-character hex string | Contract managing this token |
## Event Logs Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Log Index** | Sequential numbering of events | Number (e.g., 0, 1, 2) | Order of events within transaction |
| **Contract Address** | Address that emitted the event | 42-character hex string | Source of the event |
| **Event Name** | Name of the emitted event | Text (e.g., "Transfer") | Type of event that occurred |
| **Topics** | Indexed event parameters | Array of hex strings | Searchable event data |
| **Data** | Non-indexed event data | Hex string | Additional event information |
| **Decoded Logs** | Human-readable event information | Structured data | User-friendly view of events |
## State Changes Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Address** | Account that changed | 42-character hex string | Which account was modified |
| **Storage Changes** | Before and after values | Hex values | What data changed in storage |
| **Balance Changes** | ETH balance modifications | ETH amounts | How balances changed |
| **Nonce Changes** | Account nonce updates | Number changes | Transaction counter updates |
## Status Indicators
| Status | Visual Indicator | Meaning | Next Steps |
| :- | :- | :- | :- |
| **Success** | Green checkmark | Transaction completed successfully | Transaction is final |
| **Failed** | Red X | Transaction failed during execution | Check revert reason, retry if needed |
| **Pending** | Orange clock | Transaction waiting to be mined | Wait for confirmation or increase gas |
| **Dropped** | Gray indicator | Transaction removed from mempool | Resubmit with higher gas price |
## Additional Information Fields
| Field | Description | Format/Example | Purpose |
| :- | :- | :- | :- |
| **Block Hash** | Unique identifier for the block | 66-character hex string | Reference to containing block |
| **Block Timestamp** | When the block was mined | UTC timestamp | Block creation time |
| **Transaction Receipt** | Proof of transaction processing | JSON data | Technical execution details |
| **Raw Transaction** | Complete transaction data | JSON format | Developer-level transaction info |
| **Revert Reason** | Error message for failed transactions | Text description | Explains why transaction failed |
## Common Transaction Patterns
| Pattern | From Address | To Address | Value | Input Data | Tokens Transferred |
| :- | :- | :- | :- | :- | :- |
| **Simple ETH Transfer** | User wallet | User wallet | > 0 ETH | Empty/minimal | None |
| **Token Transfer** | User wallet | Token contract | 0 ETH | Function call | Token amount |
| **Contract Interaction** | User wallet | Contract | 0 ETH | Function data | Possibly tokens |
| **Contract Creation** | User wallet | null | 0 ETH | Contract bytecode | None |
| **Multi-token Transfer** | User wallet | Contract | 0 ETH | Function call | Multiple tokens |
## Troubleshooting Guide
| Issue | Possible Causes | What to Check |
| :- | :- | :- |
| **Transaction Not Found** | Wrong hash, wrong network, too recent | Verify hash, check network, wait for indexing |
| **Failed Transaction** | Out of gas, revert, invalid input | Check gas limit, read revert reason, verify input |
| **High Gas Fees** | Network congestion, complex operation | Check gas price, simplify transaction, wait for lower fees |
| **Pending Too Long** | Low gas price, network issues | Increase gas price, check network status |
| **Wrong Token Amount** | Decimal confusion, display issue | Check token decimals, verify actual amount |
**Quick Reference:** Use Ctrl+F to search for specific field names in this guide. All fields are organized by the section they appear in on the Blockscout transaction page.
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