How to Read a Crypto Transaction on a Block Explorer

Q: How to Read a Crypto Transaction on a Block Explorer

A block explorer shows every detail of a crypto transaction. Here's how to read what each field means and verify any transaction.

Question from BitcoinTalk: “Someone sent me BTC but I can’t see it. How do I use a block explorer to check?”

Short answer: A block explorer shows the full life of a transaction. Enter the TXID (transaction hash) on the correct explorer (Mempool.space for Bitcoin, Etherscan for Ethereum). Check “Status” = Confirmed, “To” = your address, “Value” = correct amount. If it’s confirmed and shows your address, the crypto is in your wallet.

Anatomy of a Transaction

Every blockchain transaction has the same structure:

Transaction Hash (TXID) — Unique identifier (like a receipt number)
Status — Pending, Confirmed, or Failed
Block — Which block included the transaction
Timestamp — When it was processed
From — The sender’s address
To — The receiver’s address
Value — Amount transferred
Fee — Network fee paid by the sender

Reading a Bitcoin Transaction

On Mempool.space, a Bitcoin transaction shows:

Inputs — Which UTXOs (unspent outputs) are being spent
Outputs — Where the BTC is going (receiver + change back to sender)
Fee rate — Satoshis per vbyte (higher = faster confirmation)
Size — Transaction size in virtual bytes (larger = higher fee)
Confirmations — How many blocks have been mined since

What to verify:

Your address appears in one of the outputs
The value going to your address matches the expected amount
Status shows at least 1 confirmation

Reading an Ethereum Transaction

On Etherscan, an Ethereum transaction shows:

Transaction Hash — Unique ID
Status — Success or Failed
Block — Block number (e.g., 20,123,456)
From/To — Sender and receiver
Value — ETH amount (in ETH or Wei)
Gas Used — Actual gas consumed (usually 21,000 for simple transfers)
Gas Price — Price paid per unit of gas (in Gwei)
Transaction Fee — Gas Used × Gas Price

For ERC-20 token transfers: Check the “Token Transfer” tab — ERC-20 transfers don’t show in the main ETH value field.

Common Fields on Any Explorer

Field	What It Means	Why Check It
TXID / Hash	Transaction ID	Bookmark for tracking
Status / Result	Success / Pending / Failed	Did the transaction go through?
Block	Block number that included this tx	How many confirmations?
From	Sender’s address	Is this the expected sender?
To	Receiver’s address	Is this your address?
Value	Amount transferred	Is the amount correct?
Fee	Network fee	Did the sender pay enough?
Token Transfer	Token details	For USDC, USDT, other tokens

Using Explorers for Each Blockchain

Blockchain	Best Explorer	What to Check
Bitcoin	Mempool.space	Fee rate, confirmation count
Ethereum	Etherscan.io	Gas used, token transfers
Solana	Solscan.io	Transaction status, account changes
Polygon	Polygonscan.com	Similar to Etherscan
BNB Chain	Bscscan.com	Similar to Etherscan
Arbitrum	Arbiscan.io	L1 and L2 fees
Optimism	Optimistic.etherscan.io	L1 and L2 fees

How to Verify a Payment

Get the TXID from the sender
Go to the correct explorer for that blockchain
Paste the TXID in the search bar
Check: STATUS = Confirmed
Check: TO = your address (exact match)
Check: VALUE = correct amount
Check: CONFIRMATIONS = at least 1 (wait for 6 for high-value)

Red Flags

Unconfirmed for hours — Check mempool congestion
Status = Failed — Internal error, transaction didn’t process
Wrong TO address — Confirm the address character by character
Token transfer tab is empty — For ERC-20 tokens, check the tab specifically

Verdict

A block explorer is the most important verification tool in crypto. If you can read a transaction on the explorer, you never need to trust someone’s word that they sent payment. Always verify the TO address, the value, and the confirmation status.