# Using the Block Explorer¶

## Overview¶

There are two block explorers available for Bitum. All blocks and transactions on the Bitum blockchain are visible through the use of these block explorers.

Below is a quick review of some of the information on them.

Option Explanation
Height The block number.
Age How long ago the block was added to the blockchain.
Transactions The number of transactions included in the block.
Votes The number of proof-of-stake votes included in the block.
Fresh Stake The number of new tickets purchased in this block.
Size The size (in bytes) of the block.

Under Latest Transactions, you can see the transaction ID (txid) and the value (in BITUM) transmitted across the network.

## Blocks¶

Blocks can be found by searching for their block height number, clicking on a Height value from the home page, or from their BlockHash value. Older blocks will have lower block numbers. The top half of a block overview shows relevant information about this specific block. This information includes: the block height, the block hash, and several key network parameters, described below:

Option Explanation
Number of Transactions The number of standard transactions (BITUM sent from one user to another).
Height The height of the blockchain in which this block resides.
Block Reward The amount of new BITUM minted in this block.
Timestamp The time this block was created by a miner and was included in the blockchain.
Merkle Root A hash value of all the transaction hashes included in this block.
Stake Root A hash value of all the stake related transaction hashes in this block. This includes ticket purchases, votes, and ticket revocations.
VoteBits (1) Block was approved by proof-of-stake voters. (2) Block was vetoed by proof-of-stake voters and all non-stake transactions in the block were invalidated, along with the newly generated block reward for the proof-of-work miner and the Bitum Treasury.
Final State The final state of the pseudo random number generator used for ticket selection.
Voters The number of successful proof-of-stake votes cast in this block. The maximum value is 5.
Fresh Stake The number of stake ticket purchases confirmed in this block.
Revocations The number of tickets that failed to vote and were revoked.
PoolSize The total number of active proof-of-stake tickets.
Difficulty The proof-of-work network difficulty.
SBits The price of one proof-of-stake ticket.
Bits A compact version of the network difficulty at the time the block was mined.
Size The size of the block (in bytes).
Version The version of the block.
Nonce The value used by a miner to find the correct solution for this block.

## Transactions¶

This section lists all the transactions that were mined into this block. Transactions are chosen from the network mempool in order of highest fee first. All transactions in the block overview follow this order: Standard transactions (peer-to-peer transfer), proof-of-stake votes, proof-of-stake ticket purchases. The following sections will review each type of transaction.

### Standard transactions¶

Here’s the information included in standard Bitum transactions.

Option Explanation
Size The size of the transaction in bytes.
Fee rate The rate of fees collected by the network (per kB).
Received Time The time the network confirmed the transaction.
Mined Time The time a miner included the transaction in a block.
Included in Block The block number that the transaction became a part of.

Note Received Time, Mined Time, and Included in Block will not have a value until a miner validates the transaction and includes it in a Bitum block. After being confirmed in a block, the transaction is considered complete.

### Ticket purchases¶

For a ticket purchase (stake submission) there are a few differences from a standard transaction shown.

Note the difference under details: The word Ticket appears above the sender’s wallet address on the left, and the words Subsidy Commitment appear on the right. This particular user purchased a stake ticket for 8.75411638 BITUM and received change in the amount of 7.15994209 BITUM. The address listed on the left under Ticket is the address that contains the funds used to purchase this ticket. The first output on the right is the address that retains voting rights for this specific ticket. The second output, Subsidy Commitment, is the address where the reward will go. This is not yet shown by the block explorer at this time. The third and final output is the address where change for this transaction will be sent.

Note the identifying terms in the details section: Vote, Stake Base, Block Commitment, and Vote Bits: