Blocks

Blocks are the building blocks of blockchains and rollups. A block contains transactions which contains instructions which will alter the state of the solana blockchain incrementally. Transactions within a block can only be executed one after the other, not in parallel. Instructions within a transaction can only be executed one after the other, not in parallel.

Learn more in the official Solana documentation here.

Table Columns

Column Name	Description	Example
slot	The time of the slot and also block. Within the time window of a slot a block may or may not be proposed and voted upon. Only non-empty slots are indexed.	276304227
height	The number of blocks beneath the current block. The first block after the genesis block has height one. height < slot as some each slot as at most 1 block. blocks < 81032053 have no block height	255661589
timestamp	The time when the slot was included on the blockchain. blocks < 39824214 have no block timestamp	2024-07-08 02:16:54.000
hash	Unique identifier for that slot. (base58)	36KR3aiVEZYSJDb8wgWBWpXbYykuz3BJagFRMhFijKxA
parent_slot	Slot number of the non-empty slot preceding this slot	276304226
previous_block_hash	Unique identifier of the non-empty slot preceding this slot	2ymHtgWXKxVf5BVVdt34onGrkUm7oDCHTMBBzkJt1rsV
transaction_count	Number of transactions in the block	875
nonvoting_transaction_count	Number of nonvoting transactions in the block	441
reward_count	Number of rewards in the block	1