The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1141
Hash: 18e84c014ca429265eeb1cca72c4e61e435056a7382bdf9eed485111539b538d
Previous block: 3994d33d8ca341a311e4799002cf148a261c608b33f478f1f90a0986f1237c25
Next block: 6c2c495252fb231399977f4078508dffbbcc30cbf4d91f69b8e4595798e53242
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857859
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9650bd03c6f376017cecfbfdcea591bdebf8816653267e5d277f54367ed43651
Median time: 1707857858
Difficulty: 4.656542373906925e-10
Confirmations: 1103
Chainwork: 00000000000000000000000000000000000000000000000000000000000008ec
Bits: 207fffff