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: 165
Hash: 6a7e7e536fd902054459029b6fe001571ee518c4ce865bb5cf20258312acb21c
Previous block: 747d649cd102e32b6a7154dd755f1ccabc0e96a24425dfd752c79fe39bcf176a
Next block: 251708b46785251e1061c2db9d03e0f5b0e7b47166c2cc451904e507522087eb
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597895
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: d640a329bf5987f5cf1200be5224774c943fa6769abf793640cdf575705b2122
Median time: 1701597894
Difficulty: 4.656542373906925e-10
Confirmations: 2079
Chainwork: 000000000000000000000000000000000000000000000000000000000000014c
Bits: 207fffff