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: 12
Hash: 6af950307b7b7327e9c590b86ae0e81c3b2f4bd95f451f48b1bb526c48ca1573
Previous block: 0d128abf4e783e30ef4f497750e63197dfe2f2233980630fa3884abf2be31d84
Next block: 2c5c7bde9ecf95b823b4325b8acb86f59176dd945079177df714c30c21b2b1ad
Weight: 864
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597869
Stripped size: 216
Size: 216
Nonce: 1
Merkle root: ce0e6c46220ce1af3024b9a1b4aebd7c2f32cc33f33e1aa43b5a64506d2b55da
Median time: 1701597868
Difficulty: 4.656542373906925e-10
Confirmations: 2232
Chainwork: 000000000000000000000000000000000000000000000000000000000000001a
Bits: 207fffff