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: 874
Hash: 48cb388249c59d5393d510368e30799682407469beff6ebf37a72f55623270e8
Previous block: 0f897afb31e7233aeabcb361a50a6487a4fee2725aebf1141af0a9be68f3208d
Next block: 04707794eddb9258261a8abbc3614222bd790956b7df783b514d4509ca32e0ce
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857814
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5be0e6b071c67e9590d4c00ac00fb62dcb352e917fa1e9cc0266cee5b02e255e
Median time: 1707857813
Difficulty: 4.656542373906925e-10
Confirmations: 1370
Chainwork: 00000000000000000000000000000000000000000000000000000000000006d6
Bits: 207fffff