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: 501
Hash: 794ae3dc14951649b25801e749a6b38e16117576531cf26f9fd3eb1de27ff917
Previous block: 3d6888258a8a549ef607f0fce1d07f64894b17f61f9905f47a29aa88773b38e9
Next block: 7fab41bba0a1728f6012d797a71fa4c5fbc4607f6f4219c72189d2f8c72ebc0b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864227
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 0ce4b60b44ec668b742e6b10c9156842eb33922cadde25b94b0abb2804a33fcb
Median time: 1701864226
Difficulty: 4.656542373906925e-10
Confirmations: 1743
Chainwork: 00000000000000000000000000000000000000000000000000000000000003ec
Bits: 207fffff