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: 1014
Hash: 10a92bd1e56808e5811fb43792fe9437deaf94b532ff83aeed02c0b04e63248f
Previous block: 52a648833dc792d69e913a7151dbd735537b91f3a185acea00b3efffd5b120c3
Next block: 3a73e7361cf9534f8dbfdc27465ba799dc76429819f2ee53f36c6e894f1b2c20
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857837
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6203db77f445bdadfb8f9e00b0b30c23d14845666c3bbe54a838f11a7eae7f78
Median time: 1707857837
Difficulty: 4.656542373906925e-10
Confirmations: 1230
Chainwork: 00000000000000000000000000000000000000000000000000000000000007ee
Bits: 207fffff