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: 1004
Hash: 3f140aaabcb02ed22903050afcda4d10cc170cbfb71db3d0515768154284e996
Previous block: 3fc3c9e1067f6d540271bc3d33603ee969dafdafe7793dfe5a2a1058cbe20d8b
Next block: 18277cac79bc5bcb493af6f98d30f10f802358f6097d330289ac3d1bfa882fa7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857836
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1fe3ea780ee703e3aeabca7f53ab29e89c49cabf3a1483b6f4f54df1909eb16a
Median time: 1707857835
Difficulty: 4.656542373906925e-10
Confirmations: 1240
Chainwork: 00000000000000000000000000000000000000000000000000000000000007da
Bits: 207fffff