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: 329
Hash: 6d4c822c3112953670ef9866dee422fb0b4fe9412fdab14533511db423be397c
Previous block: 4919e9b95181e7abf38530b9eb22136ca9865108281158216015a2a765acf473
Next block: 53203d82e946436c844aea8f05d8e493569c7ff685a4ccc9cbcd7aa706073b46
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597922
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: aa132cd6304b7e7679a82ed49d875c610c1f6ce7538dc08231482640b350de05
Median time: 1701597921
Difficulty: 4.656542373906925e-10
Confirmations: 1915
Chainwork: 0000000000000000000000000000000000000000000000000000000000000294
Bits: 207fffff