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: 328
Hash: 4919e9b95181e7abf38530b9eb22136ca9865108281158216015a2a765acf473
Previous block: 4e94fdd236dd120b71b575c65efa97f2f3d3c447a9eab416e4d6a4add1c3b12e
Next block: 6d4c822c3112953670ef9866dee422fb0b4fe9412fdab14533511db423be397c
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597922
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 79356d022270a158803997886c85fa3bb18676d8d56bf6cf1943c9961d2557c9
Median time: 1701597921
Difficulty: 4.656542373906925e-10
Confirmations: 1916
Chainwork: 0000000000000000000000000000000000000000000000000000000000000292
Bits: 207fffff