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. mkrgsKuFE

Height: 1574
Hash: 58d418ef6bb3c7e6e19c3413c83c0adf98d173337949ce41ed40c964d1b052e2
Previous block: 2844bb00530cdd8bc6b0ac7ad5644b4c1d6e4a12bdf2794a335d191b19c9aa63
Next block: 1ecc050942780cd5e435298d709b69ae6f2054666ed8800a0d133e54434959da
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932132
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c2cb6231510a030e1ef81b280b7202078e6fcfb1a6a003bf47f6f9cab0790285
Median time: 1708932131
Difficulty: 4.656542373906925e-10
Confirmations: 35
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c4e
Bits: 207fffff