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: 1614
Hash: 45c00f43ea6f9e9da45ad6b28060714b3cd307f73d10e63175fd651dcc803283
Previous block: 59adc8826fee88ec6b259ec4d3f4ee1793c7baf41365a0a6819ff79c1b61f9c3
Next block: 6471d6c07f2b792f25b9062402c4ddda2f628a21b6e7a33c4c59a0571c91de1f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159192
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: cb1afc6743cd3531a0583005c88810b2a114fe8e8fbab89065b43399cfe4b894
Median time: 1718709062
Difficulty: 4.656542373906925e-10
Confirmations: 630
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c9e
Bits: 207fffff