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: 1836
Hash: 3806e6f0baa289a22be91b073b8f09dfb9a55b25bb23d5f7302faedb667f9366
Previous block: 4a696f25a1e6ec757ac7b2948f5e871860f61fd6a178baf26b2fe853ecfefc55
Next block: 42c9b24badbe912ac44cb4df27189f607300e96d573ca55fa00ab144c3d133bd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159229
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c31c642f6063171c8193f490dabd14aa4227039ba88fd2f0e63585281e001b2c
Median time: 1719159228
Difficulty: 4.656542373906925e-10
Confirmations: 408
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e5a
Bits: 207fffff