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: 1813
Hash: 6d1555bf5f9d2d41c250a3fcf7c8026b88fde007e17184ff4f887a1001aec8f9
Previous block: 7c5a3b3e703de9ef4da233d8e01b5635b1f884ae5c571deecf5903efd7d29165
Next block: 64971de98db4b74fc904a5b461aa53abdf30d4e9254f8acfdc0111b6b3250901
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159225
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a4b1dbcda8da0239f922b46b49e98336ecd91a8c395dd4214c84fa44365384f8
Median time: 1719159225
Difficulty: 4.656542373906925e-10
Confirmations: 431
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e2c
Bits: 207fffff