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: 2098
Hash: 306bc4a7d1f0052bfbacc4f5d89b300c8590b9f42373685e3e4a92c7b0fff9f5
Previous block: 53129d17d72e028d84aa52a354985ba160f204e4a77e8fe5368cf07105a1f63c
Next block: 239533954d2dac0f7ad72eab7e7b2e85f91eb67ad7b3c7cfae3f7f382916c6bd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964786
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 166157585088a31fbad1ef9f18f9dd792812d1651b01e2c64664c7d87ec93fbc
Median time: 1728964785
Difficulty: 4.656542373906925e-10
Confirmations: 146
Chainwork: 0000000000000000000000000000000000000000000000000000000000001066
Bits: 207fffff