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: 1963
Hash: 1c0e765280198b11296cdf4d75103c1a20d02f2965f57c85bb6802e63da6105a
Previous block: 400b3b8801a4858a13ba32e9051f95fc9e9c5f6587442c98d460558e69d9d100
Next block: 4bdfb31bc4f55c50dd0e593d442944d0ad2119f40330c4a1a165fe5e013344e8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159250
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: da0a3acd45a88badde12375ab350c7ab6738f4a2e0b478105cfc3a3a49e740f2
Median time: 1719159250
Difficulty: 4.656542373906925e-10
Confirmations: 281
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f58
Bits: 207fffff