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: 1319
Hash: 198d3166d56d833605649854a7d7f582c083198dde06451a0e97747e04c16de4
Previous block: 19bcc98441f934e48ea1e2a98ff02073c401a60087f3ff69b6dbc8f1257b4a1b
Next block: 70526cd5f3b2785c796c0bb8b7c88376122652f5eed57b3a10b6f020bc0afe7d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697627
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d5e08a2cb9db2f09fb6bed75df1c904b80a48beb2399fd73e932d4ed2a2aabcf
Median time: 1718697626
Difficulty: 4.656542373906925e-10
Confirmations: 925
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a50
Bits: 207fffff