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: 1745
Hash: 158cd4490a299853445e00269f688aeac4bd1ff945f29445a0ced10f4de5d611
Previous block: 7f89ff2083e91456c323dc26982920a96a00bcb1350216e063d20e7de50c55b9
Next block: 6e80015ffaa2e6a302ca9edfd7867922712d4393646af3eb6697d459677bcc93
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159214
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8e8a4ed05dc98e1ba0e950516767bc1320f9d6eb6fe78c1c75125821cec59e7e
Median time: 1719159213
Difficulty: 4.656542373906925e-10
Confirmations: 499
Chainwork: 0000000000000000000000000000000000000000000000000000000000000da4
Bits: 207fffff