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: 17
Hash: 4ce5d22f6fac8c872f9fe6e452e2a5289548567eca2cca72b1e5e8d95adf379c
Previous block: 68856deceb8a73483b87085ecee464fbbd13b45f8a6d076da385deb20f681ad0
Next block: 26dc5965d49dc567a2d29d27ed9929c38412442f23cd39fb85ab0656bc88c232
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597870
Stripped size: 217
Size: 217
Nonce: 2
Merkle root: d11ce791f6ef9f4f8ce5156cda2cb8b5d8d2ca5ebc5678066bbb612099c931fa
Median time: 1701597869
Difficulty: 4.656542373906925e-10
Confirmations: 2227
Chainwork: 0000000000000000000000000000000000000000000000000000000000000024
Bits: 207fffff