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: 2040
Hash: 7f2665798f7e2876188b1522f3bf3a2caea9b08f27123c9c36012bb5590e5eab
Previous block: 4a58af52c4aa2ccfb66d6514380816aa27a120b68079725471ebc523567557cf
Next block: 1bcd0daf7737c90270c578dcc28d0180d9937fc66fba9523f19f9407e212aa83
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964777
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: d67a59372c4b2b4303052375429ada23bf5155e6160727a72f90985a1edd0d46
Median time: 1728964776
Difficulty: 4.656542373906925e-10
Confirmations: 204
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ff2
Bits: 207fffff