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: 2025
Hash: 3df8987587e263f24df85f3d842a36fbf0fb099ba0714ae57dcc29448c508066
Previous block: 387be09ec9c79af2cf1379b705b69d672d69e3fb6ff75a9fa953fb72512bd7c5
Next block: 6c7f9b9bed387059c45967370b8922425ed30d8e4fdfda98c79a2e503a8a05b0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964774
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: f139229e83a73cfa3850da7500824d11729b72d3231ab1d8f2e3c4390c8e153e
Median time: 1728964773
Difficulty: 4.656542373906925e-10
Confirmations: 219
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fd4
Bits: 207fffff