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: 73
Hash: 7111d3bf026d796bde1b66d02d30cc7a3760d973d584a5c7992a4381901b282d
Previous block: 42e81a23abedeb5a9aa2fd13ffde8007105280c23ccb3ab9863d94f7e4dc4037
Next block: 105b2c0450a55bdfb99d8a755c266fe2db65902755e58a39b2c8836fe8c5d103
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597879
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: c0fc304633f924b1b1c0d1ccd123bd8fec3070b7b739ab5e61fc6e25ed366930
Median time: 1701597879
Difficulty: 4.656542373906925e-10
Confirmations: 2171
Chainwork: 0000000000000000000000000000000000000000000000000000000000000094
Bits: 207fffff