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: 745
Hash: 2fe8892b93208d2f3e2627d161e227fdbb5adcec11396dbd8bc523175bda148c
Previous block: 0028ea1f896371731cb1180579d4ff6012a4a641a62ee981212d36e41d7360f9
Next block: 61146df06ecde9387307fce0264ce3a0ee4bab822aefd0d9c8c385fcf999ad08
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864268
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c478c7c610bd8f0ab790695171ea673b97d3b5a0fdb9825914ea3d7eee1c2d07
Median time: 1701864267
Difficulty: 4.656542373906925e-10
Confirmations: 1499
Chainwork: 00000000000000000000000000000000000000000000000000000000000005d4
Bits: 207fffff