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: 2514
Hash: 373e19adf371d7cb499bd18f3e1559d5f0bc8adc24455674907df8534f124d83
Previous block: 206be4234d51bab4c323a40458395fb754509e1aacdf8c1208b278989be47382
Next block: 313a7551cf7b9bfdffe3bf845aa4c2edbff95d1a76100d3f73e3a7b719551175
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847306
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4b3c6ad52b9130238a7ed6b22b1bdafce48edd3a49d0ca35d5380b54e438b0f8
Median time: 1743847305
Difficulty: 4.656542373906925e-10
Confirmations: 129
Chainwork: 00000000000000000000000000000000000000000000000000000000000013a6
Bits: 207fffff