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: 78
Hash: 02fb45d783449696d31065c1c2eeaff957aff7f726077c565c2b9f82091bce56
Previous block: 513e1632a4804341be9efcdf990db2a55800689262990887f4f4f13e2bd1e3d5
Next block: 5e0de29aa238429099ef53655fc3c92ff6252b0733108d08cda0718612f96460
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597880
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: dea8f0dcc631894a8d5a3855f6bee1360167f93ad0f8ee418f57381e8792dc0f
Median time: 1701597879
Difficulty: 4.656542373906925e-10
Confirmations: 2166
Chainwork: 000000000000000000000000000000000000000000000000000000000000009e
Bits: 207fffff