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: 251
Hash: 075de0811e58761e7cf93ac63ace415184dd30bbb48bc1e1b61404585b54739a
Previous block: 6660a2aaf9c1f1f6fd06ee8bfb0358e4e2d83aa4bb1d6f758575a82f558337e3
Next block: 3b7467ddaef7f6913efd7160bb607b2491df84e7b7d2c0a4c570e23a7ba26c49
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597909
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 8e66d3f20023fe0044b135b4a28956ccba23558d42703c3d27db75ef13623116
Median time: 1701597908
Difficulty: 4.656542373906925e-10
Confirmations: 1993
Chainwork: 00000000000000000000000000000000000000000000000000000000000001f8
Bits: 207fffff