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: 336
Hash: 291965b381599c561078bc4ba7100026cd186a9c2af34680795cc3132ca2e49f
Previous block: 235fb2df2a79ff0a116b58873feead9eb935e9b7f70c2ce9a36ea42594cc5e9a
Next block: 3b091a43371b33dffb9db28ae139305b61e7d3b6e80db5757f6d691a4444c73a
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597923
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 29dadb10c819c8104f9679716d0e685f0ac47a7ff023abceee8f1a498a117ee2
Median time: 1701597922
Difficulty: 4.656542373906925e-10
Confirmations: 1908
Chainwork: 00000000000000000000000000000000000000000000000000000000000002a2
Bits: 207fffff