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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 659
Hash: 3cdaa4e3a62ff1bee914d69c1ad82fb5d12f9bb8567263daf81a559cf039f194
Previous block: 7835f40bc2f93ea9e0579798b5b70025db1c9ac070660bd99891acc364e848c3
Next block: 5058e46ce21d49966430ed0961d28041a8dfbc3072f2d64a72f1c11595d28186
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864253
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: acf54f5ac186852efa95fad33596c74263f910296e9d0c3b98525dde3635cae5
Median time: 1701864252
Difficulty: 4.656542373906925e-10
Confirmations: 1585
Chainwork: 0000000000000000000000000000000000000000000000000000000000000528
Bits: 207fffff