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: 1731
Hash: 34cd2b1e037f293823ac8b5b747d4b49d7d28927de92680c81c445c58bc06874
Previous block: 5b04f908a6d0304bcbfa57a4d8b2341c97b734fe91bd630e9e9f000172a430a1
Next block: 405c095d72d234d8fa7eed457023ce953be51a0c505de5d2d75e7f9ffd4132e8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159212
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 027a7b5bf4648bdfd5fb0add3a4d8ff6c0e745e34bc5d375a07eef5da7db399c
Median time: 1719159211
Difficulty: 4.656542373906925e-10
Confirmations: 513
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d88
Bits: 207fffff