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: 651
Hash: 05b32e9e78ae73a43a8360619cc7458da6ff15270fe548c5b5076bf4b289a3aa
Previous block: 341051dac9d96e81796349d4faf70efee1611bf7f5beb599c5a9ee823e3104a4
Next block: 198893e56bffadd2b7fc286a57395966371357bd6b5c2078c5c19ce11b58bdeb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864252
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 6c818450a10f10ceeb89bdb2adf0634f916ed891cda274680d248f063724b6ec
Median time: 1701864251
Difficulty: 4.656542373906925e-10
Confirmations: 1593
Chainwork: 0000000000000000000000000000000000000000000000000000000000000518
Bits: 207fffff