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: 830
Hash: 7cf69fadbb5c17f6d130ddc6fd41a9cff2adcc20e87e07c12750fd8304a5be95
Previous block: 15b20ca19e7822a84d19e147b704ae7e54e2e86d5eccfaf092d44a1286cb6282
Next block: 5d692702a8c3e371a31953c750439806a13bb39f772424d3ef7b4a4ba6e1147b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857807
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d208b24e483ac66a01ff6ac6c352d67a0492d6627447af35b3f922c065558932
Median time: 1707857806
Difficulty: 4.656542373906925e-10
Confirmations: 1414
Chainwork: 000000000000000000000000000000000000000000000000000000000000067e
Bits: 207fffff