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: 2588
Hash: 78b818b21b386bb7026bc63745cf6994e4129dc03b114faed05c9faa7d3c3397
Previous block: 090b1b3f4ec5eeb57a2e5471bd41da08d756886d66c6178e221624d833fb51e9
Next block: 4aa7338be0c48e456a19f69c9b3dff11aee75c7d89ee8133f48b76909ce0c16f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847318
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f12f00d8930b76fc9fcfe94a17ddc933425d0164ffc731b56de32913b4504a1e
Median time: 1743847317
Difficulty: 4.656542373906925e-10
Confirmations: 55
Chainwork: 000000000000000000000000000000000000000000000000000000000000143a
Bits: 207fffff