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.

home    blocks

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

Height: 1258
Hash: 3172502a9f26a003a6451aa7500d064d1c941bff6c7950b8370c4b6766ff63ce
Previous block: 00f5883e0f664ab3918a8d7b6fa1c72d32cb5e544a698de8f141dc55cb569114
Next block: 62ca9827c33f03e0d1f25fd230d77316aa50cb35a5bc8d745cf7249bdc0b2933
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697617
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: a15a00d9ce4ba813161bce54027dea8d753c0b52851f2f0a51c04bc870312345
Median time: 1718697616
Difficulty: 4.656542373906925e-10
Confirmations: 986
Chainwork: 00000000000000000000000000000000000000000000000000000000000009d6
Bits: 207fffff