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: 909
Hash: 77201d65ba6d792ceb6381d302ff4fdb2f8d8f134a699f25818ce37fe39ac7c3
Previous block: 3d5f06108b2f6994492ee850c4a2c5e97c97964ef2d709f16473cef2fa1cfe10
Next block: 255181414f64d28d724a577a8d4014633b258e54cb2190d22647b20592a921f6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857820
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c03e205db923c0ddc70ae0ac3cd9a89f707a3876a5617d41741446e9cf6290da
Median time: 1707857819
Difficulty: 4.656542373906925e-10
Confirmations: 1335
Chainwork: 000000000000000000000000000000000000000000000000000000000000071c
Bits: 207fffff