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: 1351
Hash: 76430589ffce80d99dfaa21ed4d599f877c43ce1682c6df12f68f48f9c4867fc
Previous block: 6bf170cc399e488da56c5a6510375c35393593866a4a01f3cfd7e52260038eff
Next block: 36584a2d019aea28e6cc4b21b4d2cd8b0b42d9756cd57cf74057e4fcd30f7f72
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697633
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9460ab9a2d2feb72a199b2276a760a2c0974be5cc55374f285b31d88ac8ba94c
Median time: 1718697632
Difficulty: 4.656542373906925e-10
Confirmations: 893
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a90
Bits: 207fffff