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: 1610
Hash: 2c568a888d59b271f7df2b4d3dd11e5dfe6c269ff81658a34c5ae5b14786c5ab
Previous block: 3888e41b8a1f97ae80b6c3fbec26598ed9f1bb1ef284b054c2d46adc7f818d9f
Next block: 5953b60b93bdd91b9ffb2ccf9f58e2709ad132b6470378690913712f7eab0eb9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159192
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: cb54d26ce37792bfb00e1c5e69623896d62a4d4b74fd4279cac03e35da73f86e
Median time: 1718697675
Difficulty: 4.656542373906925e-10
Confirmations: 634
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c96
Bits: 207fffff