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: 2107
Hash: 43e1da4fb573378102e0ffe16850cc626f1498d78f08369db08eee3119898a0e
Previous block: 1e394f779a815b557672cf3ac362a50c0c9a43b36ebaba776f6edb4d64029d69
Next block: 4779799cf8b7bc3024877e74ba228b0e086ef86280331b66404832d41752821a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964788
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b5426f632c1380047b5929bd9541fea43125adb4cec3e40fd48e8a327004b079
Median time: 1728964787
Difficulty: 4.656542373906925e-10
Confirmations: 137
Chainwork: 0000000000000000000000000000000000000000000000000000000000001078
Bits: 207fffff