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: 2039
Hash: 4a58af52c4aa2ccfb66d6514380816aa27a120b68079725471ebc523567557cf
Previous block: 79b229ca43ad27fd47ca3d10d040fcb862cabc95db592b69b738bd3eda8b937e
Next block: 7f2665798f7e2876188b1522f3bf3a2caea9b08f27123c9c36012bb5590e5eab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964776
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a4fb6013fbe9f5d80a3c20e4ed2fd9986ebe107a0a1bacdc7cdfda28c961dfc7
Median time: 1728964776
Difficulty: 4.656542373906925e-10
Confirmations: 205
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ff0
Bits: 207fffff