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: 2147
Hash: 7ca40e1a41a015975418bdd3776d12b19aa6eaeb639dafe136e707f37ec77f00
Previous block: 21accf491851720a73c038f8dd62ce41b84c83ac2937653c0556946a7e93e990
Next block: 24c9099cdf00124f985cabfad222afb2d94ea840a8c4aa4558d66a0f7bb9833f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964794
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 637ca03b8b3e1c956af589fe1ef227bfca053e3c8703efe88bb270820d3ebcdb
Median time: 1728964794
Difficulty: 4.656542373906925e-10
Confirmations: 97
Chainwork: 00000000000000000000000000000000000000000000000000000000000010c8
Bits: 207fffff