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: 1918
Hash: 57fcf071302d9a66a69f81c28c978c4244de74b6fc8caddea5004b6be5c28a6e
Previous block: 067661ce0d55a60325a15c9403f4d5fc4d2bfdcff8860346a89a61872bc8bc5d
Next block: 2cab4dfaf1321cf4ca43b001b5a391819d4166599d4d339f955e65ff9ff97431
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159243
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 17da44135f4a57f6444db5ba13032d9104cacf58f57cac8aded55a292949b634
Median time: 1719159242
Difficulty: 4.656542373906925e-10
Confirmations: 326
Chainwork: 0000000000000000000000000000000000000000000000000000000000000efe
Bits: 207fffff