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: 2437
Hash: 099c29c0f33e347ba0f7acb0aa835e54c723833bd132c038cdba67e1a2fef08e
Previous block: 471b3bf81426db86381bf78845d6e07184754a27cf391edd902fa9285bcb329a
Next block: 77326dbdc25bfd85389caf4d0e6a52c1820597d4305a3dec37fe8ea8c4a30e9f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847293
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ab2e4e0846ee07ed05fc5f4c7e6e170f92682e44978346776ce7e0fe36be5b65
Median time: 1743847292
Difficulty: 4.656542373906925e-10
Confirmations: 206
Chainwork: 000000000000000000000000000000000000000000000000000000000000130c
Bits: 207fffff