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: 2338
Hash: 3c7497a6a166c6a982fd34edb783a59b24283ed37460d8ed0aca61bf1638bf42
Previous block: 561918cd66a058eada4ea0155e094a642eb8dfac8e3c68c864e8f5a053d5fb06
Next block: 72186fd82a6ecf5f0df0e9334bcd2a86a6670ecb8b4ff950c5c11181079dce84
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847276
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 5329a8808584061fd0c9612297f797d347ca2ee70733f76d6134d5ad7e62a0c1
Median time: 1743847275
Difficulty: 4.656542373906925e-10
Confirmations: 305
Chainwork: 0000000000000000000000000000000000000000000000000000000000001246
Bits: 207fffff