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: 2099
Hash: 239533954d2dac0f7ad72eab7e7b2e85f91eb67ad7b3c7cfae3f7f382916c6bd
Previous block: 306bc4a7d1f0052bfbacc4f5d89b300c8590b9f42373685e3e4a92c7b0fff9f5
Next block: 63f1d64cabe19cf49221e45b5fcc66e04b5cd824e061ce49a8156afe6d8696a7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964786
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b7d75017f734ec0d4b75bb6b11f86bfe67fc096e2cad08ff31a028db79558b84
Median time: 1728964786
Difficulty: 4.656542373906925e-10
Confirmations: 145
Chainwork: 0000000000000000000000000000000000000000000000000000000000001068
Bits: 207fffff