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: 2639
Hash: 5358a33ecab748961b267531d8b9b441a147b412b73dc659d91e31c283dbdff7
Previous block: 41c659a53cb68314786ccfacb2b85bb31ed17f52ec8825608e978c30cf235cf8
Next block: 1b8dda14ba9acdd96f40037f36a693c89c3e76490cefd402b5dddf462a6baa74
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847326
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 69ebef07f7db4b34de8b260a13d3219d6c5eedffc560649dd30ede58c124b142
Median time: 1743847326
Difficulty: 4.656542373906925e-10
Confirmations: 4
Chainwork: 00000000000000000000000000000000000000000000000000000000000014a0
Bits: 207fffff