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. mgqFp9Dhy

Height: 2243
Hash: 49488284a90d677b21b2376c829430fbd832aa3741b2ed24e5b8f13b51485e59
Previous block: 6835bce64456af785b3cc4a8d9707b6f7a79fbfb508c3b83f35cb19687322c20
Next block:
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964810
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5de7145221e2e4ddb02a2ec896ccb9ecb20f2e2ace1a72151aaf26ee35057cdb
Median time: 1728964810
Difficulty: 4.656542373906925e-10
Confirmations: 1
Chainwork: 0000000000000000000000000000000000000000000000000000000000001188
Bits: 207fffff