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. mkrgsKuFE

Height: 1587
Hash: 607c605844567fcc66925418b68f94048b9dead13f984a8748f53bf94056ea05
Previous block: 7578e621bf93cdde0f0108b61cb1bca3a34b33ffbf76b30beaffb2aef3e3b697
Next block: 0cf9fea9d5c1d586de8f8eb03906dfe8ba4aaa7feefdc16fd9f65487e09991f9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932134
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3491f43d57126e14c5f296ef21ccc2ba1a8f2a902664437170e401e5caf14dbe
Median time: 1708932133
Difficulty: 4.656542373906925e-10
Confirmations: 22
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c68
Bits: 207fffff