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: 1926
Hash: 5f8a3b1f1d8311b560fad3a6d80d89bdac72500b4034981c7eca3886077ffefd
Previous block: 72de8942d879569374d2e24666bdb6a72a5210d7c826905559ee66ae30b92d32
Next block: 4ac53476d9b8581080e5b8311115ac7060681928c9bdfd5868219f10bca815ff
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159244
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: eb0136c6044fb5756cd131c73de698292aaf6d6e14b845619842653349cca524
Median time: 1719159243
Difficulty: 4.656542373906925e-10
Confirmations: 318
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f0e
Bits: 207fffff