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: 1873
Hash: 1b0e824ec8d61364b96ee08a3b891a4e8fcf674b2e62260530d2acec1a680577
Previous block: 65fd25b05210eb26c08a3607daf6504dbc06ca114f078a439b10534fa6068a17
Next block: 2af6721f77cb58cb642f352d2279624fc4e763c1ce395a33599e283223f043d8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159235
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 625f6ae19c04be1292269b8ce1ce5900ff5171491dd2eb73cc6fb8320541b733
Median time: 1719159235
Difficulty: 4.656542373906925e-10
Confirmations: 371
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ea4
Bits: 207fffff