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: 1985
Hash: 6d2e25b852e4fb3de507198c47e790178c5404b5f0eaf7f3850370e3c7c9917a
Previous block: 31adb04136be8d7e2288f54bcc02cb08e6f30d2cd42ff0838d6ccb4ab40a7a51
Next block: 4a955534eb14479710f6ce5f84089206730817dc6c73b2abe2bafab27cf11205
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159254
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b237f30e2da5a3cd9a2a4f4eb5abe5cb47b08ee053644b36831374171bdf3f73
Median time: 1719159253
Difficulty: 4.656542373906925e-10
Confirmations: 259
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f84
Bits: 207fffff