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: 1946
Hash: 3186c6c5494ff9d10f5e70128102c4188fb95024acc590f00553ba4d9db1c133
Previous block: 1872146a3127cc675ba57f73764d227e80654448a1d03ac3cae7b7e3ba3f5e8e
Next block: 7d62c51021165e42b5319137025136f893204aefca25415887af141c7f6cfac2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159248
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8daf6c7d0fbf316d2c97b5be73adfff094ee516b27fb6602132b79b6f2adf037
Median time: 1719159247
Difficulty: 4.656542373906925e-10
Confirmations: 298
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f36
Bits: 207fffff