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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mupBAc74k

Height: 2209
Hash: 64b6a0744a65c597a9d0e4baa492ac8885c2e29a54f7c6609e1583d28fbae07a
Previous block: 527a9dbfc55bd6ea15b46bd00b13ad645e9823de849510d1f75ea11e24db77a2
Next block: 73762392be2c3b85890a2132d9a633d722884af59e1e71acbb957fafc6faf7f1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480977
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 50cfe21eb115616ff2f87cc3f6f97668bb604032e2dd43de5fa444d95013da60
Median time: 1719480977
Difficulty: 4.656542373906925e-10
Confirmations: 83
Chainwork: 0000000000000000000000000000000000000000000000000000000000001144
Bits: 207fffff