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. mxMfLjAez

Height: 1627
Hash: 59e62387f043c7d8f95fee6c16448348b30e03322fa71b05105d323fb0d2b6a0
Previous block: 6b31cb41d6ad1b774582de56fbbb6836856b5af2b9a58dbcd95e86a8fc142906
Next block: 02f51545b238c41d5edd89f31b4774d735ee02e1c65110b4fb01028f00828e9e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159194
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: cbb6c9e33396d771a52ef0e15b3564e67a9d56c47b9204e3ae89b7cba0bf2036
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 617
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cb8
Bits: 207fffff