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: 2486
Hash: 2745d079bde5929ae7b9e466d21f3be1b8685448a17b45732143ca11ffd6cfd6
Previous block: 54727fa567c1bd0440fff927d480e24f8d0287b6d309e944e1542ca0cc48cd27
Next block: 40553d836d17e639d9a82ea5afb1ce530addda37e0c47acb45266fb3d45e2f95
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847301
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 15a397b888a56e4b9dd2b6d76c7e66c251f7a11ff75d7bf1f1f7194987a75186
Median time: 1743847300
Difficulty: 4.656542373906925e-10
Confirmations: 157
Chainwork: 000000000000000000000000000000000000000000000000000000000000136e
Bits: 207fffff