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: 1288
Hash: 259e3ff7eaa6883648f87609df8453c55b9f1609196506d8aaad70dc250b9ff5
Previous block: 7985de73451053ccac94c1d09cc2425c5a14a01ee25b0ae43f40c25efedbb712
Next block: 1f68cdc4deae8ef8e2eec5784c49b8c9441aa10eda659a10c72c6df0bbcf5fee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697622
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 65ea006aa80a98cb6b74c3e1259bd75f2269b9d3d3e8fe04006b39ab82c5b6ab
Median time: 1718697621
Difficulty: 4.656542373906925e-10
Confirmations: 956
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a12
Bits: 207fffff