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: 2501
Hash: 641a832017cf60874e8f6d92ff7b12b16178900db33a89adf9a0f547c62d95fc
Previous block: 2d3fc9a1ad04f266e8d2b1ed54103369671cbdce277d001fd8817d4c24d79f0b
Next block: 01676fbfb648237f7806d60bb2071a30b68b66e14915d7b8144b6b1a0e75ceeb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847303
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 555e440dc2a0ce400e217689c92af4bb12323259f9cb3ccdd2dda819fc19d506
Median time: 1743847303
Difficulty: 4.656542373906925e-10
Confirmations: 142
Chainwork: 000000000000000000000000000000000000000000000000000000000000138c
Bits: 207fffff