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: 2129
Hash: 7ffdc68ff499277ee7a71101cb877e7c2c7a34324ea097a48323ff5ffe67178e
Previous block: 531a0b0674ab9a42132181a03dcb117754d66f1d902a9a4fee392df9e3dd64b7
Next block: 6e7c00cb78c2446119b3465a9a5f1125d83e17616fdaa42fefa2d9124d2bbd1f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964791
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0807824d5c70cf4f7266b5365ff0d3672363a6a3c8e38329c603f58bb2756c1e
Median time: 1728964791
Difficulty: 4.656542373906925e-10
Confirmations: 115
Chainwork: 00000000000000000000000000000000000000000000000000000000000010a4
Bits: 207fffff