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: 2120
Hash: 01c564d3256e734af75c991aa8870710c2c71a389de0e1a64cef6d6e6495d5bc
Previous block: 359f57aa23b14638e5d4401611f7c85fd04a4f4a1d69678e846078beaf8a556e
Next block: 5afe71bc7ca788f8be897394a8d257216462c054076799c17fad47a9ddd397fb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964790
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c27cea50d09b86be779371fe73dfe1d04275c40a955e8711d7dc2925d2ade4de
Median time: 1728964789
Difficulty: 4.656542373906925e-10
Confirmations: 124
Chainwork: 0000000000000000000000000000000000000000000000000000000000001092
Bits: 207fffff