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: 2138
Hash: 25de30ea7a03024ab192dc63575d9c9e4c87b5e3fffcc934f8ff6e13f694bfec
Previous block: 765bb3c0851f68a22d50b484fb5c43582287ede9d243cfa838b453eed47d7cc5
Next block: 7ed61e1cf8f5751b43c6ccd016c7e2fb861095d9df27d38c86001ba337343e5e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964793
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d576dbbdb2d48e27df7642bd2a474e820b74723b9fdc25f5ea98a60e5677242e
Median time: 1728964792
Difficulty: 4.656542373906925e-10
Confirmations: 106
Chainwork: 00000000000000000000000000000000000000000000000000000000000010b6
Bits: 207fffff