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: 2244
Hash: 3bd6921ec99f313320a6452c09b157035323d4199da77fa5d74e9e876c82e742
Previous block: 49488284a90d677b21b2376c829430fbd832aa3741b2ed24e5b8f13b51485e59
Next block: 6ef025d4f87d7aae61e7602f94db8ed7b2f9cfe9ab315d9dfe45b36a87012133
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847261
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f543745d72e1be8a5753f1413e03dd5ded0b4e8caea754cf2d7c73c2a6976e5b
Median time: 1728964810
Difficulty: 4.656542373906925e-10
Confirmations: 399
Chainwork: 000000000000000000000000000000000000000000000000000000000000118a
Bits: 207fffff