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: 2131
Hash: 52c57cd0a165a3c7af584350d5c8dd0a1c8e25968b2f90a5502b8f8a431f5c67
Previous block: 6e7c00cb78c2446119b3465a9a5f1125d83e17616fdaa42fefa2d9124d2bbd1f
Next block: 226140c47e964153a37e7a31a516804d3562c4fdd6c249afb404d95d16f00c18
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964792
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0f0dc5cbf1bfde99c8bcc4f6f6951fe75d687811cffc00aa357eb82fd68512b2
Median time: 1728964791
Difficulty: 4.656542373906925e-10
Confirmations: 113
Chainwork: 00000000000000000000000000000000000000000000000000000000000010a8
Bits: 207fffff