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: 1262
Hash: 1a99ff3298c4abdb29c96a2d679ecf44ef632161548973e8d5c3c8a99818ef3e
Previous block: 2385ad01a65b6605fd0fb5ad4d1c88b1826433a14e2faaed67e53c4888274926
Next block: 290b3705c19806c254ffbac61fe4c88e27cb3c5c961df6ecb98f8fde6c846a33
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697618
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: fe27495907254652e9b8dc7844c92e43789db90d4ecdf53fb2b521e3d512a84c
Median time: 1718697617
Difficulty: 4.656542373906925e-10
Confirmations: 982
Chainwork: 00000000000000000000000000000000000000000000000000000000000009de
Bits: 207fffff