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: 1447
Hash: 31c04635694a4e4626738d39efbd80da05257d2e6e59113b5a94af194aea35ba
Previous block: 049d4c123f87f8953d956f7b8d26fa0166755c8f456d3400faf87f6c4a570e89
Next block: 2c1cb30ba2ba7d0039f9dbebd090d5e532fbcd55b4cbba55c0bd52131dcd3fa0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697649
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 0a423a4432ac122b2681150e45328f068341c172df7c7100c7427e39602d989f
Median time: 1718697648
Difficulty: 4.656542373906925e-10
Confirmations: 797
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b50
Bits: 207fffff