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: 1272
Hash: 321840d14ffed6865c50143c86416a988b5779ff4fa4ebf36070e0e9856b702e
Previous block: 024eaa4971f078a9e8fc37616840ecf243557a1b605ebb8d65d7b6ad8ae4fcf9
Next block: 3f988a75a61e84c115a575176a1fc42544dc18b97b0eb5ecba433f867001150e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697619
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 027d63290f4ac49e27ef64a0a249ee9e167be518f10e889c489a3b15010eea25
Median time: 1718697619
Difficulty: 4.656542373906925e-10
Confirmations: 972
Chainwork: 00000000000000000000000000000000000000000000000000000000000009f2
Bits: 207fffff