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: 1370
Hash: 6d85054606086932d5d620ab6bb45a3aa7fff6d76bc51cdf7c09551798eccdaf
Previous block: 5c366b2a7384ea062e0444599a0ff4049b87179d4b9ce460c069b16cb7f90592
Next block: 6023627b18b51ec8917d38c17ea5c5823a9589e84c7d9c19b5b05be02da510de
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697636
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 52d4922a33a91f2aa469334400914cf74dcb63e160a9709595614b86e674615c
Median time: 1718697635
Difficulty: 4.656542373906925e-10
Confirmations: 874
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ab6
Bits: 207fffff