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: 1371
Hash: 6023627b18b51ec8917d38c17ea5c5823a9589e84c7d9c19b5b05be02da510de
Previous block: 6d85054606086932d5d620ab6bb45a3aa7fff6d76bc51cdf7c09551798eccdaf
Next block: 792212ba7a128559d2817d8cd16557763c5c1dc6aad09b3612b944f71d5484cc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697636
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2316c0a10a534384ccb82bc62f59ef248e6ded9a9e941f97cd28263f4bf33ed3
Median time: 1718697635
Difficulty: 4.656542373906925e-10
Confirmations: 873
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ab8
Bits: 207fffff