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: 1276
Hash: 4c433fad7814e4645c3a7d82422377a7bbdf0c98abcc2ff691e38e55c239797d
Previous block: 604eaf088b2d54e2f4f15cd0abf3706e84946499afa50a84dc6ca711a5536753
Next block: 78a7f455e0adfbf46a323720e56318be27b6dd1320d49c07fbdcf5da2009a32b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697620
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: bdd6f8923e0969d0fc09102f545eeea44366decbb15698c5cbf57d455ae4f114
Median time: 1718697619
Difficulty: 4.656542373906925e-10
Confirmations: 968
Chainwork: 00000000000000000000000000000000000000000000000000000000000009fa
Bits: 207fffff