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: 2257
Hash: 47f5bf575405dfc7a94d4275b8c249495ad03c66140215c275512b75ff6bd126
Previous block: 0817941e54eaae044276d798f3ac6b487a2aecb4e4b916b2f17ce53ae7e86bb4
Next block: 760ad97b32e211d98d80eb8c65fce7209216c34670d425969563804e7248395e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847263
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ed7f121ff1effba8bdb30454fd7ef40d8d8c67a7aac4304cef73ba3a6b56bb68
Median time: 1743847262
Difficulty: 4.656542373906925e-10
Confirmations: 386
Chainwork: 00000000000000000000000000000000000000000000000000000000000011a4
Bits: 207fffff