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: 2621
Hash: 6cecac2debd98c3e7a0b08913ee1d07fbe61760bbb5fd7b84b0b1ea20c8a3382
Previous block: 75809d7f3db5a7ea5ae1ff39145e620070d9fe7ed7f48967f1facf6dc6661a9b
Next block: 4235b005bc9dca0fa1a71330d08ddc1002af8df167cbae9aaa3e588ba87ef92e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847323
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a26ea2bcff0142703122e46f88551df6a3f961f03ee0e02c1a6f803862a99601
Median time: 1743847323
Difficulty: 4.656542373906925e-10
Confirmations: 22
Chainwork: 000000000000000000000000000000000000000000000000000000000000147c
Bits: 207fffff