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: 2101
Hash: 38aacd7411a36bc450b33cd6cb7e8f75cdb4edd8577aaee49dc9f8470629f34c
Previous block: 63f1d64cabe19cf49221e45b5fcc66e04b5cd824e061ce49a8156afe6d8696a7
Next block: 70e17ee03a16e9f1b6c3f8d2011b815b87875f2c92e3f41638097ac95eda01bb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964787
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 24c8700ef999fdfbb9542099bbc746b191bdc2cf3ec2847fafb7b1f9a2548ff0
Median time: 1728964786
Difficulty: 4.656542373906925e-10
Confirmations: 143
Chainwork: 000000000000000000000000000000000000000000000000000000000000106c
Bits: 207fffff