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: 1281
Hash: 3154dabe89a78f5d01dfece08031be15251ca7999f4fc9b573b2312ccd723a3e
Previous block: 4501ce7ab26f3a41e9d0150ac23ada7f4df13c65295eb576428a41e5e77f8e82
Next block: 41d8a09aa1ab92417559ec3c05e91f2c8aac7c82f23906131286c404cd91f3bc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697621
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 10aec45edf186620e425ef2601e2967e493f239a6c45ec01245335cd84b924ee
Median time: 1718697620
Difficulty: 4.656542373906925e-10
Confirmations: 963
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a04
Bits: 207fffff