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: 1434
Hash: 4660dc3e38c60b7ef11171e52a5aac6b4edf7a9244a3f23713b97082dc259619
Previous block: 7263a98be38c19514a22d6d7da5238492561972c43aa0639eea8cb30eff15d84
Next block: 0236c942c11843654fedf9255c95535959f47df8e544b4b5e9f6522417952b5d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697646
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 91e68fd4601dc195df2f892860c3f2eaf12f5616e2f001a9d454d5fe079153c1
Median time: 1718697646
Difficulty: 4.656542373906925e-10
Confirmations: 810
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b36
Bits: 207fffff