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: 1345
Hash: 51e76fdc7b36fe243612d33f7a34589544350c1240bd78a2aacc6145f000e532
Previous block: 7a2a763d8d9869a99908d63f8d086a511289b2b192f047a88d45a05567535c88
Next block: 23d3b5031012f7b2ed3ca1553853e4bd18145856a2f015f3535af5fcec700973
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697632
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: bc461a4d385748158b578cbd214a7e49e37daba53b7a3dba082433dca5e7cb3b
Median time: 1718697631
Difficulty: 4.656542373906925e-10
Confirmations: 899
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a84
Bits: 207fffff