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: 218
Hash: 1a695856d4b63b8614c7e50a7c6ebcbc25c228385a2269aacb4b69f58e69caba
Previous block: 7a5d837f32fbb149cf09e1fb28914c58adf0cfc3681e4e450b2c6773ffb6a366
Next block: 5b87959d4ee87a43eed44615f6a248f262a713489b91934af5be992aaf3a2784
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597904
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 8595a9001fa6a5bd9783d945b07ce3d0a16385d000b12e73802b31bc80227cef
Median time: 1701597903
Difficulty: 4.656542373906925e-10
Confirmations: 2026
Chainwork: 00000000000000000000000000000000000000000000000000000000000001b6
Bits: 207fffff