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: 1280
Hash: 4501ce7ab26f3a41e9d0150ac23ada7f4df13c65295eb576428a41e5e77f8e82
Previous block: 2b64e638f849f364a9e0cc84197c6078436bace8ae0498905e20db1540a59d79
Next block: 3154dabe89a78f5d01dfece08031be15251ca7999f4fc9b573b2312ccd723a3e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697621
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a9099cac8ec6fe62fe64f08b956c33428674f633c889b55f5011c2a60b7ba5d6
Median time: 1718697620
Difficulty: 4.656542373906925e-10
Confirmations: 964
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a02
Bits: 207fffff