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: 421
Hash: 17d3f4c89bacd1db24176043cc5237f6faec40873cf7d6268ba943cdb9b857de
Previous block: 41876e61ea4da454581b76b7a7c969364d4e0032b3ff96de09949b22092fef4f
Next block: 40fce3c5aeb3d43131bdbeaf12e5c296139fcd21c7fa0f78933f45a263853c3d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864214
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 989c6fe0871c1322e2130080264f8a6525996bf8ca9d87d788e121731ce7c82b
Median time: 1701864213
Difficulty: 4.656542373906925e-10
Confirmations: 1823
Chainwork: 000000000000000000000000000000000000000000000000000000000000034c
Bits: 207fffff