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. mgqFp9Dhy

Height: 2221
Hash: 7d846c3695ad6669f132f358b90cba8417620ce51d39a278b6bb8cee6c22a1a8
Previous block: 1d502b0c906ab0de6ccc90733bb93001e2d331055b49a180e30af25aba47098f
Next block: 3307b1a8196bdcfba3473693c433faa0500ce5ee1c179d455e3bcdca631e85e0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964807
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3cb4666be8746ec73451c46e7582d6de664789f4930f839ad66c8f80e825307b
Median time: 1728964806
Difficulty: 4.656542373906925e-10
Confirmations: 23
Chainwork: 000000000000000000000000000000000000000000000000000000000000115c
Bits: 207fffff