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: 461
Hash: 70fd87e46cbf0bed4c5dc3ac9c00214daa672d37f447b5cfae26382025ef88d7
Previous block: 7ff2793617912d5f3ac0f1b3931c5145dabd8f06f30a907939ec3d29146288cb
Next block: 3fab5d91254937ac0626d1b6506b086be2c370c404b419dba3d8379d65063a6c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864220
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 78941653802411d1609ee4d27949e71d406536c3754dfee12a90b30d43c2de21
Median time: 1701864219
Difficulty: 4.656542373906925e-10
Confirmations: 1783
Chainwork: 000000000000000000000000000000000000000000000000000000000000039c
Bits: 207fffff