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: 2205
Hash: 2b530b5d07c68d64c820e0982c969c823a819b4528f9f470bb0d61444ef35d0b
Previous block: 4f52ad1e5134930179528684b4886c01ea2b126ce3af1b7bae237d2b25913e50
Next block: 460cc03b1e29e36458dbeb530d2d73c15f62fa584bf3230f2d6b8f4e67a591ad
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964804
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: bfe31c57def40a0f5c9a1523f6ba8ccca38a45670e105b2f16d2b51ad3061f9e
Median time: 1728964803
Difficulty: 4.656542373906925e-10
Confirmations: 39
Chainwork: 000000000000000000000000000000000000000000000000000000000000113c
Bits: 207fffff