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: 627
Hash: 4a4ae61dfb4d36d92ff552a4e17c32a88f2860e6a93e93d292dce7ae29341021
Previous block: 50adefcd858ce58994244210c7da42dcf3a874e467d314903b05c8a6251cd842
Next block: 12f83f6427c16ea94ed2ee3f0601d4431e59a50fdc7dae25aac573db094d4a64
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864248
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2f87e7944e6cc2537322b9b459f16eccf3450648bdc30d75c5124387c1075904
Median time: 1701864247
Difficulty: 4.656542373906925e-10
Confirmations: 1617
Chainwork: 00000000000000000000000000000000000000000000000000000000000004e8
Bits: 207fffff