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: 1336
Hash: 10bb9ef1adf8ee9db564b6ff404815e01fc410844d0cb8a616d29b1ca9db9894
Previous block: 433207c1a5761699f3ab002a23619afc7b3ad0bfa4d0a55e2af1f582d144cdee
Next block: 648322f5163a0d4d6ec5c77a0c9d2c2bc2084d750b5ba09d870c93031dd801bf
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697630
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ae1b4e48b4373d1c326fd4701e37a24c6b6f5bb8bc55005196febd67616c2a3a
Median time: 1718697629
Difficulty: 4.656542373906925e-10
Confirmations: 908
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a72
Bits: 207fffff