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: 1334
Hash: 43bc8b26de2afc61eb0c65908c36d495b88247a2cf122ff37084b4130d1d8e6b
Previous block: 070596178a646a718af339112b4dcde5849c0a8bf108f19e191d72fd0f8e85c2
Next block: 433207c1a5761699f3ab002a23619afc7b3ad0bfa4d0a55e2af1f582d144cdee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697630
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1f7e2557490f0aca376d405b39b3ceea09e6aaef6dd1539f5f7206a99c925307
Median time: 1718697629
Difficulty: 4.656542373906925e-10
Confirmations: 910
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a6e
Bits: 207fffff