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: 670
Hash: 270e99ec5703e89a58352e258e36dfd41f3dd2fb52d7f960884b6c9d50fc9add
Previous block: 40585abd4246161a56e846eabd5e1a1aa3b514845ed8611aa586c5fa7142df4f
Next block: 58c7dbbd706a84d2ab4bbcc386eba98d65e29d1b596444e0f44b43c6106c966a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864255
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e2a71b2e96371e6e8ec9531b0894660978a8b49950f22368b7faa2e0f6483d29
Median time: 1701864254
Difficulty: 4.656542373906925e-10
Confirmations: 1574
Chainwork: 000000000000000000000000000000000000000000000000000000000000053e
Bits: 207fffff