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: 617
Hash: 05e8f2ef32eb96ea25926a8a4015564415d01afe5b7cb5ccbe4fc77de7e831d1
Previous block: 0c3753e4e0f16ee1a38986868971c44ba53a7a996002bff4cd0ce53afb33f2e6
Next block: 66305e969a9bcd2ff39ed55c0bbac296717a0008847e2f094de5da8e5f8020ca
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864246
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1a11fd99795acf7a5346ac91f117d9f14c9509c325d07ef68659a496e0e98c53
Median time: 1701864245
Difficulty: 4.656542373906925e-10
Confirmations: 1627
Chainwork: 00000000000000000000000000000000000000000000000000000000000004d4
Bits: 207fffff