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: 36
Hash: 66718ec59a466458d17eb44cf15c26227bc07388e123ea0d8654cb41c94ec9ce
Previous block: 4c84d96ffe9dc4c117d09d5df23afd5d5a9202c1a2b871b98c2ec126cd913721
Next block: 4965749ef0d46586a905a0de0774d56e0aca05e9270590fae4e567523a2c3de5
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597873
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 00b493af02fbea849e4c246a9cd5aef65a6036c8fd551895a7e9e0f5f7189616
Median time: 1701597872
Difficulty: 4.656542373906925e-10
Confirmations: 2208
Chainwork: 000000000000000000000000000000000000000000000000000000000000004a
Bits: 207fffff