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: 1806
Hash: 6a80fba197d35e6162900829a56d8bea214be149f5d1875ca88e7d2b2d060bb6
Previous block: 685b1a392abc470b80d8959e234cd564863a57066c0339e6ec7697be4b23c592
Next block: 2d786cc27815a4e0f6231169f1693d2f6c59647ee114e1fa0d61d7368a6dbb19
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159224
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: eb8333750d2c912d86ea76c5382131e536159b5913593c1025a6e40773d817ad
Median time: 1719159223
Difficulty: 4.656542373906925e-10
Confirmations: 438
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e1e
Bits: 207fffff