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: 2343
Hash: 3ca8209149b24432e317b2b823adde9eb02e0e4c35a8974dbe153da2a9d0dce4
Previous block: 2fc6c556814849fae3de2ae1d35ac52bfdd3d4418980448f19ee52c57e6296bd
Next block: 3fb16e2279e8c4da382cc68d68196a386fa27315b3ef66e63b283de1bce1c6f2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847277
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f4b09911461209f1b1e16888d3838128488a3d31202401c582d2e78f84a272b2
Median time: 1743847276
Difficulty: 4.656542373906925e-10
Confirmations: 300
Chainwork: 0000000000000000000000000000000000000000000000000000000000001250
Bits: 207fffff