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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 207
Hash: 7aa8b88c2da0e1bee95abd356b1eb2ac4483e40d16c8c7391c327c81ea3dd7a9
Previous block: 0402f32c6ab3eecd03e1b6a69526028bde7a65f1cd71fbee3d8b09c37ee950c5
Next block: 25aac0c655f57ccabf569772f0d6004e5b3bd009a70bb6e7a67b433c829b1c4d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597902
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: b5c5779914e5ea983afccef7a02898f19d3a507496478464a691ef7d955cc38f
Median time: 1701597901
Difficulty: 4.656542373906925e-10
Confirmations: 2037
Chainwork: 00000000000000000000000000000000000000000000000000000000000001a0
Bits: 207fffff