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: 559
Hash: 69868a3038cde587f5e9d344714cbce34c524a12e217ba01ed556fc79a23c829
Previous block: 6b4d3b0f29161cf988b3f657a215d7524aa52ecc2a433f8ba7f5b21fc996975c
Next block: 5684b70447ead4dc25fe4baf3018569e15dfbb4d878504e3357df488e112e799
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864237
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0548dd614b88bdf623cf2179e6a744fcc947cec450fe699cf949c04cad786dd6
Median time: 1701864236
Difficulty: 4.656542373906925e-10
Confirmations: 1685
Chainwork: 0000000000000000000000000000000000000000000000000000000000000460
Bits: 207fffff