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: 1011
Hash: 3582bafdbcd1e978429009f8a026ce0450498ca48a10566679b8703912fd737f
Previous block: 60ef512ccae0a634014ea194f0b4986eb81b523146757f7ece29561a8f098614
Next block: 73f9806f5ceffb4ea1931d863286f57f4216461db057e242c723c2ee9d71c092
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857837
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 66cabd5b1c9f507f72cf1f3b30629784271c327483150f9743ea0d13ecbbf529
Median time: 1707857836
Difficulty: 4.656542373906925e-10
Confirmations: 1233
Chainwork: 00000000000000000000000000000000000000000000000000000000000007e8
Bits: 207fffff