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: 738
Hash: 172fc50fb2ec2d9c3d3213dc1d6a532da2bf73c24cdad3bfb540fabcfc7da644
Previous block: 439bc234f1cb67efac4e219401cf90b01c60b8b647a75a8cb0aa8d35a059b3f2
Next block: 3531a30c8cc000bde7503cfde410cdd8e038871989b4a405b1244f95b1008bd5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864266
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1396c914f5913f7403be0235ddc9bd39e74df8b703d4266401d157d808696ddf
Median time: 1701864266
Difficulty: 4.656542373906925e-10
Confirmations: 1506
Chainwork: 00000000000000000000000000000000000000000000000000000000000005c6
Bits: 207fffff