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: 2546
Hash: 0f1c6d88e8f1a65fdcbf122d46740c10765c72ad0cb506b1ed3457f1b98c4e60
Previous block: 2be5bcace21be283d4a40ef3f3799d17899bfdd3c0f0417d527af9c927f3bfc0
Next block: 7f2dcc4960aa6f9ef752c8604f67c459aeed5385d54ed0929c37c8bf12f89b12
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847311
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: dd20c68441e9063edbdc52cedf865035d21ec0c2cd655e21b66c063042e7e6c1
Median time: 1743847310
Difficulty: 4.656542373906925e-10
Confirmations: 97
Chainwork: 00000000000000000000000000000000000000000000000000000000000013e6
Bits: 207fffff