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: 546
Hash: 1fc7e922145873e522df3b511b0f82b0570b56cbdecdf2974c97ff0cfd2b3dab
Previous block: 2aef41021097f4e3b6316c2b3f0a5a5c20ff9eb57a922dac165013978a240142
Next block: 6e7f92e352de4b589300e1ff6a5120ae23b6fcb130d6ee14825c1c889889c5ce
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864234
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 2144e85cb42744735523b9589822bc12a144b4ad0aaf84289da86c2b48ef9862
Median time: 1701864234
Difficulty: 4.656542373906925e-10
Confirmations: 1698
Chainwork: 0000000000000000000000000000000000000000000000000000000000000446
Bits: 207fffff