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: 555
Hash: 1b3d3b6eeb104f66675b550c7e5438ec3ebe9b7db664b670706820ecd05c011a
Previous block: 50289ca31fa4eba4e8552bcb8b18f4671d293588f9ee13028669e56263ba4f4b
Next block: 77522ab2afaba58eac1f96330ad8f65e44583960182d1f8465b7bc9a1838d3b3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864236
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: b77bd06b9828696490f46df7fd2b354c5fc813c1e92cdd961aeaf9e2c1ba12e4
Median time: 1701864235
Difficulty: 4.656542373906925e-10
Confirmations: 1689
Chainwork: 0000000000000000000000000000000000000000000000000000000000000458
Bits: 207fffff