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: 279
Hash: 7d63320c8f9fd2732d14d33dbdd1189eefa888a14da4fd36fca9b01aa98bde9f
Previous block: 70c577cff534accc37d7362e12ee7e3abe1d02fc1bb2b920d020c406155199d3
Next block: 408e33cddfd1d9a52b9f92d017338474c58307d52396e9218841f92ef9620e0d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597914
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 03403ea11cf786494f6725b80c585eb0f623d3140f0014057d5d856377f44fde
Median time: 1701597913
Difficulty: 4.656542373906925e-10
Confirmations: 1965
Chainwork: 0000000000000000000000000000000000000000000000000000000000000230
Bits: 207fffff