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: 783
Hash: 11d937c49878903d2b86ba3b5b5e99d279a1f484d05321034224d929a5e3b4aa
Previous block: 153a4ecbedbca904e8dd9eaf7a1d7cbeff696ca2c12913c974978c55ada6e524
Next block: 21081501323db2de78095accf593dde91dd79bc07844f7fc59abc4a23c4a5a7b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864274
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9d4ccf84fae53bd562fe8fbadb902fdd759c9a50c25507f24aa8b93470e47b67
Median time: 1701864273
Difficulty: 4.656542373906925e-10
Confirmations: 1461
Chainwork: 0000000000000000000000000000000000000000000000000000000000000620
Bits: 207fffff