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: 164
Hash: 747d649cd102e32b6a7154dd755f1ccabc0e96a24425dfd752c79fe39bcf176a
Previous block: 43bfcea57f040a99f0cad5d60daff9c2e9d81b590271bded748e2ba82da9465a
Next block: 6a7e7e536fd902054459029b6fe001571ee518c4ce865bb5cf20258312acb21c
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597895
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 61eae81dbe093c6c14bf1cda8d2a71dfd97739d24d79f399e9ba1ece2ac58e96
Median time: 1701597894
Difficulty: 4.656542373906925e-10
Confirmations: 2080
Chainwork: 000000000000000000000000000000000000000000000000000000000000014a
Bits: 207fffff