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: 788
Hash: 1c87ba1bc15428ef1a966afd98ca3ed60f18ba1fb1f65ca016b50f7d2fe1567d
Previous block: 58c758920aaccdd93a3df72f62d1c6079e95d190fbca16e568f5083459c5c1bc
Next block: 1f622de2a1071ed62c358f79995f8c06f80181e98ea4510e498f6b0888275cfd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864275
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2cc994eb44970f069e41905d7148d89b7f6e51c81957b09c3fbaf2b99afd4724
Median time: 1701864274
Difficulty: 4.656542373906925e-10
Confirmations: 1456
Chainwork: 000000000000000000000000000000000000000000000000000000000000062a
Bits: 207fffff