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: 821
Hash: 36dd289d7dd09e113746d38cd508bf08c53d01d545db237f2a0b5cfd198e3413
Previous block: 29ccc0ba0a8110fe5c690d5694a8577227515552baa4b94d46500df73062ea19
Next block: 5dd4ca0ada3a034eeaf23a96afa16498a7dd11d66e8b849d274612b403c82205
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857805
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 47a2b85eab0543edad9a58378ba1b511f500661cd73577fdab498f6f1a38cda7
Median time: 1707857804
Difficulty: 4.656542373906925e-10
Confirmations: 1423
Chainwork: 000000000000000000000000000000000000000000000000000000000000066c
Bits: 207fffff