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: 481
Hash: 47951ec6d497a97125bfdad68389ef666fa0777a985973df362e7317c377bd35
Previous block: 2b948f486a75e134989ce7a34af0472e0fb3634a2a93fb728d25f3365207b659
Next block: 0685015087881d971775afec050ac46f08572b9b4255a1162a7d1c843098de2e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864224
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: e7441f986ef3555d7c9e75386166f79e648426004abfd910521ec2538644de56
Median time: 1701864223
Difficulty: 4.656542373906925e-10
Confirmations: 1763
Chainwork: 00000000000000000000000000000000000000000000000000000000000003c4
Bits: 207fffff