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: 322
Hash: 3a6dc270f35086fa1ff414aeabca25cb72cf586df1c6f6bae85c54362a6abff7
Previous block: 04051b7c8663569100e67d04ec670a892d4f84c2af030106f1cca53473288742
Next block: 2fcfefd237d212cdd82ead0da5bb0275d9eed8419be0fdc954983419ef336027
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597921
Stripped size: 218
Size: 218
Nonce: 9
Merkle root: 02dda84588b91ae8213098453870af6b2a79d27ae892535a8105226d87ac55a3
Median time: 1701597920
Difficulty: 4.656542373906925e-10
Confirmations: 1922
Chainwork: 0000000000000000000000000000000000000000000000000000000000000286
Bits: 207fffff