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: 65
Hash: 2dc2fb0762d193e83c61df63cd5f8519821247c1b14f1f9e393acc52007cbaac
Previous block: 161bb216f16aa6414efe78d144562c3a417861612cf5ef309901c1708df69624
Next block: 7b041975b0456db6f5430f66097b42bd4889138be00ca6a92e1c7e64e752035e
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597878
Stripped size: 217
Size: 217
Nonce: 2
Merkle root: f44b4944ccc3be35ba4d8b006dff67a855f1ad3803c9ce10fafe155eddd012a0
Median time: 1701597877
Difficulty: 4.656542373906925e-10
Confirmations: 2179
Chainwork: 0000000000000000000000000000000000000000000000000000000000000084
Bits: 207fffff