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: 1001
Hash: 0c4df633c82278fd7293bfae5a4c75bf0dec856e9e17494172a3f212acc093a9
Previous block: 1c596251c3098b35a40c25b843dd605ee589ee78ab9882cd85e956d988fcd9c8
Next block: 053073d845fb6de7e99ae409ead820392ebb0a83fe2d36351305d1daee6194d6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857835
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: efe3b2fc12a2c4eb95420ac5244f648b713deef3f47758af9f471e96acd526ba
Median time: 1707857834
Difficulty: 4.656542373906925e-10
Confirmations: 1243
Chainwork: 00000000000000000000000000000000000000000000000000000000000007d4
Bits: 207fffff