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: 2106
Hash: 1e394f779a815b557672cf3ac362a50c0c9a43b36ebaba776f6edb4d64029d69
Previous block: 6b0423ebd6e264bbb73decc1899e75cf48ebb0743b6c34d9a843ec44f0426fcb
Next block: 43e1da4fb573378102e0ffe16850cc626f1498d78f08369db08eee3119898a0e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964788
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 83f6a365fde258836b0fa22f012792e14b6c90ccbc99ab5cd16dcfa778c472e9
Median time: 1728964787
Difficulty: 4.656542373906925e-10
Confirmations: 138
Chainwork: 0000000000000000000000000000000000000000000000000000000000001076
Bits: 207fffff