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: 1315
Hash: 0200cd91c05f17e85575424a19666a7dad49ceb41df043b1ffa1cc3b73f6769e
Previous block: 4e49de296cb542e9ffaf59a096d6ddaa2bfd73d6f127801f31cd8563454308dc
Next block: 2630a88d27853aad10731af6f5cac448653f926ab9c3e46a22f5255f9cfd003c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697627
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1e2891d58ad95c33f8d8452b114d69c7aacebe0c3cabe62617e2ce6a4734aad1
Median time: 1718697626
Difficulty: 4.656542373906925e-10
Confirmations: 929
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a48
Bits: 207fffff