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: 2258
Hash: 760ad97b32e211d98d80eb8c65fce7209216c34670d425969563804e7248395e
Previous block: 47f5bf575405dfc7a94d4275b8c249495ad03c66140215c275512b75ff6bd126
Next block: 496b920dbf88038721ecdbb4ddc74c4db177454f2199cdae46cce549f70195f5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847263
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9ebb9082c878019e6ce2023e7b2a8405986eb17cd4a2493c1ebae3f385bec66a
Median time: 1743847262
Difficulty: 4.656542373906925e-10
Confirmations: 385
Chainwork: 00000000000000000000000000000000000000000000000000000000000011a6
Bits: 207fffff