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: 846
Hash: 4dae78ee381d4be7a5a68d2db1de6be75307989b2a6c274e5b73db89557c83b7
Previous block: 4c1984adf7564a2e8fb49e6dca8c57177c6e2309194ab9bb327cde9aff7caede
Next block: 3c2fefcd8e79291df7881f7bd1a91193162143381a5ecddc37895e269a520895
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857809
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3dcd91d33588a400c317f23f9916aee1f19315bf75ba3ad14027834c6ddd8e16
Median time: 1707857809
Difficulty: 4.656542373906925e-10
Confirmations: 1398
Chainwork: 000000000000000000000000000000000000000000000000000000000000069e
Bits: 207fffff