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: 685
Hash: 459fb57d28095222eb997d6bb7cf02bd3fd1e303f4230f89f3237bf70a19020f
Previous block: 1e0784d4b334a4e4e73e1ff4aa8d7bd3e1a464ce4b8246dbe507300fbaaaff35
Next block: 68740b66bffae51eb8d9681607b81ccc39e6be6ac88ad9c49f0bd48ede0f0d6c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864258
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b8cdb9f7eaa373b399b16c0cbed832bc5489815a2cce32caef4a439055132bb5
Median time: 1701864257
Difficulty: 4.656542373906925e-10
Confirmations: 1559
Chainwork: 000000000000000000000000000000000000000000000000000000000000055c
Bits: 207fffff