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: 1290
Hash: 66a2dd952aca838512bcccdcea9ca847415e63d4055e9d2f0d5daff7912af143
Previous block: 1f68cdc4deae8ef8e2eec5784c49b8c9441aa10eda659a10c72c6df0bbcf5fee
Next block: 7bc871ac66e9dda19906eb28b08474fd4a548d3c33fddf41c656ec55aa01c33c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697622
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 01bf45b6ed6a184cf6e22bbc3d54c1d6e270472cd9b2c499de96a603c9af973d
Median time: 1718697622
Difficulty: 4.656542373906925e-10
Confirmations: 954
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a16
Bits: 207fffff