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: 2430
Hash: 57c2c092d3227f3f46a93772a5e1f9001baabfcca6f00573f6e11e1aea527fef
Previous block: 5fbc68dde038ca76da2ff2513b3487cced1c517e25ee37bc15eaba732d09a66f
Next block: 4949ce014493235f2d384d6ecb5568770d3a0b8542422cc08d3b5aa491c95806
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847292
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5681182217504d457a3aaf51681c21a96a2e36f51ee9cfa2db7e59fc2920d6b3
Median time: 1743847291
Difficulty: 4.656542373906925e-10
Confirmations: 213
Chainwork: 00000000000000000000000000000000000000000000000000000000000012fe
Bits: 207fffff