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: 2052
Hash: 7c7f2ff4895db966b32d725f02f7c9d8fdcd7e3fc46bb52807df9beee6bb8bb1
Previous block: 139c228657a86697a726fd362f5458d51e4bdd4d75dc2c6a8e9e4220896dedc7
Next block: 12a0e80695079572025296876121ad4c2447df677014d46b5917e4ff49b923de
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964779
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6b1f4267df99dbb4391cd1db04b6402fc7ced8813ab5541e4bab9f3b6885d1b7
Median time: 1728964778
Difficulty: 4.656542373906925e-10
Confirmations: 192
Chainwork: 000000000000000000000000000000000000000000000000000000000000100a
Bits: 207fffff