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: 2002
Hash: 21181db852f127108360e427bf74759948c8d9bc69d3aa8ae94d434555e9f362
Previous block: 6afb550f1cbda383543bf93685b8e552e1cdeb6fed0a0c68e7e9edd667b9013e
Next block: 6dcc969c17807503911215467f74ce26845ab9f013e26f6018f0b6e2032207e6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159257
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ff7a09b45f2fd2004378cdd32219b88be1cb35b9aa946c2c677ae87bface2a3a
Median time: 1719159256
Difficulty: 4.656542373906925e-10
Confirmations: 242
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fa6
Bits: 207fffff