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: 2157
Hash: 22c66d080f094d3f10517812f7d905f15246bf881567394fed2bbe5f89c02d73
Previous block: 50908bf3ae354371b3a58ca59b9db242e8f1c285a42877562d1a4fe7afc60339
Next block: 6aca57e0039d68b9cab979cd8ead1d1f4bbc36a2d6505a54111b3bfe0e387ff7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964796
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 30f6ebb8e91132397239901443541b22e9f0b372096f78651e1a027f76c2c951
Median time: 1728964795
Difficulty: 4.656542373906925e-10
Confirmations: 87
Chainwork: 00000000000000000000000000000000000000000000000000000000000010dc
Bits: 207fffff