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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1218
Hash: 213ec649c87117253c3f57f4e965cb753d9e88c02bd5c5f24d054c179dc393ff
Previous block: 30e77299b203d25f23f78e840583569579348a61bc97d310a3a7394e7e6c977e
Next block: 73274e83b6c99e8821b2752dce573cdc17f14ec1feda769b194abcb6053a2f15
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697610
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: a4205d17dfae57486c01cace693741047375a20f8f8ad58c994fc6f0968c87fa
Median time: 1718697610
Difficulty: 4.656542373906925e-10
Confirmations: 1026
Chainwork: 0000000000000000000000000000000000000000000000000000000000000986
Bits: 207fffff