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: 1219
Hash: 73274e83b6c99e8821b2752dce573cdc17f14ec1feda769b194abcb6053a2f15
Previous block: 213ec649c87117253c3f57f4e965cb753d9e88c02bd5c5f24d054c179dc393ff
Next block: 5a322a37b36cd72621099aefbb5d41cc8ee6ebfecb7235a8304b7a58167e4296
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697611
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2f5137b201698fbbee54a2389c06ba7d98916d2e35384b3c86b21ff7826aed6c
Median time: 1718697610
Difficulty: 4.656542373906925e-10
Confirmations: 1025
Chainwork: 0000000000000000000000000000000000000000000000000000000000000988
Bits: 207fffff