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: 1514
Hash: 06377da1213de07ce465254175d1f79b975785a70da5c9b1708f4bc973f4d4b0
Previous block: 2848ab8200f43188fd78343a9b3b325e6f881285f0daa4dc517658da91f48f2f
Next block: 6d9c1dc33a4fdc84b3e40542857efc37d4a5ee1277a07aada62e2fd02e07d1cf
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697660
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 015e15ce0bf323604a7255c78917d77c52a6570feae8abc1871237300a889f28
Median time: 1718697659
Difficulty: 4.656542373906925e-10
Confirmations: 730
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bd6
Bits: 207fffff