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: 1469
Hash: 31e07e7e315d7b22f46727d274538b4c4fe5e3f9d116c1d150de0e558cbae1e0
Previous block: 406bf87f976a4cb85f594f138539332ead65b67550af664f39c153e8f6f49e12
Next block: 35ef08dd878cf71a27d3a4fe174d0e558c716afea105e4a37d3858909a76ce1d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697652
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e59068064b30c7cd089062bc4c6a45d0ea93436f758368ee5fd8f0f4e425e2a2
Median time: 1718697651
Difficulty: 4.656542373906925e-10
Confirmations: 775
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b7c
Bits: 207fffff