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: 1247
Hash: 464840655b9833297bad8f405748f60176be17cc5623507bb30039728b3c2b5d
Previous block: 39db2f615956a661b1e95f5441dc062ba0a8925c5db47014bfdb04bec3a289b3
Next block: 4748579fd1e12e28e81291cffeaf0ab7aa6d7c094a130b64b2376dec4608f52d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697615
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 512c14d6cbe0eed173ebd54b1ccd74af1c49a1dbe5c853aae71b1df6794d94ad
Median time: 1718697614
Difficulty: 4.656542373906925e-10
Confirmations: 997
Chainwork: 00000000000000000000000000000000000000000000000000000000000009c0
Bits: 207fffff