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: 1248
Hash: 4748579fd1e12e28e81291cffeaf0ab7aa6d7c094a130b64b2376dec4608f52d
Previous block: 464840655b9833297bad8f405748f60176be17cc5623507bb30039728b3c2b5d
Next block: 4ac94984ec35ecb218a6f89919e8afe3b8e54b173623faa4f11aa46ce086251c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697615
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7029e6a865e603b77e209cd46c43f375a1da66120e6170347d289628a9b13c96
Median time: 1718697615
Difficulty: 4.656542373906925e-10
Confirmations: 996
Chainwork: 00000000000000000000000000000000000000000000000000000000000009c2
Bits: 207fffff