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. mgqFp9Dhy

Height: 2198
Hash: 5aeb7b55a1cb09134db87002181a9b9466b432612f93fffbbcf4bb0e0891e6cb
Previous block: 286eb2eef3bd4445961770b1098aee9b31c0326622174fb368503fac6ca8eccd
Next block: 23756d9d4292ef260322268519dfda6fbef7facf8e139ed7f7e187378ad11627
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964803
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: b2875827db251c360fd45309b0460e03bf4f555b52e7e976731a882fa28232bc
Median time: 1728964802
Difficulty: 4.656542373906925e-10
Confirmations: 46
Chainwork: 000000000000000000000000000000000000000000000000000000000000112e
Bits: 207fffff