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: 2074
Hash: 00add7dab2da497ec5e96b6dec90db0dc01bdc8c133fb360d4709a22ff3e4dac
Previous block: 58dcdbc024e00ecbe011bb4edef92a42b8ceccf3bd279c6e742ae79bf297f5b4
Next block: 5a05e7b201d7d7c4c1a9bb94af96520272391d1274decbc451f919bff2edc673
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964782
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3a8af49f37401a6330e433527025891c00307f55735cf56cf4bb0a00663bc7b1
Median time: 1728964781
Difficulty: 4.656542373906925e-10
Confirmations: 170
Chainwork: 0000000000000000000000000000000000000000000000000000000000001036
Bits: 207fffff