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: 1915
Hash: 669a8474499be1f9b84301a0f29f1bddaac39a5b2226eacd62d88d4674ff51b5
Previous block: 60a4546611d50ebd3ae04b4f8d75201a62ac7bdde19f952fe7a42cc768a1b7ca
Next block: 5707f73424d96d33307ade8843ab7ed1d9678647afad0c4c9b0ffab6b0b05006
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159242
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: f44b07b7a905880d12ab7e1d4fd2392b2b06672ef6f91990424e779ee6f61180
Median time: 1719159242
Difficulty: 4.656542373906925e-10
Confirmations: 329
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ef8
Bits: 207fffff