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: 1914
Hash: 60a4546611d50ebd3ae04b4f8d75201a62ac7bdde19f952fe7a42cc768a1b7ca
Previous block: 699814c8e680eca3c5cf1f4beec9629060f76a388b35af47beb46a8a226ce069
Next block: 669a8474499be1f9b84301a0f29f1bddaac39a5b2226eacd62d88d4674ff51b5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159242
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0fec862db17671bfb1bd744c677643ea06b0a591ecc9066dc6707d2e85d3ee56
Median time: 1719159241
Difficulty: 4.656542373906925e-10
Confirmations: 330
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ef6
Bits: 207fffff