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: 679
Hash: 1960513359556388278b0178f7d73d3e555442f246bdb7753f72676e746fd343
Previous block: 370d568066323cbdd02e975fc1239a437bf204571a73a55cc6ac6217446540a3
Next block: 1152e6f751610a135fdd0fc1018bfc12538df06f01e680a44078203c464beb42
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864257
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: d3ce1cd99760d432ce7dcf35d96487d4e8dd7b9325689e5f00452143af4bd26c
Median time: 1701864256
Difficulty: 4.656542373906925e-10
Confirmations: 1565
Chainwork: 0000000000000000000000000000000000000000000000000000000000000550
Bits: 207fffff