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: 530
Hash: 787fe9090daf7bf0a7562e3852ce44a6dbcbe824d0ef20979d17741fc5d8ab2a
Previous block: 5a38c8a7d5dd5430a88740d377f49a44f04b2bb2f7a2f2b3c203c04346470c52
Next block: 5d958bbf4db4986da97995505e2108ecbf8531e1b0cfdfa506069e2551d31dfa
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864232
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d7690f29aa397149a0f35a01bd530b1d789873ea1133dc3715d3283971204fe4
Median time: 1701864231
Difficulty: 4.656542373906925e-10
Confirmations: 1714
Chainwork: 0000000000000000000000000000000000000000000000000000000000000426
Bits: 207fffff