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: 502
Hash: 7fab41bba0a1728f6012d797a71fa4c5fbc4607f6f4219c72189d2f8c72ebc0b
Previous block: 794ae3dc14951649b25801e749a6b38e16117576531cf26f9fd3eb1de27ff917
Next block: 2860ea563b4945871c26df4311ef514cb4de89eb75552e4c38efd27af0172d79
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864227
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d108fbd19a12fbba46c378772c00b4061398b0f7f2debc3a9eb936ff6163fab1
Median time: 1701864226
Difficulty: 4.656542373906925e-10
Confirmations: 1742
Chainwork: 00000000000000000000000000000000000000000000000000000000000003ee
Bits: 207fffff