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: 307
Hash: 3b2907737239be0009ea5058aecdda5c3113bc6e2dd1d1f5cbace19283f002ed
Previous block: 6683dc308c16f6a6e7ab62c1f182b622869f53166ea3bb61d47108e948032990
Next block: 2ac3d8852374937d1ff0b78db9d2c8be39ddf0ff607b1cfc461442e453495774
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597918
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: c3a2717c1d27e3e659a265f51fb15e5c1449712b8ac2b4dd6fdd6106e1301d29
Median time: 1701597918
Difficulty: 4.656542373906925e-10
Confirmations: 1937
Chainwork: 0000000000000000000000000000000000000000000000000000000000000268
Bits: 207fffff