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. mupBAc74k

Height: 1555
Hash: 07471e41b7cb21524f81b0f0609a3939950bbc427452bae9743334192177bb3f
Previous block: 27ee61189bcdd0c4d9ce9f0da78255d136c740eb2efc73e6b807ae45ee44ae47
Next block: 06ed7d68e97fce7b4e5924fb339b9d4f60e221247c89382300e001639d0ff2e2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932129
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2d92e15a5fd3d2501931f8dde7c360c86a554b0060d5b045ceb1f1b0a6d1732a
Median time: 1708932128
Difficulty: 4.656542373906925e-10
Confirmations: 54
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c28
Bits: 207fffff