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: 357
Hash: 2729d1e5120177975ff755c27470750c312fc25d59775542d4128bbae820d7cd
Previous block: 7b804ffe5a3695757aab8109a9e841b770291a97e84459df8cfeda06eb3a2d10
Next block: 71dcdc8a46cf7a1c6398a87e791424102f8fae27e4c74f4a4f5091b9d1498a2c
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597927
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: c955a0a5a8288d404d750272225364814f911533717c805e4e980565e2aaa872
Median time: 1701597926
Difficulty: 4.656542373906925e-10
Confirmations: 1887
Chainwork: 00000000000000000000000000000000000000000000000000000000000002cc
Bits: 207fffff