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: 407
Hash: 1083fe6b181a8134214f0065d2516fdbdfae6b4a12cb4b6bff2442b62b843ec2
Previous block: 7e7275c79dcad370868e9eb1a3f1bfb41b00403799ebb1c0cf64e884357aa0ac
Next block: 412df374cce2b50e3072e9bc1d7d72705346d8d67ee74a8e6721c1614c354925
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864211
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 5afa7d3244ddbad9ebae797e14d3a8321720772b90ffb38e9bad7de528f6d197
Median time: 1701597934
Difficulty: 4.656542373906925e-10
Confirmations: 1837
Chainwork: 0000000000000000000000000000000000000000000000000000000000000330
Bits: 207fffff