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: 684
Hash: 1e0784d4b334a4e4e73e1ff4aa8d7bd3e1a464ce4b8246dbe507300fbaaaff35
Previous block: 6b26f186ed446f1bd5049d7fe48485b02003d5c1fb427992c83b2aaf5b36fba8
Next block: 459fb57d28095222eb997d6bb7cf02bd3fd1e303f4230f89f3237bf70a19020f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864257
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 480bf48624cfd588d2461363e7c08c0496d6f84a0a7542db5e53105c1ef56d9a
Median time: 1701864257
Difficulty: 4.656542373906925e-10
Confirmations: 1560
Chainwork: 000000000000000000000000000000000000000000000000000000000000055a
Bits: 207fffff