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: 377
Hash: 4c078e5bf571b7518d9ff2c818e9ccefb32aefded4db038b4da089266022b5d3
Previous block: 0b1c1e07f0c452760e4534482efe9fc6390a0cb5d53993f0aa8875e0720f07b2
Next block: 0b7b8a8a98afecdccd047f86178ddf91af433536dcd4878f8423f9517e4b5b6d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597930
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: ccf144f6bd8d84ce3fdac6a8427b7369a143d844aab7e2b01e33e3d4fa32a473
Median time: 1701597929
Difficulty: 4.656542373906925e-10
Confirmations: 1867
Chainwork: 00000000000000000000000000000000000000000000000000000000000002f4
Bits: 207fffff