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: 2365
Hash: 3976abab9ad0f504e5fe5b84207806ede4d107615271ce2e1a9ddbb6c34c09a0
Previous block: 40e7dc8ee632710127a2b92faed22c097a1fa577b389f0e14d1e89b253957420
Next block: 01566c106cb0cbff592567ac15b7c25b5beb89f615705f59243e75fdfc78c3b9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847281
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 37bd5b1ea406d92ed016610c5ae27b85ff6c8ab84fb2c5d71e422f0850c6f91b
Median time: 1743847280
Difficulty: 4.656542373906925e-10
Confirmations: 278
Chainwork: 000000000000000000000000000000000000000000000000000000000000127c
Bits: 207fffff