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: 791
Hash: 1890926f4d77e0ffbdcf10893cc68867958b7fa4402de19953a5c835c8ce69ad
Previous block: 538fd95369d91fd8e659679aa89c7656c6c637841d4518d5f7ea5f54f16d4ff5
Next block: 1d87d59a0629b21077215a46bef7b92d1412cbc6f52bb8204c2d818fb7a78e0e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864275
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c877ed4538b6f9f3a0f32b2d2f1bc673c5c2a5bfcc529c781165a4be72a39af2
Median time: 1701864274
Difficulty: 4.656542373906925e-10
Confirmations: 1453
Chainwork: 0000000000000000000000000000000000000000000000000000000000000630
Bits: 207fffff