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: 777
Hash: 04599d5553491234a36947c25ad994159ece7ca9e3c6554670d8cea20daa3a7b
Previous block: 17337cf82e1a8c75d5e022f83c238434f2b9ba1f6b05af277cc22abad70a0374
Next block: 26c84bb8339113568355d2e3c104df6805d44940534467bf36f9fb5c9e0b7a84
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864273
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ff041438bde400165cc0afdf8dd31ea73947d2a93d79dbbd137923c39c82042e
Median time: 1701864272
Difficulty: 4.656542373906925e-10
Confirmations: 1467
Chainwork: 0000000000000000000000000000000000000000000000000000000000000614
Bits: 207fffff