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: 271
Hash: 5ab86d2742af678fe80567c70ad7737a066cc7d05516e844574886b8aaee0c11
Previous block: 136baab7ef7dae7c9026499c409ae7d22d04f2aa97078e36d8b0a979d432e4a7
Next block: 7773cc12d979740e4e997c27638f92a075102af27e434ca4a520af3d194aa3f9
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597912
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 355358ba25e83ab17ee920fbf02154751adbaa1b91c4405d0dfafd91816b26a7
Median time: 1701597912
Difficulty: 4.656542373906925e-10
Confirmations: 1973
Chainwork: 0000000000000000000000000000000000000000000000000000000000000220
Bits: 207fffff