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: 447
Hash: 4a49ac9fb5f0d84e0afb59ec98a6c5172d1ebfbc136929df3e13a34941759a51
Previous block: 6a3b96184329a219981f97139dc26c492c139a237cb87e5c459ce9b946153b7c
Next block: 65538ff703810c9a4f53899d05a53f8bd7cbcacb5bb6fa93919dd9d3e23ce97c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864218
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 14f628a31262f565640a1a26d398e20686ae961b805806dbadfdcae6225e141a
Median time: 1701864217
Difficulty: 4.656542373906925e-10
Confirmations: 1797
Chainwork: 0000000000000000000000000000000000000000000000000000000000000380
Bits: 207fffff