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: 1516
Hash: 2cc4dfef683a94223364932b64ec1686f9434068e1b53cdcf4bde8ed22b6b811
Previous block: 6d9c1dc33a4fdc84b3e40542857efc37d4a5ee1277a07aada62e2fd02e07d1cf
Next block: 6d6bd5805ea1be23f630106c4d53fe08cf9faa805ab5d52a36b20dee64ac327f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697660
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: fdcc1e80b4a66531935216dbc886d445fb7ed8618628b1e32a2b5e5b6866bae1
Median time: 1718697659
Difficulty: 4.656542373906925e-10
Confirmations: 728
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bda
Bits: 207fffff