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: 528
Hash: 2fd2000e01a90f1cd74029f7765d91dc194cf295a423fefc50839ae819a3a876
Previous block: 32f1ebf49ab906637f8b9658b917ac67fe7b93f1072be53c6327e4b1c9ebd29b
Next block: 5a38c8a7d5dd5430a88740d377f49a44f04b2bb2f7a2f2b3c203c04346470c52
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864231
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: e0093cbeccca0d37d747c7dc3f65fa00a90090706bbeb4d3e19cc010c182933d
Median time: 1701864231
Difficulty: 4.656542373906925e-10
Confirmations: 1716
Chainwork: 0000000000000000000000000000000000000000000000000000000000000422
Bits: 207fffff