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: 67
Hash: 32057c3414d2b559fd7b96b27f449e14bc3367cb3c28666baa37d7cb1e500aac
Previous block: 7b041975b0456db6f5430f66097b42bd4889138be00ca6a92e1c7e64e752035e
Next block: 5d9cd39d3d7834629b46820f18e9d9bf1c88c42894feaf9e801a0fdcdecbf941
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597878
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: da92a62923b79893dfa5da3f36fdd59c3873c70c6dade9528463b0885dfe99ea
Median time: 1701597878
Difficulty: 4.656542373906925e-10
Confirmations: 2177
Chainwork: 0000000000000000000000000000000000000000000000000000000000000088
Bits: 207fffff