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: 1909
Hash: 6fcc2fcbb9d0d7cb0c0b341b9f0f3a2cd0cd7085eac2e96a37ebf17a08e70644
Previous block: 50b64dfaa5441bf897d5ce4369eeb4305f01b19710bd4cf4705ac6e777da266c
Next block: 495e0af15aa118a985358cd1c2a8f931eb95f1415e8a6f8382b08ddb46effc2d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159241
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 15c1038a786a3e4bda451715d6b175507fee18a9bd2db362028505d3fa5e8d48
Median time: 1719159241
Difficulty: 4.656542373906925e-10
Confirmations: 335
Chainwork: 0000000000000000000000000000000000000000000000000000000000000eec
Bits: 207fffff