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: 1156
Hash: 26f43aa668659ba89cc176e02622ada994ef789b1bedcb2e98fdae3c562cee4d
Previous block: 32cbfddf695b96b9646eee77e69e2a14fe034c5151dc3698765d896e1ce0b73d
Next block: 4225fa72b37f7cbabd9822a8a41a8080a0be87a79e77f0c070099294c32a9a03
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857861
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: aebf9b142a0c428badb117934807724ea3299a96a4374a4cdeb4c636a9eec07f
Median time: 1707857860
Difficulty: 4.656542373906925e-10
Confirmations: 1088
Chainwork: 000000000000000000000000000000000000000000000000000000000000090a
Bits: 207fffff