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: 1296
Hash: 70d8840c239b6567cc732397f288e69aeb740cbb49aacddb7583097b19026c67
Previous block: 412d31ea257cf110a3508c7004b04159eb5bb7e583d95e94fcafadcf88186324
Next block: 58c626e684069d1b13b9164b43d893baee45658013eb6c05e25be578e8cd024d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697623
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1e879ba67819cd2b71fbbf3bc309d5f2798b95df174c9339b8a39bb40368af11
Median time: 1718697623
Difficulty: 4.656542373906925e-10
Confirmations: 948
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a22
Bits: 207fffff