Transaction not yet indexed

6687FMpkXhVCAswS92gLGEPfExPJCNXJC2kTRFKA7zW4tiUJKJswYKjThzgEYaivtsiL7SQev7hmJFFdG1j7cfK4

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.