bug: Requesting more than one signature causes transactions to hang

[awrichar]

What happened?

My Current draft of #483 requests these 3 endorsements (two different signatures from sender, plus endorsement/submission from notary):

attestation := []*prototk.AttestationRequest{
		// Sender confirms the initial request with a signature
		{
			Name:            "sender_transfer",
			AttestationType: prototk.AttestationType_SIGN,
			Algorithm:       algorithms.ECDSA_SECP256K1,
			VerifierType:    verifiers.ETH_ADDRESS,
			Payload:         encodedTransfer,
			PayloadType:     signpayloads.OPAQUE_TO_RSV,
			Parties:         []string{req.Transaction.From},
		},
		{
			Name:            "sender_lock",
			AttestationType: prototk.AttestationType_SIGN,
			Algorithm:       algorithms.ECDSA_SECP256K1,
			VerifierType:    verifiers.ETH_ADDRESS,
			Payload:         encodedLock,
			PayloadType:     signpayloads.OPAQUE_TO_RSV,
			Parties:         []string{req.Transaction.From},
		},
		// Notary will endorse the assembled transaction (by submitting to the ledger)
		{
			Name:            "notary",
			AttestationType: prototk.AttestationType_ENDORSE,
			Algorithm:       algorithms.ECDSA_SECP256K1,
			VerifierType:    verifiers.ETH_ADDRESS,
			Parties:         []string{notary},
		},
	}

My transaction hangs and never gets endorsed. However, if I remove either one of the AttestationType_SIGN entries from the plan, it works fine.

What did you expect to happen?

All signatures should be gathered and transaction workflow should continue.

How can we reproduce it (as minimally and precisely as possible)?

paladin1 (2).log
paladin2 (1).log

Transaction in these logs was ccdd0aa0-f03d-4bf5-b189-63b6b10b63f3.

Anything else we need to know?

No response

OS version

No response