Overview

"AWS for public blockchain transactions"

The Managed Transactions API enables traditional enterprise procurement of public blockchain services without the need to ever buy or hold cryptocurrency.

Users are billed in arrears based on transaction volume. Fees incurred when using the Managed Transactions API are billed in arrears and always expressed in terms of the customer's choice of fiat currency.

Supported Methods

The Managed Transactions API supports the following methods of operation:

Method

Use-Case

Broadcast

the API signs arbitrary calldata and broadcasts a transaction to a named recipient

Subsidize

the API sends exact funds needed to execute the contemplated transaction to a named beneficiary, which broadcasts the transaction upon receipt of the subsidy

Supported Networks

The Managed Transactions API could theoretically support any public blockchain. The following networks are currently supported:

Network

Currencies

Supported Methods

Base Cost

Pricing

Ethereum

ETH

Broadcast, Subsidize

gas¹

100% markup

¹ Value transfers (i.e., payment of cryptocurrency or tokens to a third party) are not currently supported by the Managed Transactions API. Such transfers may be supported in a future release. As of today, this service only pays the fee to broadcast transactions to the network (i.e., gas).

Sender Addresses

Provide Payments uses the following "hot wallet" addresses, which vary based on the target network, in connection with the Managed Transactions API:

Network

Sender Address

Ethereum Mainnet

0x0A18277d6CF3253A89089A428f18bb3B66AF734e

Ethereum Ropsten Testnet

0x308354456d4a3d594a0dB0b154E1a52ed3312067

Ethereum Kovan Testnet

0x308354456d4a3d594a0dB0b154E1a52ed3312067

Ethereum Görli Testnet

0x308354456d4a3d594a0dB0b154E1a52ed3312067

Liquidity

Liquidity is provided by the UBT utility token in an opaque manner (i.e., programmatically, behind the scenes). UBT is stored in a hot wallet, secured by Vault, and used to fund transactions which are broadcast on behalf of customers using the API. When additional liquidity is required, additional UBT is pulled from a professional custodian service into the hot wallet.