paymail is a collection of protocols for Bitcoin SV wallets that allow for a set of simplified user experiences to be delivered across all wallets in the ecosystem.

❌ No more complicated 17Dx2iAnGWPJCdqVvRFr45vL9YvT86TDsn addresses

✅ Simple payment handles like <alias>@<domain>.<tld>

The goals of the paymail protocol are:

User friendly payment destinations through memorable handles

Permissionless implementation

Self-hosted or delegated to a managed service

Automatic service discovery/location

PKI infrastructure

Cross-wallet exchange of single-use transaction output scripts of any construction

Request and response authentication

Security and policy management

Capability extensibility and discovery

The family of related protocols are collectively referred to as the bsvalias protocols. At the time of writing, these include:

paymail is the name for the implementation of the following protocols:

The paymail brand is reserved for products and services that, at a minimum, implement each of the above.

As defined in the BRFC Specifications, anybody can propose an extension to the bsvalias and paymail protocols, and as per the Capability Discovery section of the Service Discovery protocol, implementations can declare support for extensions to allow for cross-wallet processes.

Extension protocols are the collection of protocols not contained within the core paymail set defined above, but that are fully compatible with bsvalias protocols and paymail implementations. Notable examples presently include:

Sender Validation

Receiver Approvals

PayTo Protocol Prefix

MultiSig authorisations

Threshold signature group secret setup and message signing

Payment channels

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