#281b: Announcing Synonym with John Carvalho

— John Carvalho announced Synonym, a company funded by Tether/Bitfinex that uses Bitcoin and elliptic curve cryptography as abstractions to build decentralized infrastructure without additional blockchains or altcoins.

— Slash Tags is Synonym's core protocol, a modernized web-of-trust system enabling users to define and manage metadata about key pairs, creating interoperable private networks for identity, reputation, and permissions.

— The initial product suite includes Slash Tags accounts (cross-authenticated key-based login without phishing risk), Slash Tags contacts, Slash Tags actions (function wrapping), and BlockTank, a Lightning Service Provider offering channel liquidity and management.

— Carvalho envisions a post-hyperbitcoinization circular economy where prepaid tokens (gift cards, credits, IOUs) issued by trusted businesses replace speculative altcoins, with reputation systems enforcing accountability instead of violent enforcement.

— Synonym is releasing open-source libraries for Lightning development, Omnibolt token support, and will eventually open-source BlockTank after an initial six-month free testing period.

— The design prioritizes user control over metadata, avoiding global indexing and centralized authority; users construct subjective reputation networks weighted by personal trust rather than exposed to Sybil attacks or government surveillance.

— Developers can visit [synonym.to](https://synonym.to) to explore open-source repositories (GitHub: synonym-dev) and integrate BlockTank liquidity or Slash Tags authentication into platforms; the first six months of BlockTank service will be free for testers.

— Early adopters can experiment with the Chrome extension demo (expected to launch near episode release) to store Slash Tags keys and test cross-authenticated login, preparing for the full mobile wallet release in three to four months.

— Builders interested in applications Synonym is not building (chat, social media, search) can contribute by using Slash Tags to create these tools; the team will support external developers and eventually build their own versions if the community does not.