Telefónica has entered a partnership with IBM to deploy blockchain technology for managing international call traffic.
By adopting the IBM Blockchain Platform, Telefónica aims to improve traceability of international call data—capturing details such as call origin, destination and duration—and to strengthen trust across the communications ecosystem.
Gonzalo Martín‑Villa, Chief Innovation Officer at Telefónica, explained the rationale:
“This project is one of our first initiatives to secure real benefits from the adoption of blockchain in our core business.
We believe that the new paradigm of process decentralisation that blockchain facilitates fits the telecommunications industry well and can help us significantly improve how we integrate with partners.
Blockchain will allow operators to generate a new layer of confidence on the Internet, based not on the players that generate the data and the transactions, but on the data itself.”
IBM’s collaboration with one of the world’s largest telecoms companies signals strong confidence in blockchain technology and in IBM’s platform.
The platform will also serve to build a network of peers that includes operators, service providers, vendors and other relevant parties, creating a shared, auditable ledger for call records and related interactions.
Ignacio Martín Santos, Managing Director for Telefónica Integrated Account at IBM, added:
“In a world increasingly focused on data, customer experience, trust and digital ecosystems, blockchain can help communications service providers streamline internal processes or, as in the project we are working on with Telefónica, increase trust among the different partners in the communications ecosystem. By avoiding the need for call data reconciliation, participants can realise potential benefits such as reduced risk, time savings and cost reductions.”
IBM has been an active supporter of blockchain initiatives and has formed partnerships across the sector. Among its collaborations is an alignment with Stellar, an organisation focused on building an open financial infrastructure.
While Stellar’s goals resemble those of other blockchain projects, IBM has said it chose to partner with Stellar for a set of reasons tied to the organisation’s structure and technical capabilities, including its non‑profit status, scalability, experienced team, transparency around token ownership, and the ability to support diverse asset types.
By combining Telefónica’s telecom expertise with IBM’s blockchain platform and a networked approach to data sharing, the initiative seeks to deliver greater transparency and operational efficiency in international voice traffic handling, reduce disputes between partners, and lay groundwork for broader digital trust frameworks across communications providers.
This project highlights how blockchain can move beyond pilot experiments to address specific, high‑value industry use cases—particularly where multi‑party data reconciliation is costly and time consuming. For telecommunications operators, the approach promises a more reliable, auditable method for recording and verifying call events while preserving the operational flexibility needed across a distributed partner network.