CEL Solicitors states it has traced more than 5,500 BTC that it believes belong to former users of Intersango, an early Bitcoin exchange that disappeared more than a decade ago. ^[1] One former UK customer recovered 61 BTC from the exchange's remains, settling the case on May 28 after instructing CEL on Jan. 20. ^[2] During the reported trading session, Bitcoin's price rose above $77,500. ^[3] Bitcoin's pseudonymous nature makes it challenging to analyze user-level activity because a single user may control multiple identifiers known as addresses. ^[4] The authors propose a method for refining heuristic-obtained clusters by grounding the clustering on contrastive embeddings yielded by graph neural networks. ^[5] At Bitcoin's current price near $78,824, the traced coins carry a value of roughly $433.5 million. ^[6] The recovered 61 BTC are now worth about $4.81 million. ^[7] All major cryptocurrencies advanced during the reported trading session. ^[8] Global investors were carrying the lowest currency hedges on U.S. assets since 2015 at the time of the report. ^[9] Current heuristic-based methods are prone to errors such as merging different users together. ^[10] The researchers release a publicly available dataset of Bitcoin transaction graphs containing a substantial number of clusters. ^[11] The cryptocurrency market's weekly performance was negative for the week that includes the reported trading session. ^[12]