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In an intriguing development, researchers at Arizona State University have found striking similarities between the voice of Scarlett Johansson, an acclaimed Hollywood actress, and OpenAI's now-defunct voice model, GPT-4o Sky. This discovery ushers in fresh debates around issues such as intellectual property rights and the ethical boundaries of artificial intelligence technology.

This AI research journey began with an interesting comparison. Employing sophisticated AI models, the research team analyzed Sky along with the voices of 600 other actresses. The results were unexpected. Scarlett Johansson's voice was identified as "more similar to Sky than 98% of the others." Fascinatingly, voices belonging to actresses Anne Hathaway and Keri Russell often were found to be more similar to Sky than Johansson’s, adding nuance to the findings.

As the science delved deeper, it was discovered that if Sky were to have a human equivalent vocal tract, it would match that of Scarlett Johansson's in length. However, Sky's voice showed subtle differences; it was somewhat higher-pitched and more expressive. This finding can lead one to ponder on the futuristic possibilities - if AI voice models can closely, albeit not absolutely, mimic our individual voice characteristics today, what's on the horizon for tomorrow?

The alleged similarity has sparked contention. OpenAI's CEO Sam Altman and CTO Mira Murati assert that they did not design Sky to replicate Johansson's voice. Murati states that AI models like Sky are built to emulate generic human voices, not specific individuals. Johansson, however, responded by noting that Altman had indeed approached her asking to lend her voice to the model, which she declined.

This denial and accusation brings up myriad concerns and questions about AI ethics, intellectual property, and personal rights in the rapidly evolving world of digital technology. It underscores the necessity for regulations safeguarding individual's voices - a crucial extension of their identities.

As of now, Johansson has not commenced legal action concerning this issue. However, following this controversy, she has sought legal counsel. Based on the evidence provided by the Arizona State University research and her personal account, she may have a potent case if she decides to fight for her rights.

In the meantime, this development influences how we perceive artificial intelligence evolution. It magnifies a question we need to ask as we stride into the future - how do we ensure that while sustaining tech progression, we also safeguard individual identities and rights? The synthesis of innovation and moral responsibility is a fine balance we cannot afford to overlook. This discovery and its ensuing contention are but a glimpse into what lies ahead in the enigmatic domain of artificial intelligence.

The future of AI is not just about robotic limbs or self-driving cars. It's also about the intangibles such as our voices, our rights, and the often-blurred line between technological advancement and ethical boundaries. This event serves as a compass guiding us to chart out not just a technologically advanced future, but also an ethically tuned one.