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HeyGen Avatar V clones faces in 15 seconds

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HeyGen Avatar V clones faces in 15 seconds

The latest AI video tool to go viral this week is HeyGen’s Avatar V, announced April 8 with 472,000 views on X, which builds a photorealistic digital twin of a user’s face, voice, and gestures from a single 15-second webcam recording and then generates unlimited studio-quality video without any professional equipment.

Summary

  • Avatar V captures a user’s specific micro-expressions, lip geometry, facial silhouette, and natural movement from one 15-second clip, then maintains that identity across every video generated regardless of length, angle, outfit, or scene, solving the identity drift problem that has caused most AI avatars to degrade in quality after a few seconds
  • Once the digital twin is created, users pick a base photo as their identity reference, apply any outfit or setting via text prompts, and generate video in 175 languages with full lip-sync; voice cloning is a separate optional step the company recommends for maximum realism
  • Avatar V is now the foundation all other features in HeyGen’s platform run on, integrated with Seedance 2.0 for cinematic video generation and available across paid subscription tiers

HeyGen’s official launch page describes Avatar V as built on a single belief: the output has to be good enough that users would be willing to put their name on it, not good for AI, just good. The model is trained on what HeyGen calls a temporally grounded identity embedding built from the 15-second clip, capturing the specific gestures and expression transitions that make a person recognizably themselves across different contexts. Wide shots, medium frames, and close-ups all stay consistent from one recording. The process requires no studio lighting and no crew; a standard phone or webcam is enough.

The key design principle is separating identity from appearance. The 15-second clip defines how a person moves. A separate base photo defines how they look. Users can then change the look freely while the motion stays unmistakably theirs.

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Most AI avatar systems optimize for a single impressive moment: the screenshot, the short clip, the controlled demo where everything works in the model’s favor. They look sharp in two seconds and collapse in twenty as the face drifts from the source. Avatar V was designed specifically to hold across the full runtime of a video without that drift. HeyGen describes this as identity consistency: the same face, the same micro-expressions, the same presence from the first frame to the last, across a 30-second clip or a 10-minute module.

What Users Can Actually Build With It

The practical workflow is three steps: record a 15-second video, optionally record a standalone voice clone, then choose a base photo as the identity reference for every scene generated afterward. From that base, users write prompts to generate new outfits, settings, and styles, or use the HeyGen library. The finished video can be delivered in any of 175 languages with lip-sync adapted to the target language automatically. HeyGen advises users to be expressive during recording because, as the company put it, “the energy you put in is the energy you get out.”

Why This Matters for Content Creation at Scale

As crypto.news has reported, AI tools that reduce the cost and time of producing professional content are directly reshaping enterprise headcount decisions in 2026. As crypto.news has noted, the proliferation of AI content tools is a key variable in how institutional investors are assessing the durability of AI infrastructure spending. Avatar V is now fully available through HeyGen’s paid plans, with access to the platform’s full suite of templates, translation, and studio tools.

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Crypto World

Quantum-Safe Bitcoin Transactions Need No Protocol Upgrade

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Quantum-Safe Bitcoin Transactions Need No Protocol Upgrade

A Bitcoin researcher has come up with a way that could immediately make Bitcoin transactions quantum-safe without the need for a soft fork. 

In a proposal published Thursday, StarkWare chief product officer Avihu Levy proposed a Quantum Safe Bitcoin (QSB) transaction scheme that he said would remain secure “even against an adversary with a large-scale quantum computer running Shor’s algorithm.” 

He added that the scheme requires no changes to the Bitcoin protocol and operates entirely within the existing legacy script constraints. The downside is that it is costly and likely is not useful for everyday transactions, he said. 

The Bitcoin community has been split on how to tackle the quantum problem. QSB presents a temporary solution while a long-term approach is ironed out.

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The scheme’s main feature is replacing the proof-of-work signature-size puzzle with a hash-to-sig puzzle.

Instead of relying on elliptic curve math that quantum computers can break, the spender must find an input whose hash output randomly happens to resemble a valid ECDSA (elliptic curve digital signature algorithm) signature, requiring brute-force work that even a quantum computer cannot shortcut.

Far more computing power is required for QSB. Source: GitHub

Quantum Safe Bitcoin not practical for everyday use

The proposal comes with caveats, however. It costs the sender between $75 and $150 per transaction in GPU compute and is more complex than a typical Bitcoin transaction, and thus would only make sense for securing large BTC transactions. 

Related: Bitcoin’s quantum challenges are ‘more social than technical’: Grayscale

“This is huge,” said StarkWare CEO Eli Ben-Sasson, claiming that it essentially makes Bitcoin quantum-safe today. 

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However, Bitcoin ESG specialist Daniel Batten said it was “an overstatement” because exposed public keys and dormant wallets are “not addressed in the paper.”

Batten was referring to an estimated 1.7 million BTC locked in early P2PK addresses that could be cracked by a quantum computer. 

Its existence has led to fierce debate about what to do with the dormant coins, with the community split between leaving Bitcoin as-is to preserve its core ethos, freezing or burning the vulnerable coins entirely or upgrading the protocol to support quantum-safe signatures.

Protocol changes are the preferred solution

The researchers acknowledged that this is a last-resort measure as transactions are non-standard, costs don’t scale to all users and use cases like Lightning Network are not covered.

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They concluded that protocol-level changes remain the preferred long-term path.

“While this article describes a solution that works today for quantum-safe Bitcoin transactions, it should be treated as a last-resort measure.” 

Google published a paper in March that unsettled the Bitcoin community as it suggested that a quantum computer could potentially crack Bitcoin’s cryptography using far fewer resources than previously thought.

Meanwhile, Lightning Labs chief technology officer Olaoluwa Osuntokun on Wednesday published a quantum “escape hatch” prototype that enables users to prove Bitcoin wallet ownership from the original seed phrase without revealing it, which could serve as an alternative Bitcoin authorization method.

Magazine: Nobody knows if quantum secure cryptography will even work

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