Author: Biteye

Anthropic has fully implemented a Know Your Customer (KYC) mechanism on the Claude platform, executed by the third party Persona Identities.

The official term is "routine integrity checks," and the actual purpose is to prevent abuse, enforce platform policies, and meet compliance requirements. For users in unsupported regions (especially the mainland), this operation has directly become a "ban-nuke." Once triggered, the account is highly likely to be permanently disabled, and Pro/Max subscriptions may be wasted.

The Biteye team has promptly organized the most practical strategies for prevention, preparation, and dealing with bans, helping you minimize risks and maintain productivity!

Core principle: building a trust environment. Don't wait for the pop-up to panic; follow this "trust environment" setup now, and there's a 90% chance of avoiding disaster.

01 How to Prevent KYC Trigger and Account Bans?

The core of Claude's risk control is to catch "non-human behavior" + "abnormal environment." Frequent IP hopping, device mixing, inconsistent payments = direct judgment of "account stolen/bulk operations."

1. Fixed Network Environment, Reject IP Hopping

High-risk behavior: frequently switching nodes, changing shared data center IPs, and using cheap proxies.

Biteye reminds: The risk control system immediately judges "non-human." It is advisable to maintain one person per IP and one device per use. Use exclusive native residential IPs, fixed over the long term. Stability > Speed.

2. Isolation of Devices and Environment

High-risk behavior: logging into mobile apps + web version simultaneously, WebRTC leaking real location, or app traffic directly connecting to the carrier.

Biteye reminds: If the registration location, login IP, and physical location do not match "three codes," it equals immediate ban. It is advised to avoid using a mobile phone if possible! Prioritize desktop web version. If mobile operation is necessary, use an overseas physical card + clean proxy + fingerprint browser to completely isolate the environment.

3. Consistency of Payment Information

High-risk behavior: unclear sources of virtual cards, billing address and IP country being severely inconsistent, domestic multi-currency credit cards.

Biteye reminds: It is recommended that Pro/Max top-ups must use legitimate overseas virtual cards, with billing address and the current IP's country/state being 100% consistent.

4. Developer/API Call Control

High-risk behavior: high-frequency requests from data center IPs, network fluctuations causing packet loss.

Biteye reminds: New accounts should maintain low-frequency calls initially to accumulate "trust value," using a stable dedicated line to ensure zero packet loss. Following this approach will largely prevent triggering without cause.

Special Reminder: Obvious Difference Between Old and New Accounts

Old accounts (long usage time, normal historical behavior) have indeed accumulated a certain "trust value," providing a noticeable buffer compared to new accounts. Even if you previously frequently switched regions with no issues, it does not mean you can continue to do so at high frequency.

After the large-scale rollout of KYC in April 2026, the system has started to conduct combined scans of historical and current environments, and old accounts may also be required to verify or be directly disabled due to environmental abnormalities. The core principle remains: Stability > Speed, and the earlier you stabilize the environment, the safer it is.

02 What to Prepare if KYC Verification is Prompted?

Don't panic! The verification usually takes less than 5 minutes. Prepare according to the following checklist for the highest approval rate:

1. Submit Valid Identification Documents

The following are the official requirements from Claude.

2. Verification Device

A phone or computer with a high-definition camera is required, and a real-time live selfie must be taken (static photos cannot be uploaded).

(Privacy notice: Data is encrypted and stored by Persona; Anthropic will not use it for training AI or marketing, only for compliance purposes.)

3. Small Tips

Community feedback indicates that even if your passport + live photo passes, if the system detects that the actual usage location is in an "unsupported area," the account may still be banned after verification!

03 What to Do If Your Account Unfortunately Gets Banned? Complete Appeal Guide

If you see "Your account has been disabled" or "Your organization has been disabled," you can follow these steps:

1. Submit an Official Appeal

Fill out the official appeal form or email support@anthropic.com

Template message (copy and paste): "I am a real human user, consistently using it for compliant academic research/development work, with no violation of any policies. Due to network fluctuations/device abnormalities, there has been a misjudgment, and I kindly request the official investigation to restore my account."

2. Request a Refund (Exclusive for Paid Users)

Just topped up and got banned?! Email to request a refund at billing@anthropic.com

Template message: "The account was disabled without any warning, and I just completed the subscription; requesting a full refund."

Currently, community feedback indicates that the appeal success rate is usually around 20%, and refunds require ongoing email communication.

3. Golden Rule for Re-registration

Thoroughly clear browser cache + use a fingerprint browser

Must use a brand new clean fixed residential IP

Use an overseas physical mobile number for verification (it's crucial to pay attention to regions; even if you can receive the verification code in restricted areas for Anthropic, the probability of getting banned later is still very high), avoid being caught by bad platforms

Ensure consistent IP + payment card + device environment throughout

If the account gets banned, the cost of re-registering is significantly lower than that of appealing and providing supplementary materials

4. Look for Alternative Solutions

If the official risk control is too strict, it is advisable to switch to third-party API aggregation platforms or reliable intermediaries that do not require KYC, supporting the latest Claude models, with smooth payments, no regional restrictions, and project progress not delayed.

04 Biteye Summary

This time, Claude's KYC is part of Anthropic's trend towards compliance, but for users on the mainland, building the environment is the core competitiveness. Executing the guidelines in advance can basically keep your account steady; if triggered, don’t panic, following the process can still save you. After all, productivity comes first, and the account second. Protecting your Claude is to protect your workflow!

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