Yesterday, I listed a headphone that I used for half a year on Xianyu, priced 40% cheaper than the official website, and the first thing the buyer said was, 'Is this fake?'
I sent over the purchase record, warranty card, and unboxing video, but the other party still wasn't reassured and asked me to go to an offline verification point for an appraisal. For a pair of headphones, the appraisal fee is 35 yuan. I directly closed the chat window.
Later I thought, it’s actually not the buyer's fault; there are too many fakes in the second-hand market, so his distrust is normal. But the current verification process is indeed absurd; to sell something worth a few hundred yuan, you need to spend 35 yuan for an appraisal and make a trip offline, which is completely disproportionate in cost and experience.
This incident reminded me of$SIGN @SignOfficial Sign provides on-chain attestation, simply put, it's on-chain proof.
Anyone or any organization can make a verifiable statement about a certain fact. Once the statement is on-chain, it cannot be changed, and anyone can check it. For example, brands can issue an on-chain proof for each genuine product, and buyers can scan it to know its authenticity.
Technical aspects#Sign地缘政治基建 The execution is indeed good. The schema definition is flexible, supports cross-chain verification, and the modularity has increased after the V1.1 update.
From the perspective of the protocol itself, it is more complete than most similar projects. The financing is also decent, with YZi Labs leading the investment of 25.5 million USD, and Sequoia and Circle invested early with 12 million. The background is considered top-tier in the industry.
However, having a complete protocol is one thing; whether anyone uses it is another.
Brands have no motivation to issue on-chain proofs. Their existing anti-counterfeiting systems, although not perfect, have been in operation for many years, and there’s no reason to change processes for a Web3 protocol. As for consumers, most people don’t even have wallets, so asking them to check a proof on-chain is too high a barrier.
Currently, SIGN's actual usage is concentrated within Web3, including on-chain identity, DAO voting certificates, and project KYC.
In the real-world scenarios off-chain, several government MoUs have been signed, such as SignPass in Sierra Leone and CBDC cooperation in Kyrgyzstan. It sounds good, but it is still far from generating actual transaction volume. MoUs are essentially letters of intent, which do not generate revenue and do not guarantee real implementation.
As for the price, $SIGN it's currently about $0.042, with a market cap of 68 million USD, down nearly 70% from last year's peak of 0.13.
That said, there is indeed a real demand for on-chain proof. It's not just for second-hand transactions; scenarios like educational certification, professional qualifications, and medical records being retrieved across hospitals happen every day, and the existing solutions are slow and expensive.
The issue is not whether it's needed, but who acts first. Currently, brands are inactive, consumers are inactive, and SIGN can only circulate internally within Web3, waiting for an opportunity to bring in off-chain people.
I wouldn't buy SIGN just because I got criticized for selling headphones, but this experience on Xianyu truly makes me feel that the problems solved by on-chain proof do exist. Whether SIGN can become the protocol that ultimately emerges is still unclear.
The above is purely my personal feeling and does not constitute investment advice!