
OriginStamp
ScoreDetect
Woleet
Stampery
Bitstamped
Certificado
Proof of existence
Timestamp any document on Ethereum and get a certificate anyone can verify. The file is hashed in your browser and never uploaded — only the SHA-256 hash is recorded. No subscription and no crypto wallet.

Website, pricing, platforms and company facts side by side.
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FSM
Full Stack Marketer
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| Website | blockchainsign.io | hackthejobhunt.com |
| Pricing | — | |
| Listed in |
In their own words, as submitted to SaaSHub.

BlockchainSign is a blockchain timestamping service for people holding documents they cannot hand over. Conventional options all require custody: a copyright office wants a deposit copy, a notary wants to see the paper, an e-signature platform wants the file on its servers. BlockchainSign never...
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When comparing BlockchainSign and Full Stack Marketer, you can also consider the following products.

Blockchain-based, tamper-proof timestamping. Data Integrity as a Service.
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ScoreDetect is an innovative platform that serves as a permanence layer for data provenance, enabling systems and authorities to independently verify data authenticity.
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Blockchain timestamping and certification Software as a Service , SaaS.
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Stampery generates legally binding proofs of existence, integrity and ownership.
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Prove that file existed today
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Issue blockchain-powered certificates for any type of data
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