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Mega
pCloud
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BlockchainSign
OriginStamp
ScoreDetect
Woleet
Stampery
Bitstamped
Certificado
Proof of existence
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 receives the file at all. The document is hashed with SHA-256 in the user's own browser using the Web Crypto API, and only the resulting hash is written to the Ethereum blockchain.
The result is a certificate file recording the hash, the transaction and the timestamp. Because each certificate is its own Ethereum L1 transaction, with the payload hash readable as UTF-8 on a public block explorer, verification does not run through the vendor's portal: if BlockchainSign shut down, existing certificates would still verify.
There is no subscription and no cryptocurrency wallet involved. Certificates are bought as credits with a card and spent when needed. Credits are valid for 12 months; an issued certificate never expires.
Key points
What it does not do. A timestamp proves that a file existed in that exact form at that time โ existence and integrity. It does not prove authorship or ownership, and it is not a substitute for copyright registration. There is no API or integrations yet, and no eIDAS qualified timestamp.
Box
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Based on our record, Box seems to be more popular. It has been mentiond 93 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Box | http://box.com | San Francisco Bay Area (US) | Warsaw (PL) | HYBRID Box, Inc. (NASDAQ: BOX) develops and markets cloud-based content management, collaboration, and file sharing tools for businesses. Several roles available spanning frontend and backend segments, mid-career reliability, observability, database, and productivity engineering roles. http://careers.box.com. - Source: Hacker News / over 1 year ago
I've used box.com with pretty good results, but expect to pay through the nose for the privilege. Source: over 2 years ago
So I have all my mountain goats stuff on my Spotify local files, I found a random comment here from like 4 years ago with this guys box.com storage collection of all of his mountain goats songs, recently the link stopped working :( if anyone has it (i know its a pretty niche ask) I would love to have it back. Source: about 3 years ago
Alright. Mind if I check with you a couple weeks from now to see how this turns out for you? I've never heard of box.com. I'm checking out their website now. Source: about 3 years ago
You would be surprised how stupid Label employees can be, they even give stuff that is "confidential" to unpaid interns to post on their internal pages like box.com or their disco.ac pages. I've seen so many demos, instrumentals and albums posted somewhere public because they got someone to do a half assed job at it. Source: about 3 years ago
Dropbox - Online Sync and File Sharing
OriginStamp - Blockchain-based, tamper-proof timestamping. Data Integrity as a Service.
Google Drive - Access and sync your files anywhere
ScoreDetect - ScoreDetect is an innovative platform that serves as a permanence layer for data provenance, enabling systems and authorities to independently verify data authenticity.
Microsoft OneDrive - Secure access, sharing & file storage
Woleet - Blockchain timestamping and certification Software as a Service , SaaS.