nowfound

Dev tools · November 29, 2017

CHAINPOINT

Anchor an unlimited amount of data to multiple blockchains.

CHAINPOINT launched on November 29, 2017 with 72 votes, #717 of 3,137 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 8 years on.

What it does

CHAINPOINT is an open standard for creating a timestamp proof of any data, file, or process.

Chainpoint is an open standard for anchoring data to a blockchain to create a timestamp proof of any data, file, or series of events.

Chainpoint links a hash of your data to a blockchain and returns a timestamp proof. A Chainpoint Node receives hashes which are aggregated together using a Merkle tree . The root of this tree is published in a Bitcoin transaction. The final Chainpoint proof defines a set of operations that cryptographically link your data to the Bitcoin blockchain. A Chainpoint proof contains the information to verify that the hash of some data is anchored to a blockchain. It proves the data existed at time it was anchored. Chainpoint proofs can be verified without reliance on a trusted third party. Chainpoint Nodes have an HTTP API. You can interact with Nodes using any programming language that supports…from chainpoint.org

Does a similar job

all alternatives →
  • Horizon 1.02016 · sequence.xyz · ▲312

    Realtime, open-source backend for JavaScript apps

  • TimeSeal2023 · timeseal.com · ▲116

    Restoring digital trust, one blockchain timestamp at a time

  • Chain2014 · chain.com · ▲125

    The Block Chain API for Developers

  • Chainrel2023 · chainrel.com · ▲91

    Real-time blockchain event notifications

  • Blockdata2018 · cbinsights.com · ▲107

    A simpler way to do blockchain research

  • Chainwire2020 · chainwire.org · ▲155

    Reach the leading crypto media with the click of a button

More dev tools this month

the category →
  • Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

    Dev tools · 5d ago · github.com

  • /dev/null▲503

    a social network for devs

    Dev tools · 8d ago · dev-null.sh

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 28d ago · openbot.run

  • Talanoa▲346

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 25d ago · talanoa.email

  • Open standard for tracking agent run costs

    Dev tools · 30d ago · openaudr.dev

  • myPip▲271

    Vibe code, publish, and monetize games with AI

    Dev tools · 12d ago · mypip.dev

Source: Product Hunt launch ↗

Launched alongside, November 2017

the whole month →
  • First Search▲1,093

    The world's best startup advice, curated and searchable.

    Growth · 2017 · review.firstround.com

  • The fastest production car ever made ⚡️

    Life & fun · 2017 · tesla.com

  • The safest, and most comfortable truck ever made

    Life & fun · 2017 · tesla.com

  • Create attractive product screenshots with just a few clicks

    Growth · 2017 · theapplaunchpad.com

  • Easy to build, custom landing pages for free

    Growth · 2017 · login.mailchimp.com

  • Thieve▲700

    A curated list of the best products on AliExpress

    Commerce · 2017 · thieve.co