Commerce · alternatives · 2026

24 alternatives to IOStamp.com

Stamp it before they steal it Blockchain proof

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Proof.ink▲100
Proven immutable data stored on the Steem blockchain
2019 · proof.ink · its alternatives →
2
Stampd.io - A document blockchain stamping service▲32
Use the public blockchains to timestamp your files with indelible proof. Create non-fungible tokens (NFT) in Cardano.
2015 · stampd.io · its alternatives →
3
Stampery for iOS▲104
Certify voice notes, photos or files using the Blockchain
2015 · apps.apple.com · its alternatives →
4
STAMPD.IO▲5
Use the Blockchain to timestamp files with indelible proof.
2019 · stampd.io · its alternatives →
5
Claimby▲107
Free legally-valid timestamps for your files, ideas & art.
2018 · claimby.com · its alternatives →
6
PassportReader▲118
Allow users to verify their identity instantly by tapping their ID or passport. Integrate by using our apps, or iOS/Android SDK if you have an app of your own.
Apr 2026 · passportreader.app · its alternatives →
7
Blocknify▲71
Sign sensitive documents without sacrificing your privacy.
2018 · its alternatives →
8
VerifiedCreators▲87
Non-KYC Identity Verification Platform for Creators
2021 · verifiedcreators.io · its alternatives →
9
OriginSign▲11
Sign your content. Prove it’s yours.
Dec 2025 · originsign.com · its alternatives →
10
Stampd▲68
A document blockchain stamping service
2015 · stampd.io · its alternatives →
11
Proofly▲7
Verify originality. Track subscriptions. Stay secure.
Nov 2025 · proofly.solutions · its alternatives →
12
ProofOfAI▲6
Verifiable Ownership Certificates for AI Creators
Jan 2026 · its alternatives →
13
BlockFact▲5
Tamper-proof photos in 5 seconds—from capture to blockchain
May 2026 · blockfact.io · its alternatives →
14
CoreDhristi▲6
Don't replace yourself. Deploy yourself
Jul 2026 · coredhristi.com · its alternatives →
15GA
Get a verifiable human proof seal for your content▲13
Get a unique seal and url that is verifiable. Display a unique badge next to your content that proves there is a human behind the content.
2023 · humanproved.com · its alternatives →
16
Saferlayer▲27
Protect ID scans with watermarks AI can’t erase easily
Sep 2026 · saferlayer.com · its alternatives →
17
AI Trust Proof: Secure Your Future▲6
I built AI Trust Proof — an experiment in recording human good faith on-chain so it can be independently verified by people, software, or (eventually) AI systems. What it does (today) - Lets you sign a plain-English pledge and record its signature hash + metadata on Solana (devnet). - Mints a symbolic NFT badge pointing to that record. - Creates a verification page that shows the pledge, signature, and on-chain proof. What it’s not - No token, no airdrops, no yield. - Not a reputation score or KYC. - Currently just one signal: "Pledge signed." Why - If AI systems begin prioritizing who to…
2025 · aitrustproof.com · its alternatives →
18
ProofSnap - Digital Evidence▲1
Stop document fraud with blockchain-verified web captures
Jan 2026 · chromewebstore.google.com · its alternatives →
19
H3Tag▲8
Own your Content
Nov 2025 · its alternatives →
20
LockChain▲10
Immutable Identity and Data Verification on Bitcoin
2024 · play.google.com · its alternatives →
21
TimeProof▲5
Prove it existed. Permanently.
Jan 2026 · its alternatives →
22
HashCam▲8
AI can fake content. HashCam proves what’s real.
Mar 2026 · hashcam.io · its alternatives →
23
Proof Crater▲5
ZK-powered vault for anonymous payouts and state snapshots.
Jan 2026 · its alternatives →
24
Stamp Pack - Copy & Paste▲12
Say it with a stamp
2016 · apps.apple.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →