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CLUSTER BLOCKCHAIN-HASHES-WEB · 7 ENTRIES · EARLIEST ENTRY 2026-09-02

blockchain document existence proof

This cluster consists of web apps that hash files, texts, or documents in the browser and anchor the resulting hash on a blockchain (e.g., Stellar) to create a public proof of existence and data integrity. The cluster's dated history is too thin to read a shape from — it predates the index start or its members lack source dates, as only 0 dated entries exist before 2026-08. Traction leadership is led by proofline-dapp with 1 star, while stellar-data-integrity and DeTransfer each have 0 stars.

Entry timeline

ENTRY TIMELINE

AUG 2026: 3SEP 2026: 4
AUG 2026SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 7 unlabelled

Operator · 1 hobby · 2 indie · 4 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 7 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01stellar-data-integrity0★27 days—indieWeb app that hashes files, texts, and documents and anchors the hashes on the Stellar blockchain to prove data integrity.
  2. 02qichwata-yachakuy0★25 days—indieWeb service that computes SHA-256 hashes of files, texts, and documents and anchors them on a blockchain to prove data integrity.
  3. 03proofline-dapp1★1 mo—Web app that creates a public proof of document existence by hashing the document in the browser and storing only its hash on the blockchain.
  4. 04DeTransfer0★unknownliveWeb application for transferring files on-chain using blockchain technology.
  5. 05Sadaiv CI: Backup your Repositories on Filecoin Network0★unknownliveWeb app that backs up code repositories to the Filecoin network for decentralized storage.
  6. 06ProofBase | 「私が先に考えた」という証拠をブロックチェーンに刻む0★unknownliveWeb app that hashes files in the browser and stamps them on a blockchain to prove an idea's existence.
  7. 07Solana x LeetDroid0★unknownlivehobbyWeb app that stores LeetCode profiles on a blockchain, providing permanent on-chain proof of coding achievements.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.