Guides on copyright, proof of existence, and timestamping your work on the blockchain.https://blockchainsign.ioenhttps://blockchainsign.io/blog/how-to-verify-nft-ownershiphttps://blockchainsign.io/blog/how-to-verify-nft-ownershipHow to check who owns an NFT on-chain, verify a wallet controls it, and understand what that ownership does and does not include.Tue, 04 Aug 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-verify-nft-ownership.jpghttps://blockchainsign.io/blog/free-vs-paid-timestampinghttps://blockchainsign.io/blog/free-vs-paid-timestampingFree timestamping services are real and often good. Here is what you actually give up, what paid services add, and how to decide which fits your situation.Fri, 24 Jul 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/free-vs-paid-timestamping.jpghttps://blockchainsign.io/blog/timestamp-without-uploadinghttps://blockchainsign.io/blog/timestamp-without-uploadingYou never need to upload a file to timestamp it — only its hash. How client-side hashing works, and how to check that a service really isn't taking your document.Thu, 16 Jul 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/timestamp-without-uploading.jpghttps://blockchainsign.io/blog/what-is-cryptographic-timestampinghttps://blockchainsign.io/blog/what-is-cryptographic-timestampingCryptographic timestamping proves data existed at a point in time and has not changed. How RFC 3161 timestamp authorities and blockchain anchoring differ.Wed, 08 Jul 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/what-is-cryptographic-timestamping.jpghttps://blockchainsign.io/blog/does-docusign-use-blockchainhttps://blockchainsign.io/blog/does-docusign-use-blockchainDoes DocuSign use blockchain? Short answer: not really. Here's what DocuSign actually does, where blockchain fits, and the blockchain alternative for proof.Mon, 22 Jun 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/does-docusign-use-blockchain.jpghttps://blockchainsign.io/blog/how-to-prove-a-document-is-authentichttps://blockchainsign.io/blog/how-to-prove-a-document-is-authenticProving a document is authentic means showing it's genuine and unaltered. Here's how document authentication works and how hashing makes tampering obvious.Mon, 15 Jun 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-prove-a-document-is-authentic.jpghttps://blockchainsign.io/blog/do-nfts-prove-ownershiphttps://blockchainsign.io/blog/do-nfts-prove-ownershipAn NFT records a token on a blockchain — but does it prove you own the art or its copyright? Here's what an NFT actually proves, and what it doesn't.Mon, 08 Jun 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/do-nfts-prove-ownership.jpghttps://blockchainsign.io/blog/how-to-protect-your-creative-work-onlinehttps://blockchainsign.io/blog/how-to-protect-your-creative-work-onlinePosting art, writing, or designs online means exposure — and copying. Here's how to protect your creative work online, from watermarks to dated proof.Sat, 30 May 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-protect-your-creative-work-online.jpghttps://blockchainsign.io/blog/what-is-a-hash-sha256https://blockchainsign.io/blog/what-is-a-hash-sha256A hash is a unique fingerprint of a file. Here's what SHA-256 is, how hashing works, and why it can prove a file hasn't changed — explained simply.Thu, 21 May 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/what-is-a-hash-sha256.jpghttps://blockchainsign.io/blog/how-to-protect-an-ideahttps://blockchainsign.io/blog/how-to-protect-an-ideaYou can't copyright or patent a bare idea — but you can protect how you express and share it. Here's how to protect an idea before you pitch it.Tue, 12 May 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-protect-an-idea.jpghttps://blockchainsign.io/blog/how-to-prove-date-of-inventionhttps://blockchainsign.io/blog/how-to-prove-date-of-inventionInventors need dated records for priority and prior art. Here's how invention dating works under a first-to-file system and how timestamping helps.Fri, 01 May 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-prove-date-of-invention.jpghttps://blockchainsign.io/blog/how-to-prove-you-created-something-firsthttps://blockchainsign.io/blog/how-to-prove-you-created-something-firstWhether it's a document, design, or idea, here's how to build dated, tamper-proof evidence that you created your work before anyone else.Mon, 20 Apr 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/how-to-prove-you-created-something-first.jpghttps://blockchainsign.io/blog/what-is-trusted-timestampinghttps://blockchainsign.io/blog/what-is-trusted-timestampingTrusted timestamping proves a file existed at a certain time. Here's how it works, how blockchain timestamping differs from a timestamp authority, and why it matters.Thu, 09 Apr 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/what-is-trusted-timestamping.jpghttps://blockchainsign.io/blog/blockchain-vs-copyright-officehttps://blockchainsign.io/blog/blockchain-vs-copyright-officeDo you need to register with the Copyright Office, or is a blockchain timestamp enough? A clear comparison of what each one does — and when to use both.Thu, 26 Mar 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/blockchain-vs-copyright-office.jpghttps://blockchainsign.io/blog/poor-mans-copyrighthttps://blockchainsign.io/blog/poor-mans-copyrightThe 'poor man's copyright' — mailing yourself a copy of your work — is a myth. Here's why it doesn't hold up, and the modern, tamper-proof alternative.Thu, 12 Mar 2026 00:00:00 GMThttps://blockchainsign.io/img/blog/poor-mans-copyright.jpg