https://stampd.org/tags/blockchain-timestamps/Recent content in Blockchain Timestamps on StampD.org – The Time Dimension of BlockchainHugoenTue, 02 Jun 2026 02:00:00 +0000https://stampd.org/blockchain-timestamps-and-digital-signature-laws-how-global-legislation-recognized-on-chain-proof-of-existence/Tue, 02 Jun 2026 02:00:00 +0000https://stampd.org/blockchain-timestamps-and-digital-signature-laws-how-global-legislation-recognized-on-chain-proof-of-existence/From the Utah Digital Signature Act (1995) to Italy’s DLT Timestamp Law (2019), global legislation has gradually built a legal framework that recognizes blockchain timestamps as valid proof of existence. This article examines how five major legal systems — the US, EU, China, Italy, and international model laws — treat on-chain timestamps, and why the distinction between ‘proving existence’ and ‘proving identity’ is the key to understanding their legal status.https://stampd.org/blockchain-timestamps-prior-art-patent/Tue, 02 Jun 2026 02:00:00 +0000https://stampd.org/blockchain-timestamps-prior-art-patent/Blockchain timestamps are emerging as a powerful tool for establishing prior art in patent disputes. From Nym Technologies’ use of a Bitcoin timestamp to invalidate a patent claim to China’s Internet Courts accepting on-chain evidence, this article examines how cryptographic timestamps are reshaping intellectual property law — and why every inventor should timestamp their work on-chain.https://stampd.org/blockchain-timestamps-vs-notarization/Fri, 29 May 2026 02:00:00 +0000https://stampd.org/blockchain-timestamps-vs-notarization/From the Lex Cornelia of 81 BCE to Bitcoin’s genesis block in 2009, the human need to authenticate documents at a specific point in time has evolved from human witnesses to cryptographic proof. This article compares blockchain timestamps and traditional notarization across five dimensions — cost, speed, security, volume, and legal recognition — and finds that while notarization verifies identity, blockchain timestamps verify existence, together forming a complete system of digital document authentication.https://stampd.org/blockchain-timestamps-as-digital-art-provenance-from-quantum-to-cryptopunks/Thu, 28 May 2026 02:00:00 +0000https://stampd.org/blockchain-timestamps-as-digital-art-provenance-from-quantum-to-cryptopunks/Blockchain timestamps provide the strongest form of digital art provenance ever created — immutable, independently verifiable, and globally accessible. From Quantum (2014) to CryptoPunks (2017), on-chain timestamps have transformed how we establish authenticity and ownership in the digital art world.