Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
blocksign.red is a blockchain-anchored e-signature platform from Boneyard Software LLC. Users can upload PDFs, paste text, or submit Markdown. After signing is completed, the platform turns signing events into a SHA-256 hash chain and anchors the proof to public blockchains for long-term, independent, tamper-resistant verification. Its positioning is not just “online signing,” but verifiable audit evidence that does not require trusting the vendor.
The product supports browser-based document preparation, placing fields such as signatures, dates, text, and checkboxes, setting signers and either sequential or parallel routing, and sending signing links by email. On the verification side, the materials state that XRPL can confirm within 2–3 seconds, while Bitcoin provides long-term proof via OpenTimestamps. The documentation also mentions publishing Merkle roots to Bitcoin and Base L2. Anyone can verify via an envelope ID at /verify without an account. Its developer capabilities are a notable strength: it offers a REST API, OpenAPI, Bearer Token authentication, Webhook HMAC verification, and MCP Server support, allowing AI Agents to create agreements, upload documents, place fields, and retrieve proofs in a single workflow.
Pricing is relatively clear: pay-as-you-go costs $2.99 per document, including up to 10 pages, with extra pages charged at $0.50 per page and a maximum of 40 pages. The Professional plan is $29/month and includes 100 documents, team workspaces, API access, PAdES-LTV, custom branding, and priority support. Enterprise pricing is custom and targets regulated industries, including QES, HIPAA BAA, SOC 2 Type II reports, SSO/SAML, dedicated support, and on-premises deployment options. Professional is marked as trialable, but the trial period is not disclosed.
The strengths are dual-chain anchoring, an open audit trail, and account-free verification, making it suitable for contract scenarios where evidentiary independence matters. Its API/MCP design is also clearly geared toward developers and automation. The drawbacks are that public materials do not specify payment methods, company location, SLA, or accessibility from China. Some compliance capabilities are described as “supported and roadmap frameworks,” so their actual availability should be confirmed with sales. Compared with mature products such as DocuSign and Adobe Sign, its ecosystem and brand credibility may still need time to prove themselves.
It is suitable for SaaS developers, AI Agent workflows, teams that need to initiate signatures in bulk via API, and industries such as legal, healthcare, and life sciences that value long-term evidence preservation. The main materials do not provide information on access from China, so it is considered unknown; payment methods are also not disclosed. For deployment in China, key points to test include access stability, email deliverability, payment, and data cross-border requirements. Domestic alternatives include 法大大, 上上签, and 契约锁; international alternatives include DocuSign, Adobe Acrobat Sign, and Dropbox Sign.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on blocksign.red official site.
blocksign.red is an Unknown Legal & Tax provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach blocksign.red directly.