Chaindoc Alternative
Abundera Sign vs. Chaindoc
Blockchain anchoring as the whole evidence story. Abundera Sign provides stronger evidence, lower cost, and no per-seat fees.
✕ Chaindoc
- — Signature caps on every tier (5–100/mo) despite pay-per-signature marketing
- — Single-anchor evidence: blockchain only, no multi-provider RFC 3161 TSA redundancy advertised
- — Does not advertise AATL-trusted signing certificates for its own signatures (the Adobe green checkmark)
- — No WORM object-lock storage or tiered retention advertised
- — No court-ready declaration generation advertised
- — No remote online notarization advertised
- — Six template categories shown, no stated template count
✓ Abundera Sign
- ✓ PAdES-LTA digital signatures
- ✓ Dual RFC 3161 trusted timestamps
- ✓ 5 independent verification anchors
- ✓ Public document verification
- ✓ SHA-256 hash-chained audit trail
- ✓ Court-ready declarations
- ✓ Full API on every plan
Pricing comparison
Chaindoc
EUR 0–29/mo (signature-capped tiers)
Free: 5 signatures/mo. Personal: EUR 9/mo (15/mo), Team: EUR 19/mo (60/team), Business: EUR 29/mo (100/company). Marketed as pay-per-signature; the plans are capped monthly subscriptions.
Abundera Sign
$29–299/mo (no per-seat fees)
Starter: $29/mo (50 envelopes, 2 users). Professional: $99/mo (200 envelopes, 5 users). Business: $299/mo (1,000 envelopes, 15 users). API included on all plans. PAYG from $1.49/envelope.
What Abundera Sign includes that Chaindoc doesn't
✓
PAdES-LTA digital signatures
Green checkmark in Adobe Acrobat via AATL certification
✓
Dual RFC 3161 trusted timestamps
Two independent Timestamp Authorities for redundant proof
✓
5 independent verification anchors
GitHub, GitLab, Bitcoin, Sigstore Rekor, dual TSA
✓
Public document verification
Anyone can verify, no account needed
✓
SHA-256 hash-chained audit trail
Tamper detection is automatic and provable
✓
Court-ready declarations
13-section sworn PDF for litigation support
✓
Full API on every plan
No separate product, no extra cost
✓
No per-seat fees
Plans include users, envelope-based pricing
✓
1,000+ ready-to-use templates
Across 30+ categories
✓
26 languages including RTL
Arabic, Urdu, Japanese, Chinese, and more
✓
Cloud import
Dropbox, Google Drive, OneDrive, SharePoint, Box
✓
Credits never expire
Pay-as-you-go packs with no expiration
Ready to switch from Chaindoc?
Try the full signing experience, no account needed. Send yourself a document, sign it, and inspect the cryptographic evidence package.