Would like to know if anybody knows any free(trial) time-stamp server service. I would like to test time stamping features in itext. Like I used Start Com class 1 as free CA for testing purposes. Hope I made it clear. Hoping someone knows a place Thanks
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1Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, [describe the problem](http://meta.stackoverflow.com/q/254394/) and what has been done so far to solve it. – DavidPostill Jul 31 '14 at 07:22
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2Like http://tsa.safecreative.org/ ? – Konstantin V. Salikhov Jul 31 '14 at 07:48
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great.... exactly what I wanted, plus i could certify. thanks a lot Konstantin !! – caniaskyouaquestion Aug 01 '14 at 07:59
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Let's move this to: http://softwarerecs.stackexchange.com/questions/14139/trusted-timestamping-public-proof-that-i-knew-something-at-a-given-time-without – Ciro Santilli OurBigBook.com Nov 24 '14 at 10:35
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4Somehow it doesn't seem right that this question was closed when it was so darn useful – BCA Oct 06 '17 at 19:41
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You can try one of these publicly accessible RFC 3161 compliant time-stamping services:
- https://freetsa.org
Supports HTTP, HTTPS and TCP transports and has other features - http://time.certum.pl
- http://dse200.ncipher.com/TSS/HttpTspServer
- http://tsa.safecreative.org 5 free requests per day (may not be valid as root CA is 'test') - Safe Creative TSA is no longer active
- http://zeitstempel.dfn.de
- http://tsa.tecxoft.com
Requires registration - http://timestamp.comodoca.com/rfc3161
- http://sha256timestamp.ws.symantec.com/sha256/timestamp
- https://timestamp.geotrust.com/tsa
- http://timestamp.globalsign.com/scripts/timstamp.dll
- https://ca.signfiles.com/tsa/get.aspx
- http://services.globaltrustfinder.com/adss/tsa
- https://tsp.iaik.tugraz.at/tsp/TspRequest
You can also try one of these publicly accessible RFC 3161 compliant client applications:
Feel free to edit the answer and extend the list.
Arek Rzadkiewicz
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jariq
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1thanks jariq. #2 did the job, time stamp is embedded but could not be verified, but that was expected. thanks again !!! – caniaskyouaquestion Aug 01 '14 at 07:51
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1I added one from symantec, not sure how that verification on timestamp works, but this one is verified, maybe because I own a symantec code signing certificate? This answer goes in-dept: http://stackoverflow.com/questions/19528456/verify-rfc-3161-trusted-timestamp – CularBytes May 19 '16 at 16:49
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if you really do mean "Feel free to edit the answer and extend the list." then you should convert this answer into a community wiki. otherwise it's time consuming for us reviewers to to vet the suggested edit. – Jeff Puckett May 19 '16 at 18:04
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2@JeffPuckettII Thanks for the suggestion - I have converted answer to community wiki. I didn't know such option existed :) – jariq May 21 '16 at 06:51
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Adding to this list, as the question is already closed: http://truetimestamp.org/ – Michael Jun 10 '16 at 10:51
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@Michael but truetimestamp.org seems not to be RFC 3161 compliant cryptographic service. It seems to be only online database of the hash values. – jariq Jun 10 '16 at 11:38
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The timestamp provider http://tsa.safecreative.org uses certificates to sign the timestamps which uses a test CA as issuer. And that is not good at all. – Titus T Dec 12 '16 at 16:09
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I think we need to review the RFC, as I am really not confident with some of these alternate timestamp servers. After switching to a different one last build, I had, for the first time ever, an unsigned file get out. Now, that was probably my scripting, but I'm still looking into it. Does anyone know of a question already asks that clarifies this matter? I mean, are *any* good? And, if so, why not just create my own? So, I suspect there *are* limitations (OS support maybe), but I don't know. – dyasta May 15 '17 at 20:03
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Note that zeitstempel.dfn.de [does not permit commercial use](https://www.pki.dfn.de/zeitstempeldienst/). – Frerich Raabe Feb 12 '18 at 07:59
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Hi Guys, I am planning to use http://timestamp.globalsign.com/scripts/timstamp.dll for digital sign pdf on enterprise financial services. Is there any risk of data leakage? – Chowdappa Apr 19 '18 at 07:05
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A secret one used by google https://play.googleapis.com/play/log/timestamp – Kennedy Nyaga Dec 05 '18 at 23:23
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Symantec timestamping services are being shut down on October 31st, 2019 (so don't re-add their URLs!) – mrm Oct 16 '19 at 18:53
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Another one to add that worked for me: http://timestamp.comodoca.com/authenticod – SaiyanGirl Jan 29 '21 at 20:57
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from Europa DSS you have a list of free TSP for testing purpose http://dss.nowina.lu/pki-factory/tsa/list For example this one http://dss.nowina.lu/pki-factory/tsa/good-tsa – David KELLER May 04 '22 at 13:59