Verify Seal

Check the validity of a Bitcoin seal using your original file and the .ots

100% private: file is processed in your browser and never sent to the server
It's the file you downloaded when creating the seal

  • That your document's hash matches the one registered in the seal
  • The timestamp status on the Bitcoin blockchain
  • If the cryptographic anchor is complete and verified
Offline verification: You can also verify from the command line with ots verify archivo.ots without needing to use this site.