The Woleet API provides an easy and cheap way to create timestamped proofs of existence and timestamped proofs of signature for your data. Creating these two types of proofs is often referred as data anchoring and signature anchoring since it relies on the process of cryptographically linking forever a data to a timestamped transaction present in an immutable blockchain. Data can be of any type, since it is not modified by the process. Proofs created by Woleet are linked to the Bitcoin blockchain and so are independent from Woleet (an access to the Bitcoin blockchain and some client side open source code is enough to verify proofs). Using the Woleet API, you can create durable and unfalsifiable cryptographic proofs usable to prove your data existed in a given state at a given date, and optionally was signed by a given signee.
The Woleet API creates proofs of existence conform to the open source standard Chainpoint. Consequently, they can be verified using any tool compatible with this standard, without any interaction with Woleet, and so remain verifiable forever even if Woleet stops its operations.
The Woleet API creates proofs of signature that are an extension of the same standard proposed by Woleet (we are actively involved in the standardization process). Thus, the existence and timestamp of a signature is verifiable using the same tools used to verify proofs of existence. When it comes to verifying the validity of the signature and the signee’s identity, some additional processing is performed: since this processing can be fully performed client side with no additional data, proofs of signature remain verifiable forever even if Woleet stops its operations.