What is Bitcoin Recursive Mnemonic?

What is Bitcoin Recursive Mnemonic?

Recursive Inscriptions is a new type of inscription based on the Ordinals protocol, which was first proposed by Casey Rodarmor, the creator of Ordinals, and was officially updated and merged into the Ordinals protocol in June.

The biggest difference between Recursive Inscriptions and other BRC inscriptions is its “self-referential” nature, meaning that Recursive Inscriptions can use a special syntax to “request” content from other inscriptions.

Because this syntax (code) itself is a text type and takes up very little space, it allows the size of the inscription to exceed the 4 MB limit of the Bitcoin block, and users can create inscriptions on the Bitcoin chain at a lower cost and achieve more complex functions.

At the same time, Recursive Inscriptions can be used to reference other inscriptions, breaking the previous situation where each inscription was independent and unrelated, and opening up the possibility of free combination of inscriptions through the compositional feature.

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How does Recursive Inscriptions work?

In the past, if a 10K PFP project was to be issued, the project party would need to prepare 10,000 image files in advance, and then upload these images one by one to the Bitcoin network through engraving to generate so-called “inscriptions”.

In this process, in addition to the large amount of work, due to the block capacity limit of the Bitcoin network, the size of each image must be limited to a very small range to control the cost of engraving, which means that the project party will have to sacrifice the quality of the images. Nevertheless, the actual cost of engraving these 10,000 images is also very high.

However, Recursive Inscriptions first extracts all the features from the Collection for inscription, where each inscription represents every feature in the image, and then creates 10,000 Recursive Inscriptions, each of which uses the “/content/” code to request images from the “Feature Inscriptions”, and finally presents the complete image through programming.

Element features on Doodles (example)

As an example, Doodles on Ethereum has 10,000 issuances, but actually only has 265 element features. If it were on the Bitcoin network, the project party could only engrave 265 “Feature Inscriptions” and then generate such a series of images by requesting content through permutation and combination.

Therefore, compared to directly engraving, the recursive inscription method not only requires fewer engraved images, but also occupies much less block space (the volume of feature images is much smaller than that of complete images), and the project deployment and user required for users are also greatly reduced when casting. cost.

Some people also use “movable type printing” to explain recursive inscriptions-before movable type printing, it would take 100 stone tablets to engrave a 100-page book, which is time-consuming and laborious, but with movable type printing, you only need to first engrave the font library, and then select the words from the font library for typesetting and printing. Here, the 100-page book is the complete picture of the Collection, and the font library is the “feature set” engraved separately.

In addition, the design concept of recursive inscriptions is similar to the Generative BRC-721 (GBRC-721) protocol mentioned when we introduced the Ordinals family earlier, but the difference is that recursive inscriptions are more basic and have a wider range of future applications.

The significance of recursive inscriptions

The significance of recursive inscriptions is not only to reduce costs and save space, but also the greater significance lies in the composability it brings, which will make the Bitcoin ecosystem have more possibilities.

Since the information recorded by the recursive inscription itself is text (code), the space it occupies is extremely small, and the requested data can theoretically be infinite, so the pictures generated through recursive inscriptions are undoubtedly more refined than those issued based on other existing protocols. project. At the same time, recursive inscriptions break through the 4 MB block limit of Bitcoin, so other large files such as videos, 3D files, and games also have the possibility of being issued on the Bitcoin network.

In addition, since composability has been achieved, then conversely, disassembling inscriptions, similar to the operation of NFT fragmentation, can also become a reality, which will greatly enrich the gameplay of NFT on the Bitcoin ecosystem.

Moreover, recursive inscriptions can request data from other “file libraries” on the Bitcoin chain through a piece of code, and databases can access each other. Bitcoin will become a “local area network”. With the improvement of the composability of inscriptions, domain names will not only link to an address, but can also mount more things. Does this mean that a completely decentralized network that will never shut down can be established based on recursive inscriptions?

In short, recursive inscriptions have injected new life into the narrative of the Bitcoin ecosystem, but the performance limitations of the Bitcoin network itself are still a hard problem. How much impact recursive inscriptions can have and how much consensus they can form is still unknown. After all, even the Ordinals protocol itself has been resisted by Bitcoin core developers. But isn’t innovation always stepping out into the unknown and controversy step by step?

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