DASL PFPs are a simple structured identifier for referring to similar media using perceptual hashing. They are extensible and algorithm-agnostic, supporting image, video, or other kinds of content fingerprinting.
DASL: MUXL — Media Uniform eXact Layout
MUXL is a deterministic and highly-restrictive subset of ISO-BMFF, enabling stable content-addressed identifiers for video and audio. It's like DRISL for MP4 files!
DASL: RASL — Retrieval of Arbitrary Structures & Links
RASL is a URL scheme used to identify content-addressed DASL resources along with a simple HTTP-based retrieval method.
DASL: ATFISL — Content Discovery with the AT Protocol
ATFISL is a content discovery system for CIDs built with the AT Protocol. Publishers announce download locations for CIDs by publishing records to their AT Protocol repositories. Indexers aggregate these records into a lookup table from CIDs to live locations. ATFISL is complemented by FISL which defines an HTTP query API for ATFISL records.
Chromaprint | AcoustID
Chromaprint is the core component of the AcoustID project. It's a client-side library that implements a custom algorithm for extracting fingerprints from any audio source. Overview of the fingerprint extraction process can be found in the blog post "How does Chromaprint work?".
DASL: DRISL — Deterministic Representation for Interoperable Structures & Links
DRISL is a serialization format that is deterministic (so that the same data will have the same CID) and that features native support for using CIDs as links. It is based on CBOR, using a narrow profile of CBOR's "Core" featureset called "[[cborc-42]]", specified formally in this IETF document.
DASL: MASL — Metadata for Arbitrary Structures & Links
MASL is a CBOR-based metadata system that is designed to work well with content-addressed and decentralised systems, to enable fully self-contained, self-certified content distribution.
DASL — Data-Addressed Structures & Links
A small set of simple, standard primitives to work on content-addressed data.
DASL — Data-Addressed Structures & Links
A small set of simple, standard primitives to work on content-addressed data.
DASL: FISL — Finding Internet Structures & Links
FISL is an HTTP lookup API that maps CIDs to locations, so that a client with a CID can find out where to retrieve it from and who announced it. A client sends a CID, and the index returns the URLs where content can be retrieved, along with the identity of the publisher when known. FISL specifies only the query interface, so it works with any indexing system that supplies location records.
Robustness of Practical Perceptual Hashing Algorithms to...
Perceptual hashing algorithms (PHAs) are widely used for identifying illegal online content and are thus integral to various sensitive applications. However, due to their hasty deployment in...
The HDF5® Library & File Format - The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies
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ATFISL — content discovery with the AT Protocol
How ATFISL publishes CID locations as dev.fisl.at records on the AT Protocol: the record, the record key, the Lexicon, and indexing.
Squoosh
Squoosh is the ultimate image optimizer that allows you to compress and compare images with different codecs in your browser.
