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.
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.
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
HDF5® Technical Details License: BSD-style Official Media Type: application/vnd.hdfgroup.hdf5 Standard File Extension: .h5, .hdf5 High-performance data management and storage suite Utilize the HDF5 high performance data software library and file format to manage, process, and store your heterogeneous data. HDF5 is built for fast I/O processing and storage. Download HDF5 Documentation What is HDF5®? HETEROGENEOUS DATA HDF® sup ports […]
Squoosh
Squoosh is the ultimate image optimizer that allows you to compress and compare images with different codecs in your browser.
CIDs: What You Need to Know and Why, Part 1 - Nick's Blog
A deep dive into Content Identifiers, the self-describing cryptographic fingerprints that form the foundation of ATProtocol’s data model.
CSDL | IEEE Computer Society
veritiles v0.3 is out 🚀 The proof format is now DASL + AT Protocol compatible from the ground up, using raw/dag-CBOR CIDs, DRISL descriptors and MASL bundles. github.com/guillaumemichel/veritiles @dasl.ing @atproto.com
GitHub - guillaumemichel/veritiles: Verified map tiles: fetch PMTiles byte ranges from any untrusted HTTP host and cryptographically verify every byte against a content identifier before your map renders it. Zero dependencies; drop-in pmtiles Source for MapLibre GL, Leaflet, and OpenLayers.
github.com