







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: 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: Perceptual Fingerprint (PFP)
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: 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: 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: Content-Addressable aRchives (CAR)
The CAR format offers a serialized representation of set of content-addressed resources in one single concatenated stream, alongside a header that describes that content.

DASL — Data-Addressed Structures & Links
A small set of simple, standard primitives to work on content-addressed data.

S2PA and MUXL: Bringing Video to Content-Addressed Systems - How Streamplace Works
S2PA and MUXL: Bringing Video to Content-Addressed Systems - How Streamplace Works
DASL — Data-Addressed Structures & Links
A small set of simple, standard primitives to work on content-addressed data.

JPEG XL
The JPEG XL Image Coding System[8] (JPEG XL, sometimes shortened to JXL) is an image format that supports both lossy and lossless compression. It was developed by the Joint Photographic Experts Group (JPEG), Google and Cloudinary. It is a free and open standard defined by ISO/IEC 18181. The standard consists of four parts that cover the Core coding system, File format, Conformance testing, and Reference software, respectively.
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We are the developers of SDL, ask us anything!
496 votes, 257 comments. Hello! We are Sam Lantinga ( u/slouken ) and Ryan C. Gordon ( u/icculus ), developers of Simple Directmedia Layer (SDL). We…
DASL: Tiles Protocol: Data Passing
Passsing data to and from tiles is key to integrating tiles in arbitrary environments. This protocol specifies precisely that.

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.
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