Comments (3)
titusz
commented on July 23, 2024
2
It is in the works. We have requested a multicodec code for the next release of ISCC. See: multiformats/multicodec#252
Also the Instance-Code component of the ISCC is meant to be the prefix of a merkle tree based root hash of the identified content. I have considered to use CIDv1 for that. The main issue with that is, that it is hard to reproduce the dag-pb/unixfs tree hashing of IPFS. At least I did not have success with my attempts. I would be happy to take another look if you can point me to an IPFS compatible python implementation that produces compatible CIDs for data larger than 256kb :)
from iscc-specs.
keesvanbochove
commented on July 23, 2024
1
The usage of multihash (or even CIDs - https://github.com/multiformats/cid) for content identifiers, as well as IPLD for the metadata could be considered for improved interoperability with other Web3 applications.
from iscc-specs.
titusz
commented on July 23, 2024
We now use CIDv1 as the default hash for ISCC Metadata: https://core.iscc.codes/utilities/utils/#iscc_core.utils.cidv1_hex
from iscc-specs.
Related Issues (20)
- Only high level functions should be required for conformance
- Define a standard HTTP User Agent for requests that target ISCC processing
- Update/Remove outdated stubs in iscc.pyi
- Make more clear ISCC is based on content and metadata
- Mention related efforts to establish content based identifiers
- Remove Meta-ID requirement for combinations of components.
- Create constant for Instance-ID chunk size
- Test Instanc-ID with even and odd number of chunks
- As fallback create title from filename if no other metadata is available. HOT 2
- Keep detailed Content-ID fingerprints as ISCC metadata.
- Specify handling of PDF (ISO 32000)
- Specify details of "convert image to grayscale"
- Switch ci/tests to github actions
- Change Instance-ID algrorithm to BLAKE3 HOT 5
- Change Data-ID to chunking algorithm compatible with other implementations.
- Implement Content-Code for binary data. HOT 1
- Clearly define the base58 alphabet HOT 5
- Switch to base32 encoding
- content specific IDs HOT 1
- Cython implementation of minimum_hash is 3x faster HOT 1
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