DA Api main methods definition and tests using Nomos DA Protocol.
The latest revision focuses only on read and write methods and provides MockBlobStore to demonstrate a naive way of indexing blobs for a specific app_id.
Two new definitions were added to the overall DA spec:
VID - verifiable information dispersal structure, which is written into a block after attestations for an original data dispersal are verified by block producer.
VID holds two fields: cert_id and metadata
cert_id is derived from aggregated_column_commitment and rows_commitments using _build_attestation_message
metadata is received together with the actual dispersal certificate from EZ
Metadata - holds app_id and index of the related original data
The da/test_full_flow.py shows a full cycle of original data being stored and retrieved from Nomos DA:
Original data is encoded into blobs;
Blobs are dispersed to nodes;
Attestations are collected and Certificate is formed;
VID is formed from the Certificate;
Nodes receive the VID and index the blobs;
read request is issued to all Nodes to receive specific blob for index of app_id
collected blobs are compared to the original blobs
DA Api main methods definition and tests using Nomos DA Protocol.
The latest revision focuses only on
readandwritemethods and providesMockBlobStoreto demonstrate a naive way of indexing blobs for a specificapp_id.Two new definitions were added to the overall DA spec:
cert_idandmetadatacert_idis derived fromaggregated_column_commitmentandrows_commitmentsusing _build_attestation_messagemetadatais received together with the actual dispersal certificate from EZapp_idandindexof the related original dataThe
da/test_full_flow.pyshows a full cycle of original data being stored and retrieved from Nomos DA:readrequest is issued to all Nodes to receive specific blob forindexofapp_id