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zeekay
929bf86938
PART A — manifest STATE ROOT (the >1-validator prerequisite M0 omitted):
- state.Root() hashes the committed manifest keyspace deterministically via the
zapdb prefix iterator NewIteratorWithStartAndPrefix(nil, prefixManifest),
folding each entry length-prefixed in lexicographic key order. Mirrors
dexvm/state/state.go:395 StateHash, narrowed to the one keyspace.
- VM.computeStateRoot folds blockHash+height with state.Root() (dexvm/vm.go:1260);
ProcessBlock stamps BlockResult.StateRoot (dexvm/vm.go:584).
- The root travels in the block HEADER (new 32B field after parentID; block id
commits to it). Block.Verify recomputes it and REJECTS a mismatch
(errStateRootMismatch) + Aborts staged writes — the safety gate dexvm computed
but never compared.
- Tests: determinism across write order, change-sensitivity (object set / etag /
size / fileIds), Verify-rejects-tampered-root.
PART B — S3 OBJECT path, on-chain-metadata / off-chain-blob split, end to end
(schain/object/):
- Store.PutObject streams the blob to a Volume (OFF chain) -> fid, then commits
only PutManifest{bucket,object,[fid],size,etag} to the VM through a real block
(ON chain). GetObject reads the manifest back and reconstructs from the volume.
- object.Volume is the seam; MemVolume satisfies it for M1 with a fid shape
mirroring hanzo/s3 needle.FileId and etag = base64(md5(blob)) (= ContentMd5).
- M2 PLUG POINT (object/volume.go): swap MemVolume for a github.com/hanzoai/s3
s3/operation.SubmitFiles adapter; nothing in the VM or object.Store changes.
- Test proves blob bytes appear in NO accepted block, the block stays
manifest-small, the manifest IS on chain, and GET byte-reconstructs.
luxfi packages only; zapdb-native; no protobuf in state; SDKROOT needed on macOS.