docs(yellow-paper): Note hash, nullifier, and public data trees#3518
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I think this is good. Will be extending on it for state in a separate PR.
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| # State | ||
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| Global state in the Aztec Network is represented by a set of Merkle trees: the [Note Hash tree](./note_hash_tree.md), [Nullifier tree](./nullifier_tree.md), and [Public Data tree](./public_data_tree.md) reflect the latest state of the chain. |
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There are additional state. But I will add it in an extension to this pr.
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| Global state in the Aztec Network is represented by a set of Merkle trees: the [Note Hash tree](./note_hash_tree.md), [Nullifier tree](./nullifier_tree.md), and [Public Data tree](./public_data_tree.md) reflect the latest state of the chain. | ||
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| Merkle trees are either [append-only](./tree_impls.md#append-only-merkle-trees), for storing immutable data, or [indexed](./tree_impls.md#indexed-merkle-trees), for storing data that requires proofs of non-membership. |
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the wording with immutable can be a little weird. The nullifiers are immutable, but the leaves in the tree won't be because of the successor references.
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True, but it's not a property of indexed trees to have immutable values (eg the public data tree is indexed and not immutable).
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| The Note Hash tree is an [append-only Merkle tree](./tree_impls.md#append-only-merkle-trees) that stores siloed note hashes as its elements. Each element in the tree is a 254-bit altBN-254 scalar field element. This tree is part of the global state, and allows to prove existence of private notes via Merkle membership proofs. | ||
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| Note commitments are immutable once created, since notes cannot be modified. Still, notes can be consumed, which means they can no longer be used. To preserve privacy, a consumed note is not removed from the tree, otherwise it would be possible to link the transaction that created a note with the one that consumed it. Instead, a note is consumed by emitting a deterministic [nullifier](./nullifier_tree.md). |
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We should probably be very consistent on calling either commitments or note hashes.
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Agree. Do we have a consensus on which we should use?
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🤖 I have created a release *beep* *boop* --- <details><summary>aztec-packages: 0.16.7</summary> ## [0.16.7](aztec-packages-v0.16.6...aztec-packages-v0.16.7) (2023-12-06) ### Features * Encapsulated Goblin ([#3524](#3524)) ([2f08423](2f08423)) ### Bug Fixes * Extract whole archive instead of subset ([#3604](#3604)) ([cb000d8](cb000d8)) ### Documentation * **yellow-paper:** Note hash, nullifier, and public data trees ([#3518](#3518)) ([0e2db8b](0e2db8b)) </details> <details><summary>barretenberg.js: 0.16.7</summary> ## [0.16.7](barretenberg.js-v0.16.6...barretenberg.js-v0.16.7) (2023-12-06) ### Miscellaneous * **barretenberg.js:** Synchronize aztec-packages versions </details> <details><summary>barretenberg: 0.16.7</summary> ## [0.16.7](barretenberg-v0.16.6...barretenberg-v0.16.7) (2023-12-06) ### Features * Encapsulated Goblin ([#3524](#3524)) ([2f08423](2f08423)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
AztecBot
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🤖 I have created a release *beep* *boop* --- <details><summary>aztec-packages: 0.16.7</summary> ## [0.16.7](AztecProtocol/aztec-packages@aztec-packages-v0.16.6...aztec-packages-v0.16.7) (2023-12-06) ### Features * Encapsulated Goblin ([#3524](AztecProtocol/aztec-packages#3524)) ([2f08423](AztecProtocol/aztec-packages@2f08423)) ### Bug Fixes * Extract whole archive instead of subset ([#3604](AztecProtocol/aztec-packages#3604)) ([cb000d8](AztecProtocol/aztec-packages@cb000d8)) ### Documentation * **yellow-paper:** Note hash, nullifier, and public data trees ([#3518](AztecProtocol/aztec-packages#3518)) ([0e2db8b](AztecProtocol/aztec-packages@0e2db8b)) </details> <details><summary>barretenberg.js: 0.16.7</summary> ## [0.16.7](AztecProtocol/aztec-packages@barretenberg.js-v0.16.6...barretenberg.js-v0.16.7) (2023-12-06) ### Miscellaneous * **barretenberg.js:** Synchronize aztec-packages versions </details> <details><summary>barretenberg: 0.16.7</summary> ## [0.16.7](AztecProtocol/aztec-packages@barretenberg-v0.16.6...barretenberg-v0.16.7) (2023-12-06) ### Features * Encapsulated Goblin ([#3524](AztecProtocol/aztec-packages#3524)) ([2f08423](AztecProtocol/aztec-packages@2f08423)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
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Related to #3087