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LibraryMarkets2023Design paperCorpus record

On-Chain Data Containers

ERC 7208. Rachid Ajaja , Matthijs de Vries , Alexandros Athanasopulos , Pavel Rubin , Sebastian Galimberti Romano , Daniel Berbesi , Apostolos Mavropoulos , Barbara Marcano , Daniel Ortega.

ERC 7208, On-Chain Data Containers. A series of interfaces for the abstraction of storage of on-chain data by implementing the logic functions that govern such data on independent smart contracts.

Status in the source: Final. A reading of the public specification, not a copy of it and not a certification.

On-Chain Data Containers is worth reading for the rule it actually adds: A series of interfaces for the abstraction of storage of on-chain data by implementing the logic functions that govern such data on independent smart contracts.

The five-minute read

The rule

A series of interfaces for the abstraction of storage of on-chain data by implementing the logic functions that govern such data on independent smart contracts.

What was already failing

A token that each contract invents from scratch does not transfer, approve, or display in any other contract. The cost of a shared interface is that the interface's holes become everyone's holes.

What the number does not mean

The source marks this final. That is a statement about the text, not a promise that every wallet or node has shipped it.

What a builder should be able to point at

An implementation either constrains DPR or it is a different design.

One action, walked through

  1. Open ERC 7208 and read the status line before the examples.
  2. Write down the rule in one sentence. A fair version of that sentence is: A series of interfaces for the abstraction of storage of on-chain data by implementing the logic functions that govern such data on independent smart contracts.
  3. Name the object that changes: DPR.
  4. Ask what an old client, an old contract, or an offline counterparty does. If the document is silent, the silence is part of the design.

The argument, unpacked

What the text is allowed to settle

Ethereum Request for Comment 7208 can settle the shape of On-Chain Data Containers. It cannot settle whether a later client, a later fork, or a later wallet still does this.

What this page will not pretend

There is no benchmark, no adoption number, and no claim that the mechanism is safe outside the assumptions written in the source.

What has to be true

  • You are implementing ERC 7208 at the status the text itself states: Final.
  • The object that has to change is DPR. A neighbouring document with a similar name is not this one.
  • The standard does not enforce royalties, identity, or a price. If the transfer function does not check it, the chain will not.

What happened after the paper

The source marks this final. That is a statement about the text, not a promise that every wallet or node has shipped it. Later documents can narrow, replace, or ignore this one. Cite the number you mean.

What to check before you use the idea

  • Which function in On-Chain Data Containers actually moves or approves value?
  • What happens on a callback, a zero amount, or a contract recipient that rejects?
  • Which names does the text commit to: DPR?

Terms

ERC 7208
The public text titled On-Chain Data Containers.
Final
The document's own label for how finished the text is. It is not a market fact.

The problem the paper names

A token that each contract invents from scratch does not transfer, approve, or display in any other contract. The cost of a shared interface is that the interface's holes become everyone's holes.

What the design proposes

  • A series of interfaces for the abstraction of storage of on-chain data by implementing the logic functions that govern such data on independent smart contracts.
  • "On-chain Data Containers" (ODCs) refer to the separation and indexing of data storage away from data management.
  • We propose that on-chain data can be abstracted and stored in smart contracts called "Data Objects" (DO), which answer to external data indexing mechanisms named "Data Points" (DP).

How the mechanism is specified

  • Taken from the specification, the next constraint is: "On-chain Data Containers" (ODCs) refer to the separation and indexing of data storage away from data management.
  • Locate DPR in ERC 7208 and apply it to one transaction or call.
  • Then check the failure the class of rule always has: a node that did not upgrade, a reverted call, a replayed signature, or a peer that does not speak the message.

What this page does not treat as proven

  • An application standard is not consensus. A contract can ignore it and still be a valid account.
  • The standard does not enforce royalties, identity, or a price. If the transfer function does not check it, the chain will not.
  • The source marks this final. That is a statement about the text, not a promise that every wallet or node has shipped it.

Why a venture studio still reads it

Use ERC 7208 when a pitch says 'On-Chain Data Containers' without saying whether the rule is consensus, policy, or an interface. The number is the citation. The pitch is not.

This is Blockchain Lab's reading of a public design paper. It is not the paper, not a copy of it, and not an offer of tokens, equity, custody or a partnership. Later network behaviour can diverge from the text. Nothing here is investment, legal or technical advice.

Research status: Design paper. Last reviewed: 1 October 2026. This is a reading of a public paper, not investment, legal or security advice.