otoco.ethcontract contains the Master LLC Operating Agreement which derives its authority to establish Series LLCs directly from the Act, e.g. in the case of Delaware:
Pursuant to Section 18-215(b) of the Act and the Limited Liability Company Agreement of the Master LLC (the "Master LLC Agreement"), the Master LLC is authorized to establish separate members and limited liability company interests with separate and distinct rights, powers, duties, obligations, businesses and objectives (each a "Series").
Any signature or execution made through the use of private keys on the blockchain for any matters relating to the Company shall be valid, as if signed in writing.
[...]none of the debts, liabilities, obligations and expenses incurred, contracted for or otherwise existing with respect to the Master LLC generally or any other Series of the Master LLC will be enforceable against the assets of the Company. A member participating in one Series will have no rights or interest with respect to any other Series, other than through that Member's interest in that Series independently acquired by that Member. This Agreement and all provisions herein will be interpreted in a manner to give full effect to the separateness of each Series.
The dissolution and termination of the Company will not, in and of itself, cause or result in the dissolution or termination of the Master, LLC or any other Series.
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Acme LLC, a Series of OtoCo DE LLChowever there is nothing in the Act that prohibits the use of the Series LLC by its individual name,
OtoCo WY LLC - Acme - Series [Number of Series]however users can do business as "Acme". To see their trade name protected, they would want to file a Doing Business As (DBA) with State Registry which Otonomos can help file.