Your poem is copyrighted on creation
As a literary work, a poem is automatically protected once it's written down. You own the rights immediately, with no registration required.
Registering poems
Register on Form TX at copyright.gov. You can register a collection of poems in a single filing, which is the affordable way for poets to cover a whole body of work at once. Registration is needed to sue and to claim statutory damages.
The online sharing problem
Poetry spreads fast on social media and gets screenshotted, reposted, and attributed to the wrong person. Once it's out there, proving you wrote it first can be hard if you have no dated record.
Timestamp before you post
Create dated proof before sharing. Timestamp your poem (or a document of several) with BlockchainSign — the file is hashed in your browser, recorded on Ethereum, and you keep a lifetime certificate that your exact text existed on that date. If a poem is reposted without credit or claimed by someone else, you have tamper-proof evidence of authorship.