Tweet ID to date
Crypto & AI
Paste a public X or Twitter post link. The post ID inside it encodes the moment the post was created, to the millisecond. You also get a clean address to open, so you can compare the post with the claim you are reading.
Start with the post link
Try an example
An example from X's own documentationWhen it was posted
14 February 2020, 19:00:55.723 UTC
Publication time encoded in the post ID. X assigns the ID when the post is created, so this is the moment it was posted.
- ISO 8601 (UTC)
- 2020-02-14T19:00:55.723Z
- Post ID in this URL
- 1228393702244134912
- Handle in this URL
- @XDevelopers
- Clean post URL
- https://x.com/XDevelopers/status/1228393702244134912
An edited post gets a new ID, so the time belongs to this version of the post. The handle in a link can be outdated or wrong: open X to read the visible author, conversation and cited material.
Query parameters, media suffixes and fragments have been removed. No post content was fetched.
How to read it
Read the actual post
Compare the visible author, full text and date with the screenshot or summary you saw. Open replies or a quoted post when the claim depends on that context. Check for an edit notice.
Compare the time with the claim
A post cannot report an event that happened after it was published. If a screenshot shows a different date, or the post is presented as a reaction to something later, open the original and compare. Times are in UTC; convert them to the timezone of the event.
Name the claim
Write down what would have to be true: a measured result, an event, a prediction or the author's opinion. A repost, quotation and the author's own conclusion can make different claims.
Open the supporting material
Follow the cited report, paper, project announcement, code or transaction record. Find the part that supports the claim, including its date, method and relevant version. A link to a homepage may not establish the specific point.
Check what the evidence covers
For a benchmark, compare the task, model version and evaluation rule. For a crypto claim, compare the network, transaction, project and period. Decide whether the evidence supports the full claim or only part of it.
Check the person's stated connection
When a claim depends on a role, affiliation or interest, follow the person's own linked site and the project's named team or announcement. A name in a URL, a badge or an explorer label does not establish that connection.
Keep the conclusion within the evidence
- The time comes from the ID in the URL. It does not establish who wrote the post, whether it is still available or what it said before an edit: an edited post gets a new ID.
- Posts from before 4 November 2010 used sequential IDs that carry no time.
- A clean link gives you a place to continue reading. The post and its cited sources still need to be opened and assessed.
Sources and next reads
- X IDs
X describes its 64-bit IDs and why they must be kept as strings.
- TweetedAt: finding post timestamps from IDs
Web Science and Digital Libraries research group: the Snowflake formula and its epoch, 1288834974657 ms.
- X: Post Lookup quickstart
- X: Find a post URL
- X: Change your username
- Find what the author posted before
Build an X search for one account, a date range and the words of the claim.
- Follow a claim back to its source
Read a real argument in its original context, then compare the material it points to.
- Read what an AI agent demo shows
Trace tool calls, execution state and the stated success criteria rather than relying on a short clip.