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NFT Letters
A blockchain-based service that transforms personal letters into encrypted NFTs on Polygon, allowing senders to preserve meaningful correspondence while ensuring only intended recipients can read them
last checked Jul 13, 2026 · Unknown
CohortClass of 2026What it is
A blockchain-based service that transforms personal letters into encrypted NFTs on Polygon, allowing senders to preserve meaningful correspondence while ensuring only intended recipients can read them. Perfect for creating lasting digital mementos of important communications.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — unverifiedUnknown
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y