How It Works
Your tattoo, on Ethereum — what that means, and how to prove it.
How it works, in three steps
- Step 1
Upload
Pick a photo of your tattoo. We fingerprint it (SHA-256) and store it.
- Step 2
Pay once
A single payment — a one-time fee in ETH. No subscription, no recurring fee.
- Step 3
Minted forever
Your tattoo becomes an ERC-721 token that lands in your own wallet, pointing at your image.
What “forever” actually means
Once minted, your tattoo is enshrined on Ethereum — owned by you, verifiable by anyone, for as long as Ethereum itself exists. Not on our servers. On a public blockchain no single company controls — including us.
For the technically curious
On-chain is immutable. Your token, your ownership record, and the reference to your image live on Ethereum, replicated across thousands of nodes. No one can delete or alter them — not even Crypto Tattoo.
The image lives on IPFS, by its content hash. It’s pinned via Pinata, but because it’s addressed by its own bytes it isn’t tied to our servers — you or anyone can re-pin the exact same image. An IPFS file stays retrievable as long as someone keeps it pinned; we pin it, and content-addressing means you’re never locked to us.
If Crypto Tattoo disappeared tomorrow, your token and ownership are untouched on Ethereum, and your image can be re-pinned by anyone from its hash.
Don’t trust us — verify it yourself
It’s a real ERC-721 token you hold in your own wallet — not an account on our site. Everything below is public and checkable.
- Verified source. The contract’s Solidity source is published and verified on Etherscan — what you see above is exactly what runs on-chain.
- Owner-limited upgrades (UUPS). The contract can be upgraded to fix bugs, but only by its owner, and your token and ownership are never affected.