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Ossein

Anatomical Chart PFPs

Marketplace

Launch on OpenSea, Robinhood Chain.

Ossein ships as layered APNG traits and as flattened GIF tokens. OpenSea wants the GIF bake of those loops. The mint is free. The APNG stack stays in this repo for the studio and any later restack.

OpenSea · Robinhood Chain
Network
Robinhood Chain
Chain ID
4663
Currency
ETH
Supply
10,000
Mint
Free

Project description

Paste this into OpenSea.

Collection name Ossein. Symbol OSSN. Category PFPs. The same copy lives in public/metadata/ossein-description.txt.

Ossein.

A 10,000-piece collection of looping anatomical-chart PFP GIFs on Robinhood Chain. Each plate is stacked from seven plates — sheet, rule, specimen, joint, leader, stain, and chalk — then flattened onto one 12-frame GIF. Eight dancing specimens: cortical, avian, feline, equine, frog, ape, fish, and serpent. Ivory bone. Hairline ink. The step is the loop.

A medical chart, not a leather puppet. Not neon tubing. Not soy-ink blots. The specimen stays seated on one sheet. The dance is in the joints. One shared clock.

Minting free on Robinhood Chain (chain ID 4663). Gas is ETH.

Listing kit

Logo, featured, banner, collection GIF.

  • Logo preview

    Logo

    512×512, 1:1

    public/brand/logo-ossein.png

  • Featured preview

    Featured

    1200×800, 3:2

    public/brand/featured-ossein.jpg

  • OpenSea banner preview

    OpenSea banner

    2800×700, 4:1

    public/brand/banner-ossein-opensea.jpg

  • Collection GIF preview

    Collection GIF

    1000×1000 loop

    public/brand/collection-ossein.gif

Wallet setup

RPC https://rpc.mainnet.chain.robinhood.com
Explorer https://robinhoodchain.blockscout.com

  1. 1

    Traits stay layered. The drop is flattened.

    OpenSea does not stack APNG layers for you. Studio is a live compositor. For a Drop you upload finished GIFs plus a CSV. Bake the full 10,000-token pack with python scripts/generate_ossein.py --all — gifs/, OSSN-opensea-drop.csv, and the kit README land in generated/ossein/.

  2. 2

    Create a Drop on Robinhood Chain

    In OpenSea Studio, create a Drop on Robinhood Chain (chain ID 4663). Set supply to 10,000, set mint to free, paste the project description, and upload the listing kit from public/brand.

  3. 3

    Bulk-upload GIFs + CSV

    Upload every file in generated/ossein/gifs (1.gif–10000.gif) and generated/ossein/OSSN-opensea-drop.csv. The CSV already uses OpenSea’s required headers (tokenID, name, description, file_name, attributes[Trait]). OpenSea plays GIF, not APNG. Preview the loops, then publish.

  4. 4

    Or deploy the ERC-721 yourself

    contracts/Ossein.sol mints token IDs 1–10,000 at 0 ETH. Pin generated/ossein/json and set the base URI. Import that contract on OpenSea instead of using a Drop if you want a custom mint. Gas is ETH.