[← Back to work](https://cheyuwu.com/work/) NFT / Digital2021 # CryptoPochi [video](https://media.cheyuwu.com/work/cryptopochi/d1bb441a-hero.mp4) A demonstration of the 2025 landscape build: four to six Pochis on a dotted ground, poked, dragged and lifted. Muted loop; the section with sound is below.Muted loop Archive year 2021 Type NFT / Digital Artist Che-Yu Wu 吳哲宇 Form Interactive generative NFT: each one is a p5.js and Matter.js web page, draggable and driven together by on-chain events Chain and contract Ethereum, own ERC-721 contract 0x1111…f793 (deployed 5 September 2021); OpenSea for display and secondary sales Editions 732, numbered #0 to #731; the contract ceiling was 1,500, and the team closed the sale at the 732nd mint, thirty-four hours in Release Early mint for Sea Ham holders at 15:00 UTC on 5 September 2021 (0.5 ETH); public Dutch auction from 15:00 on 6 September, 8 ETH falling a step every half hour to 2 ETH after six hours; the last one minted at 00:47 on 7 September On-chain broadcast Contract event PochiAction: jump, say something, go ham, clear; holders pay only gas, others 0.03 ETH; 94 events from 6 September 2021 to 21 June 2023 Origin [The daily sketch Sleepy Pochi of 26 May 2020: a Matter.js soft-body test that flops back down when you drag it; with a nod to LocoRoco](https://cheyuwu.com/sketch/905319/) Licence CC BY-NC-SA 4.0 Database [The 732 hashes, trait shares, palettes and re-run captures](https://cheyuwu.com/nft/cryptopochi/) [Original page & interactive experience](https://cheyuwu.com/nft/cryptopochi) Contents & work details Archive year 2021 Type NFT / Digital Artist Che-Yu Wu 吳哲宇 Form Interactive generative NFT: each one is a p5.js and Matter.js web page, draggable and driven together by on-chain events Chain and contract Ethereum, own ERC-721 contract 0x1111…f793 (deployed 5 September 2021); OpenSea for display and secondary sales Editions 732, numbered #0 to #731; the contract ceiling was 1,500, and the team closed the sale at the 732nd mint, thirty-four hours in Release Early mint for Sea Ham holders at 15:00 UTC on 5 September 2021 (0.5 ETH); public Dutch auction from 15:00 on 6 September, 8 ETH falling a step every half hour to 2 ETH after six hours; the last one minted at 00:47 on 7 September On-chain broadcast Contract event PochiAction: jump, say something, go ham, clear; holders pay only gas, others 0.03 ETH; 94 events from 6 September 2021 to 21 June 2023 Origin The daily sketch Sleepy Pochi of 26 May 2020: a Matter.js soft-body test that flops back down when you drag it; with a nod to LocoRoco Licence CC BY-NC-SA 4.0 Database The 732 hashes, trait shares, palettes and re-run captures [Original page & interactive experience](https://cheyuwu.com/nft/cryptopochi) Overview They are a crowd of soft, squishy creatures, each a little like you or me, and each of them cynical: some look down on the others, some laugh, some follow your cursor around, one wears a crown with an impatient face. Their bodies are physics simulations; drag one and it stretches, let go and it flops back down, unwilling. Their faces are expressions, hair, glasses and accessories grown at random, and with the background and the palette, thirty-two numbers decide one Pochi. In 2021, after Strange Robots had been copied, we wanted to put something out quickly; the Art Blocks queue was out of reach, so with an engineer in Hong Kong I wrote our own contract and made them into animated NFTs you could play with in the browser. What fascinated me then was putting a whole web page inside the frame of an NFT, interactive, one of the very early interactive NFTs. Pochis can also do something no other NFT could: all the Pochis in the world can act together. Anyone can send an event to the contract, “everybody jump” or “say this”, and every Pochi open on a screen anywhere jumps at the same moment or says the line, a decentralised broadcast, a pet raised in common. Ninety-four lines were written on chain forever: from “Hello World!” on 6 September 2021 through “Hams 🤝 Pochis”, “Hello Taiwan”, “MetaverseTaipei 2022” and “hello nycu” to the last, “Rugged”, on 21 June 2023. All seven hundred and thirty-two were re-run one by one with the 2021 minting build and kept in the database page; every one can still be opened and dragged. ## #0, dragged about (16 s) [video](https://media.cheyuwu.com/work/cryptopochi/28469277-token0-2023.mp4) The first Pochi: Swift palette, circles, a cap, impatient. Dragged about in a recording from June 2023; each time it flops back down, unwilling. ## From Sleepy Pochi to a Pochi that talks In May 2020 the pandemic kept everyone at home and I made one piece a day for OpenProcessing. The one on 26 May was a Matter.js soft-body test: a wobbly, squishy creature that never seemed to get enough sleep, and flopped back down unwillingly when you dragged it about. Its eyes were the hard part, placed at an offset from the midpoint and angle of two particular nodes, blinking on a remainder of the frame count; the little circles beside it are the body’s nodes, which the physics engine uses for collisions. I called it Pochi. A year later it became seven hundred and thirty-two. The hash becomes thirty-two numbers: the first decides how many, one to three; then the variation, one of eight palettes, one of twelve backgrounds, and about a two percent chance of belonging to the Hamily; then each Pochi draws its own emotion, hair, eyes, accessory and species, and among the species are Mini, Square, Squiggly, Prisoner, Giant and Ham Fan. Sea Ham holders went first, one Pochi reserved for each Ham, and those who had drawn craft hams received an airdrop first; the site opened with “Hey, they are Pochis. They are you and me.” Eight of them, genome cards8 ![CryptoPochi #0: The first: Swift palette, circles, a cap, impatient](https://media.cheyuwu.com/work/cryptopochi/48f2273f-genome-000.webp) #0CryptoPochi輕快 hash` 0x9f08f44a2e323770344ca998ed929ca63231b52cf5cb332010b14915b3e9a1d5 ` 42e2b8f3dfbf2d82b707004deb8a90 palette Swift**16% background Circles**11% count 1**41% Hamily no**97% Pochi 1 emotion Impatient**6% Pochi 1 hair Cap**9% Pochi 1 eyes None**84% Pochi 1 accessory None**41% Pochi 1 species Normal**92% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=0&tokenHash=0x9f08f44a2e323770344ca998ed929ca63231b52cf5cb332010b14915b3e9a1d5)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=0) ![CryptoPochi #731: The last: two of them, Playful palette, dots, a flower, grumpy](https://media.cheyuwu.com/work/cryptopochi/625f317f-genome-731.webp) #731CryptoPochi玩心 hash` 0x9675bc16205d2d61cf67f5494ab6fafb6deb03c256149ab25e6239b56d6096e2 ` e9ce2cbf211ef9dc5c69a197e5f993 palette Playful**16% background Dots**11% count 2**35% Hamily no**97% Pochi 1 emotion Grumpy**11% Pochi 1 hair Flower**7% Pochi 1 eyes None**84% Pochi 1 accessory Tie**18% Pochi 1 species Normal**92% minted 2021-09-07[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=731&tokenHash=0x9675bc16205d2d61cf67f5494ab6fafb6deb03c256149ab25e6239b56d6096e2)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=731) ![CryptoPochi #393: Hamily: three of them on waves](https://media.cheyuwu.com/work/cryptopochi/c59dd1ab-genome-393.webp) #393CryptoPochi輕快 hash` 0xefe3cc9eb7173975f065045093c62bf862ce4aec9095fbd224ccde68c99fa716 ` 42e2b8f3dfbf2d82b707004deb8a90 palette Swift**16% background Wave**6% count 3**24% Hamily yes**3% Pochi 1 emotion Cool**14% Pochi 1 hair Afro**21% Pochi 1 eyes None**84% Pochi 1 accessory Bow tie**15% Pochi 1 species Normal**92% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=393&tokenHash=0xefe3cc9eb7173975f065045093c62bf862ce4aec9095fbd224ccde68c99fa716)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=393) ![CryptoPochi #86: Black and white, two of them](https://media.cheyuwu.com/work/cryptopochi/8e455a76-genome-086.webp) #86CryptoPochi黑白 hash` 0x2cbaab25334b73d9ec87c451d736664a9ce2fe0e4f3eb89bff299cb74f79afbb ` 000000ffffff palette Black & white**10% background Circles**11% count 2**35% Hamily no**97% Pochi 1 emotion Sad**14% Pochi 1 hair Flower**7% Pochi 1 eyes None**84% Pochi 1 accessory None**41% Pochi 1 species Normal**92% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=86&tokenHash=0x2cbaab25334b73d9ec87c451d736664a9ce2fe0e4f3eb89bff299cb74f79afbb)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=86) ![CryptoPochi #54: Space: gravity near zero, three of them drifting](https://media.cheyuwu.com/work/cryptopochi/50b5dcee-genome-054.webp) #54CryptoPochi玩心 hash` 0x40de8efdf6f92fa4fa2f4cb0f9d128470cd9ad2ced1790528eda1ccc235f7bca ` e9ce2cbf211ef9dc5c69a197e5f993 palette Playful**16% background Space**4% count 3**24% Hamily no**97% Pochi 1 emotion Blanky**17% Pochi 1 hair Crown**20% Pochi 1 eyes None**84% Pochi 1 accessory None**41% Pochi 1 species Normal**92% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=54&tokenHash=0x40de8efdf6f92fa4fa2f4cb0f9d128470cd9ad2ced1790528eda1ccc235f7bca)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=54) ![CryptoPochi #64: Giant species in the snow](https://media.cheyuwu.com/work/cryptopochi/63fd0d08-genome-064.webp) #64CryptoPochi經典 hash` 0x97038df8c8c411ef1a0a9179582036837a1c2e201e54c8e6f45fe21b1a1703d1 ` 083d77fa664aebebd3f95738f4d35eee964b palette Classic**16% background Snow**5% count 1**41% Hamily no**97% Pochi 1 emotion Shocked**14% Pochi 1 hair Flower**7% Pochi 1 eyes None**84% Pochi 1 accessory Bow tie**15% Pochi 1 species Giant**<1% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=64&tokenHash=0x97038df8c8c411ef1a0a9179582036837a1c2e201e54c8e6f45fe21b1a1703d1)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=64) ![CryptoPochi #27: Prisoner species on a grid](https://media.cheyuwu.com/work/cryptopochi/29fce2e7-genome-027.webp) #27CryptoPochi鮮豔 hash` 0x7ebf6b438cbb0e063703c43ab661a38cdaeacd8c082cc8681dfed4f2e318265b ` 262626acbfa4ff1b1ce2e8ceff7f11 palette Vibrant**10% background Grid**12% count 3**24% Hamily no**97% Pochi 1 emotion Blanky**17% Pochi 1 hair Flower**7% Pochi 1 eyes None**84% Pochi 1 accessory Button**5% Pochi 1 species Prisoner**2% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=27&tokenHash=0x7ebf6b438cbb0e063703c43ab661a38cdaeacd8c082cc8681dfed4f2e318265b)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=27) ![CryptoPochi #26: Sea Ham background, three of them](https://media.cheyuwu.com/work/cryptopochi/fa157099-genome-026.webp) #26CryptoPochi玩心 hash` 0xfbf671fd8887beff99470716738305bcb091954d57d582a93b1cf6f080c53832 ` e9ce2cbf211ef9dc5c69a197e5f993 palette Playful**16% background Sea Ham**4% count 3**24% Hamily no**97% Pochi 1 emotion Grumpy**11% Pochi 1 hair Afro**21% Pochi 1 eyes Eyeshade**8% Pochi 1 accessory None**41% Pochi 1 species Normal**92% minted 2021-09-05[Open this one (drag it) ↗](https://pochi.art.cheyuwu.com/token/?tokenId=26&tokenHash=0xfbf671fd8887beff99470716738305bcb091954d57d582a93b1cf6f080c53832)[In the database →](https://cheyuwu.com/nft/cryptopochi/?n=26) A share is the count of that trait among the seven hundred and thirty-two; the pictures are captures from the 2021 minting build re-run in September 2026, the pose slightly different from the original, the genes identical. The on-chain broadcast: how one line reaches every Pochi5 1. 01 ### Someone sends an action Press Pochi Please Jump, Say Something, Go Ham or Clear on the site; holders pay only gas, others 0.03 ETH to keep spam down 2. 02 ### The event goes on chain The contract emits a PochiAction event: time, type, up to twenty characters of text, sender 3. 03 ### Every open Pochi reads it Every open page polls the contract’s events and lines up the actions of the last thirty minutes 4. 04 ### They do it together Jump: once every three seconds, five times; say: the line shows for ten seconds; go ham: turn into a ham for fifteen seconds; clear: reset everything 5. 05 ### It stays on chain Ninety-four events forever: seventy-five sayings, eleven go-hams, six jumps, two clears, from thirty-two addresses No Socket.io and no server in between: each Pochi reads the chain for itself. Lines every Pochi in the world said together, twelve of ninety-four12 1. 01 ### 2021-09-06 “Hello World!”: The first, from the team 2. 02 ### 2021-09-06 “Hams 🤝 Pochis”: Sea Hams and Pochis shake hands 3. 03 ### 2021-09-06 “I want to sleeeeeep”: It always wanted to sleep 4. 04 ### 2021-09-07 “Sold out!!!”: The day the sale closed 5. 05 ### 2021-09-07 “Hello Taiwan” 6. 06 ### 2021-09-07 “We Got Checkmark!”: Verified on OpenSea 7. 07 ### 2021-09-17 “gm mfers”: Sent three times 8. 08 ### 2021-11-25 “Hammy Thanksgiving” 9. 09 ### 2022-04-01 “MetaverseTaipei 2022”: On the eve of Chaos Laboratory 10. 10 ### 2022-04-28 “hi Cheyu,hug~” 11. 11 ### 2023-05-04 “hello nycu”: From a class at NYCU 12. 12 ### 2023-06-21 “Rugged”: The last line All ninety-four lines and their times are in the appendix of the database page; senders’ addresses stay on chain. ![The daily sketch Sleepy Pochi of 26 May 2020: soft oblong creatures piled together](https://media.cheyuwu.com/work/cryptopochi/a92790b3-sleepy-pochi-2020.webp) Sleepy Pochi, the daily sketch of 26 May 2020, OpenProcessing #905319 ![A render from January 2022: three Pochis on blue rays](https://media.cheyuwu.com/work/cryptopochi/1cb55c93-render-2022-04.webp) A render from January 2022: three of them, one in a tie ### Afterwards The Pochi contract was not written by me but by that engineer in Hong Kong; I took a detour over it, spending a great deal of time learning contracts without ever finishing one of my own. He told me this wave would never come again and that in my place he would quit his job to ride it; later I did quit. In May 2022 the Pochis jumped across the five walls of Chaos Laboratory; in 2025 they gained thirty-six voice clips, a backing track and an eye for your posture: raise your hands above your shoulders and they jump, touch one and it speaks. In September 2026, with platforms beyond fxhash no longer reliable either, we moved the 2021 build back to our own domain and re-ran all seven hundred and thirty-two, every trait matching the record on chain. Fourteen images14 ![CryptoPochi, Three on yellow-green rays](https://media.cheyuwu.com/work/cryptopochi/8f712917-still-01.webp) ![CryptoPochi, Three on pink stripes](https://media.cheyuwu.com/work/cryptopochi/77793ae4-still-02.webp) ![CryptoPochi, Three on a mint spiral](https://media.cheyuwu.com/work/cryptopochi/8f0b893a-still-03.webp) ![CryptoPochi, One in a blue tornado](https://media.cheyuwu.com/work/cryptopochi/b13b491e-still-04.webp) ![CryptoPochi, Black and white: a crown and a pearl necklace](https://media.cheyuwu.com/work/cryptopochi/140cac6a-still-06.webp) ![CryptoPochi, Three on coral squares](https://media.cheyuwu.com/work/cryptopochi/5e2fd733-still-07.webp) ![CryptoPochi, Black and white: a halo](https://media.cheyuwu.com/work/cryptopochi/d5cd6446-still-10.webp) ![CryptoPochi, Blue dots, two of them](https://media.cheyuwu.com/work/cryptopochi/ccec5b93-still-13.webp) ![CryptoPochi, Orange grid, a bow tie and an eyeshade](https://media.cheyuwu.com/work/cryptopochi/c39100c3-still-16.webp) ![CryptoPochi, Purple bubbles, three of them](https://media.cheyuwu.com/work/cryptopochi/33de2680-still-18.webp) ![CryptoPochi, Blue rays, a crowd in caps](https://media.cheyuwu.com/work/cryptopochi/d98309eb-still-19.webp) ![CryptoPochi, A 2022 render: one on green waves](https://media.cheyuwu.com/work/cryptopochi/87260cae-render-2022-01.webp) ![CryptoPochi, A 2022 render: a purple spiral](https://media.cheyuwu.com/work/cryptopochi/85ddf968-render-2022-02.webp) ![CryptoPochi, A 2022 render: an afro and a camera](https://media.cheyuwu.com/work/cryptopochi/22bf52da-render-2022-03.webp) The first eleven are outputs of the 2025 landscape build (four to six Pochis); the last three are square renders from 2022 in the composition of the 2021 build. Click to enlarge. The 2025 build, with sound (30 s)30s [video](https://media.cheyuwu.com/work/cryptopochi/ac51b7dd-film.mp4) Thirty-six voice clips at random, and a sound each time a hand touches one. It starts muted as it enters the viewport; press Sound on at the top right to listen. ## The 2022 meetup: the broadcast demonstrated [The 2022 meetup talk: Pochi and the on-chain broadcast (from 39:37)](https://www.youtube.com/embed/LCSzX2lqQF4?start=2377) The 2022 meetup talk: Pochi and the on-chain broadcast (from 39:37)[Open in a new tab](https://www.youtube.com/embed/LCSzX2lqQF4?start=2377) The journey10 1. 01 ### 26 May 2020 The daily sketch Sleepy Pochi: a Matter.js soft-body test 2. 02 ### 2021 Strange Robots is copied; the Art Blocks queue is out of reach, so an own contract it is 3. 03 ### 5 September 2021 Contract deployed; early mint for Sea Ham holders at 15:00 UTC, 278 in the first hour 4. 04 ### 6 September 2021 00:56, the first line, Hello World!, goes on chain; 15:00, the public Dutch auction 5. 05 ### 7 September 2021 00:47, the 732nd; 02:27, the team sets the sale time to the far future and closes 6. 06 ### 11 September 2021 Broadcast fee set: free for holders, 0.03 ETH for others 7. 07 ### April to May 2022 The broadcast demonstrated at a meetup; the Digital Creatures section of Chaos Laboratory 8. 08 ### 21 June 2023 The last on-chain action: Rugged 9. 09 ### June 2025 The landscape build: thirty-six voice clips, a backing track, pose tracking 10. 10 ### 20 September 2026 The 2021 minting build self-hosted; all 732 re-run and the database published ## Original work record Original text: the 2021 cryptopochi.com home page, What are Pochis? (kept verbatim); editions, contract and mechanism were checked against the chain in September 2026, see above. CryptoPochis are mysterious creatures that capture different emotions in your daily life. Their faces speak for themselves. They simply lie on the ground and play all day. We catch and wrap them as NFTs for you to play with. Records and links11 - [LiveThe 2021 minting build: open any one2026-09-20pochi.art.cheyuwu.com](https://pochi.art.cheyuwu.com/token/) - [LiveThe 2025 landscape build: sound and pose tracking2025-06-25pochi.art.cheyuwu.com](https://pochi.art.cheyuwu.com/) - [DatabaseThe 732 database: hashes, traits, palettes and the ninety-four lines2026-09-20cheyuwu.com](https://cheyuwu.com/nft/cryptopochi/) - [Daily sketchThe origin: Sleepy Pochi2020-05-26cheyuwu.com](https://cheyuwu.com/sketch/905319/) - [SiteThe original site: Hey, they are Pochis. They are you and me.2021-09-05cryptopochi.com](https://cryptopochi.com/) - [On chainThe contract 0x1111…f7932021-09-05Etherscan](https://etherscan.io/address/0x11111111384122718f7a44d48290bb70a3a9f793) - [PlatformThe collection2021-09-05OpenSea](https://opensea.io/collection/cryptopochi) - [**CREATIVECODING.IN**Our siteJust watching relaxes you: healing generative art from the pandemic2021-05-20](https://creativecoding.in/2021/05/20/%E7%9C%8B%E8%91%97%E7%9C%8B%E8%91%97%E5%B0%B1%E6%94%BE%E9%AC%86%E4%BA%86%EF%BC%81%E7%96%AB%E6%83%85%E6%9C%9F%E9%96%93%E7%9A%84%E7%99%82%E7%99%92%E7%94%9F%E6%88%90%E8%97%9D%E8%A1%93%E4%BD%9C%E5%93%81/) - [FilmThe Pochi segment of the meetup talk: the broadcast demonstrated on OpenSea (from 39:37)2022-04-19YouTube・哲宇](https://www.youtube.com/watch?v=LCSzX2lqQF4&t=2377s) - [BeforeFamily from the same year: Sea Ham and Strange Robots2021-03-28cheyuwu.com](https://cheyuwu.com/work/strange-robot/) - [ShownChaos Laboratory: Pochis jumping across five walls2022-05-20cheyuwu.com](https://cheyuwu.com/work/chaos-lab/) Notes are live things and our own pages, tags the outside platforms and records; every one opens. ## Credits Artist, generator Che-Yu Wu (p5.js 1.0, Matter.js 0.14) Contract and front end frenfish (GitHub; the Solidity 0.8.4 contract, the metadata service and the mint page) Community Hamily: early mint and airdrops for Sea Ham holders, Discord and Twitter @CryptoPochi The 2025 landscape build Voice clips and pose tracking (ml5 bodyPose) added; MONOLAB Self-hosting and database, 2026 The 2021 minting build revived with five small patches; all 732 re-run, every trait matching the on-chain metadata Lineage: grown from Sleepy Pochi ## Context & sources - [The 2021 minting build, self-hosted, draggable](https://pochi.art.cheyuwu.com/token/) - [The 2025 landscape build (sound and pose tracking)](https://pochi.art.cheyuwu.com/) - [The original site, cryptopochi.com](https://cryptopochi.com/) - [The contract on Etherscan](https://etherscan.io/address/0x11111111384122718f7a44d48290bb70a3a9f793) - [The collection on OpenSea](https://opensea.io/collection/cryptopochi) - [The Pochi segment of the 2022 meetup talk (YouTube, from 39:37)](https://www.youtube.com/watch?v=LCSzX2lqQF4&t=2377s) Exhibitions, research & collaborations [Contact the artist](https://cheyuwu.com/contact?work=CryptoPochi&from=/work/cryptopochi/) ## Continue through the work ![Strange Robots → The Hamily](https://cheyuwu.com/static/img/strange-robot/cover-2026-09.jpg) 2021 ### Strange Robots → The Hamily [https://cheyuwu.com/work/strange-robot](https://cheyuwu.com/work/strange-robot) ![Soul Fish](https://cheyuwu.com/static/img/soulfish/cover-2026-09.jpg) 2022 ### Soul Fish [https://cheyuwu.com/work/soulfish](https://cheyuwu.com/work/soulfish) ![Chaos Laboratory](https://cheyuwu.com/static/img/chaos-lab/cover-2026-09.jpg) 2022 ### Chaos Laboratory [https://cheyuwu.com/work/chaos-lab](https://cheyuwu.com/work/chaos-lab) ![MEMEGINEERING](https://cheyuwu.com/static/img/mirror/4e2bce1ee344.jpg) 2023 ### MEMEGINEERING [https://cheyuwu.com/work/memegineering](https://cheyuwu.com/work/memegineering) 1 / 0