{"rewrite":{"id":"r_890636a2e95f1ea2214d989f","clusterId":"c_9eb22b46f913d3fe08869d97","slug":"shachihata-turns-crowdfunding-to-vtuber-penlights-that-react-to-stream-audio","model":"deepseek-v4-1-flash","headline":"Shachihata Turns Crowdfunding To VTuber Penlights That React To Stream Audio","summary":"Shachihata, the company known for hanko stamps, opened a CAMPFIRE crowdfunding campaign on Tuesday, October 20 for penlights and acrylic stands that light up in response to VTuber songs using its Oto no Shirushi audio watermarking technology. The project covers 26 VTubers and runs until Monday, November 30. Goods read inaudible staging data embedded in the music, so they respond during livestreams and archived videos at home without Bluetooth or other wireless control.","whyItMatters":"Shachihata is pushing a stamp-technology watermark into fan goods that work off a stream's audio, which gives at-home viewers a live-style light response without a Bluetooth connection.","webCardHtml":"\u003cp\u003eOto no Shirushi embeds staging instructions in music as an inaudible audio watermark. A compatible penlight or acrylic stand picks the signal up from whatever device is playing the song, whether a smartphone, PC or speaker. The goods light in sync with the track, so the same behavior works at a venue, on a YouTube livestream, or in a later archive.\u003c/p\u003e\u003cp\u003eShachihata lists reward tiers from a 1,100-yen support plan to a 14,300-yen full set of penlight and stand, with a 55,000-yen plan to put the technology into a VTuber\u0026#39;s own songs. Rewards are scheduled to ship from December 2026 into around January 2027.\u003c/p\u003e","blueskyPost":"Shachihata's Oto no Shirushi penlights work without Bluetooth or wireless control, reading watermark data in the music itself. The hanko maker is selling sync as a feature, not a connection.","twitterPost":"Shachihata's penlights sync to VTuber streams via inaudible watermark data, no Bluetooth needed. Sync without pairing is the product.","threadsPost":"Shachihata is betting that VTuber fans want a penlight that lights up on its own, no Bluetooth pairing, no app. The Oto no Shirushi tech reads staging data embedded in the music, so the goods react to archived videos too. The hanko maker is selling sync itself as the feature.","newsletterBlurb":"Shachihata is crowdfunding penlights and acrylic stands that light up in response to VTuber songs through its Oto no Shirushi audio watermarking, with the campaign covering 26 VTubers and running to November 30. Because the goods react to sound rather than a wireless signal, the effects work on livestreams and archived videos as well as at venues. Reward tiers range from 1,100 yen to 55,000 yen, with shipping from December 2026 into around January 2027.","attributionJson":"[{\"source\":\"KAI-YOU\",\"url\":\"https://kai-you.net/article/96793\",\"title\":\"Shachihata's Hanko Brand Launches Crowdfunding for VTuber \\\"Sound-Linked Goods\\\" - Penlights Light Up in Response to Stream Audio!\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4654,"outputTokens":665,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1792754543,"createdAt":"2026-10-23T11:18:55.000Z","publishedAt":"2026-10-23T11:21:08.000Z","updatedAt":"2026-10-23T11:21:08.000Z"},"cluster":{"id":"c_9eb22b46f913d3fe08869d97","canonicalTitle":"判子のシヤチハタ、VTuber向け“音連動グッズ”をクラファン　配信の音に反応してペンライトが光る！","representativeArticleId":"a_0c405b75e3cbb22dc7ac5081","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[\"Shachihata\"],\"people\":[],\"type\":\"announcement\",\"domain\":\"vtuber\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-23T10:00:00.000Z","lastSeenAt":"2026-10-23T10:00:00.000Z","updatedAt":"2026-10-23T11:21:06.000Z"},"attribution":[{"source":"KAI-YOU","url":"https://kai-you.net/article/96793","title":"判子のシヤチハタ、VTuber向け“音連動グッズ”をクラファン　配信の音に反応してペンライトが光る！"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":["Shachihata"],"people":[],"type":"announcement","domain":"vtuber","is_roundup":false},"keyFacts":null}