Paste a transaction.
Hear the chain.
Sounds are being inscribed directly into Solana token metadata. Paste a token CA or a transaction link and Soundcoin finds the audio and plays it.
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Resolution log
Your soundboard
How it works
A sound gets inscribed
Someone creates a Token-2022 mint whose metadata uri is a data:application/json with a sound field: a base64 WAV. Since Solana transaction v1 (4 096 bytes, live 15 Sept 2026) a whole clip fits in one transaction. No IPFS, no server, no CDN.
You paste anything
The transaction, the mint, the Solscan or fomo.family page, or a pump.fun coin whose description points to the sound mint. Soundcoin reads the account straight from an RPC in your browser.
It plays
The data URI is handed to an <audio> element. Copy it, download the .wav, or share a link that replays it. Nothing is uploaded anywhere: the audio lives on-chain forever.
Inscribe your own sound
The repo ships a CLI. Convert any clip to a tiny 8-bit WAV, then push it on-chain in a single v1 transaction (≈ 0.02 SOL of rent).
cd tools && npm install
node make-sound.mjs --in myclip.wav --rate 6000 --out ../assets/myclip.wav
node inscribe-sound.mjs --wav ../assets/myclip.wav --name "my sound" --symbol SNDTip: 6 000 Hz × 8-bit ≈ 0.38 s per transaction. Go lower (4 000 Hz) for longer, muddier clips.
$SOUND — the token of the platform
Soundcoin is the place where on-chain sounds get played. $SOUND is its token: one ticker for the platform, the soundboard and everything we ship next.