BlockChord

BlockChord is a collaborative music platform where every note, loop, and song lives on the XRP Ledger.

Demo Video

Project Information

At a Glance

BlockChord is a collaborative music platform where every note, loop, and song lives on the XRP Ledger.

Description

BlockChord turns the XRPL blockchain into a musical instrument. Instead of sending payments, you send melodies. Instead of reading balances, you listen to the ledger. Every interaction is a real XRPL transaction carrying musical data in its memos.

BlockChord Piano
BlockBox, A loop station with 40 samples
Composer, Write a song as a sequence of notes, broadcast it to the ledger, and hear it play back

Technical Details

How it works

User Action XRPL Testnet Audio Output

Press DO for 2 beats (silence) Payment tx submitted MemoType: BLOCKCHORD MemoData: DO:2

                  4s        Ledger validates tx

                      Transaction stream delivers    DO plays for 2 beats
                             the tx back to the browser      via Tone.js synth

No server. No database. No WebSocket relay. The XRPL ledger IS the pub,sub layer.

Source code Demo

Team

Eli Benbaruk

Séchon Armand

Hackathon

HACK THE BLOCK 2026 Paris Blockchain Week XRPL Hackathon

Duration

Apr 11, 6:30 AM - Apr 12, 6:00 PM UTC

View Hackathon Details