Barz runs three market durations.Daily markets are the core product. Two artists, 24 hours, resolved from the next day’s Spotify US Daily chart. These are the highest frequency and most actively traded.Weekly markets run for 7 days and track broader charting trends. Will an artist hold a Top 5 position across the full week?Monthly markets cover longer narratives. Album release performance, comeback predictions, cultural events tied to specific artists.
All markets are binary. Two outcomes. You buy shares in the one you think wins. Head-to-head matchups are the primary format for daily markets. YES/NO format is used for weekly and monthly markets where the question has a single subject.
Every market moves through four phases:Active — trading is open. Buy shares on either side.Halted — trading closes before resolution. No new trades, but you still hold your position.Resolved — the oracle has determined the winner. Payouts are available.Refunded — in rare cases, a market may be voided and all users refunded at cost basis.
Barz uses a constant product market maker (CPMM). Both sides of the market start with equal virtual reserves. As users buy shares on one side, that side’s price increases and the other side decreases.The bonding curve ensures there is always liquidity. You can always buy or sell at any time while the market is active. No order book, no waiting for a counterparty.
Share prices range from $0.01 to $0.99. The price reflects the implied probability of that outcome winning.A share priced at $0.70 means the market believes that outcome has a 70% chance of winning. If the outcome wins, each share pays out proportionally from the vault. If it loses, shares are worthless.
If you believe an outcome has a 60% chance of winning but shares are trading at $0.40, you’ve found a mispricing. The bonding curve doesn’t know anything about music. It only reflects what other traders have bought. Your edge comes from knowing the charts better than the crowd.
All daily markets resolve from Spotify US Daily chart data verified through Kworb (kworb.net). Kworb aggregates official Spotify data and is the standard reference used across the music industry for chart tracking.
When a market’s deadline passes, the oracle pulls the relevant chart data from Kworb. The data includes chart positions and stream counts for both artists in the matchup. The artist with the higher chart position (or more streams, depending on the market question) wins.
Every resolution stores an IPFS hash on-chain alongside the result. This hash links to a snapshot of the chart data used to make the resolution decision. Anyone can verify the result independently by checking the IPFS evidence against the live Kworb data.
Resolutions are based on publicly verifiable data. If the Kworb data at the time of resolution matches the on-chain IPFS evidence, the result stands. The oracle does not make subjective calls.
Every trade on Barz carries a 2% fee applied to the swap amount.1.5% goes to the Barz treasury, funding platform operations and development.0.5% goes to the resolution fund, covering oracle transaction costs and on-chain storage for IPFS evidence.
Fees are taken at the time of the swap, not at resolution. When you buy $10 worth of shares, $0.20 goes to fees and $9.80 goes into the market vault. This is reflected in the share amount you receive.
