Toucan Protocol · interactive mechanism simulation

Verra credits are retired off-chain → minted as BatchNFTs → fractionalized into TCO2 → pooled into fungible BCT → traded and retired on-chain. Cheap "zombie" credits flow in fastest; trigger Verra's 2022 ban to see the bridge freeze.
Credit holders Verra VCUs Verra Registry retire & attest BatchNFT mint 0 batches TCO2 tokens 0 tonnes BCT Pool avg quality: 70% AMM (SushiSwap) BCT $1.00 Retirement 🔥 0 tonnes retired
Tonnes bridged
0
BCT price
$1.00
Pool avg quality
70%
Tonnes retired
0
Parameters — edit me
1.5/s
30%
2.0/s
0.6/s
Controls
BANNED: Verra halts tokenization, bridge closes, credits stranded.

Illustrative simulation. Mirrors the researched Toucan mechanism (retire-and-mint bridge, BatchNFT fractionalization into TCO2, quality-gated BCT pools, AMM price discovery, on-chain retirement) with randomized timing and simplified quality math — not live onchain data. The "Trigger Verra ban" button models the May 2022 announcement that halted tokenization of registry credits and stranded low-quality supply already in the pool. Part of The Onchain Experiment Atlas.