Bitcoin’s remarkable surge past $13,400 on October 29, 2020, wasn’t just being driven by institutional buyers and retail FOMO. The rally, which pushed the world’s largest cryptocurrency to its highest level in nearly three years, was getting a surprising boost from an unexpected corner of the market — Ethereum’s booming decentralized finance ecosystem.
TL;DR
- 0.8% of all Bitcoin in circulation (148,000 BTC) is now tokenized on Ethereum
- Wrapped Bitcoin (WBTC) holdings doubled from 74,000 to 148,000 BTC in just 50 days
- Bitcoin traded at $13,437, up 1.3% on the day according to Kraken data
- Yield farming in DeFi protocols drove massive demand for tokenized BTC
- Concerns raised about Bitcoin blockchain security as value shifts to Ethereum
The Wrapped Bitcoin Phenomenon
The numbers tell a striking story. Ethereum Foundation researcher Justin Drake highlighted on October 28 that 148,000 BTC — representing 0.8% of all Bitcoin in circulation — was now based on Ethereum in the form of synthetic assets like Wrapped Bitcoin (WBTC), tBTC, and others. What makes this figure particularly remarkable is the speed of growth. Just 50 days prior, that number stood at 74,000 BTC. And 23 days before that, only 37,000 BTC. The growth has been exponential, with the total doubling every couple of months.
Wrapped Bitcoin, the dominant player in this space, allows users to lock up their BTC and receive an equivalent ERC-20 token on Ethereum. This tokenized Bitcoin can then be used across the sprawling DeFi ecosystem — as collateral for loans, in liquidity pools, or for yield farming strategies that have become the hottest trend in crypto throughout 2020.
DeFi Yield Farming Drives the Surge
The primary catalyst behind this explosive growth has been the yield farming craze that took over DeFi during the summer and fall of 2020. Protocols began offering eye-popping annual percentage yields to BTC holders willing to deposit their Wrapped Bitcoin into various liquidity pools and lending platforms. For Bitcoin holders accustomed to holding an asset that generates no passive income, the opportunity to earn significant yields was irresistible.
Prominent crypto researcher Hasu captured the dynamic perfectly, noting that “Wrapped bitcoin follows the yield opportunities. The yields we saw for BTC in DeFi have already collapsed a lot, because they were fueled by the retail buyers of tokens like CRV, COMP, UNI, and the countless food tokens. And those buyers are running out.”
Genesis Trading, one of the largest institutional crypto desks, confirmed this trend in their quarterly report, noting that “a major theme in Q2 was the demand for yield on crypto assets” and that they had seen “a massive pickup in interest this quarter in many forms.”
Security Concerns Emerge
Not everyone is celebrating this migration. Nic Carter, co-founder of Coin Metrics and a respected Bitcoin researcher, raised alarms about the long-term implications. In comments reported by Bloomberg, Carter explained that the increasing amount of Bitcoin commerce taking place on Ethereum rather than on Bitcoin’s own blockchain diverts transaction fees away from Bitcoin miners.
This could reduce the economic incentive for miners to keep their machines running, potentially weakening the network’s security over time. While Bitcoin’s mining difficulty adjustments ensure block times remain stable, a sustained decrease in miner revenue could make the network more vulnerable to attacks from well-resourced malicious actors.
Messari founder Ryan Selkis put the scale of the trend in perspective, noting that nearly five percent of all “floating” Bitcoin in circulation is now made up of synthetic assets — a figure that has been climbing rapidly as DeFi continues to attract capital.
The PayPal Factor
The wrapped Bitcoin narrative took on an additional dimension amid rumors that PayPal was in talks to acquire BitGo, the custodian behind Wrapped Bitcoin. While neither company confirmed the reports, industry observers speculated that such an acquisition could bring significant changes to the WBTC ecosystem, potentially opening the door to even broader institutional adoption of tokenized Bitcoin on Ethereum.
Market Context
On October 29, Bitcoin was trading at approximately $13,437 according to CoinMarketCap data, with a market capitalization of roughly $249 billion. The 24-hour trading volume exceeded $56 billion, reflecting intense market activity. Ethereum traded at $386.73 with a market cap of approximately $43.8 billion. Kraken reported total spot trading volume of $274.1 million on the day, slightly above the weekly average of $245.8 million.
The broader crypto market showed mixed signals. While Bitcoin continued its upward trajectory, many DeFi tokens were under pressure — a sign that capital was rotating from DeFi back into Bitcoin as the flagship cryptocurrency’s rally captured the market’s attention.
Why This Matters
The migration of nearly 1% of all Bitcoin onto Ethereum represents a fundamental shift in how the two largest cryptocurrencies interact. For years, Bitcoin and Ethereum were seen as competitors. Now, they are becoming increasingly intertwined. Whether this convergence ultimately strengthens or weakens the crypto ecosystem remains one of the most important questions facing the industry.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Always do your own research before making any investment decisions.
148k BTC on Ethereum, doubled in 50 days. that was peak defi mania. wonder how much of it is still there
most of it. WBTC is still the dominant wrapped asset. the yield farming use case just shifted from harvest to aave
most of it got rinsed in the 2022 defi implosions. WBTC supply crashed from peak and never fully recovered
swap the defi implosions were the cleanup mechanism. celsius, voyager, all of them unwinding leveraged WBTC positions. the supply crash wasnt organic demand disappearing, it was forced deleveraging
Claire D. forced deleveraging is exactly right. the WBTC supply chart basically mirrors the Celsius collapse timeline. that wasnt a demand shift it was a margin call
WBTC supply peaked around 285k BTC in 2022 and crashed to under 100k after the DeFi implosions. most of those wrapped coins were leverage, not real demand
285k to under 100k is a 65% wipeout in WBTC supply. most of that wrapped BTC was leverage dressed up as real demand
yield farming at any cost was the 2020 ethos. nobody asked who held the keys as long as the APY was above 100%
the APY was basically printed from token emissions. everyone knew it was unsustainable but nobody wanted to be the one to leave the party early
148k BTC wrapped on eth at peak and nobody questioned who actually held the keys. bitGo was a single point of failure for a billion dollars in BTC. absolute insanity
0.8% of all BTC on a rival chain. security purists were screaming about counterparty risk and nobody listened until FTX
counterparty risk was always the elephant in the room. BitGo custody helped WBTC but the model still depends on a single custodian
BitGo being the single custodian for WBTC was always a risk. one regulated entity controlling 148k BTC wrapped on ETH. what could go wrong
single custodian for 148k BTC and people complained about self-custody being too complicated. the irony writes itself
custody_paradox self custody being too complicated was the excuse then and its the excuse now. nothing changed except the wrapper
yield farming drove that WBTC explosion. people were wrapping BTC to farm on curve and harvest without caring about custody risk. crazy in retrospect
148k BTC tokenized on Ethereum at peak was about 1% of supply. now we have spot ETFs holding way more than that and nobody talks about custody risk anymore. same problem different wrapper
Marek H. ETFs holding more BTC than WBTC peak doesnt mean custody risk disappeared. blackrock is just the new bitgo with better marketing