According to AiCoin data, on October 21, Eastern Time, the U.S. Bitcoin spot ETF recorded net inflows for the third consecutive trading day, with total net inflows of approximately $528 million that day. Among these, BlackRock's IBIT saw a single-day net inflow of about $235 million, with historical cumulative net inflows reaching approximately $66.498 billion, indicating a significant recovery in compliance institutions' sentiment toward Bitcoin allocations. In contrast, according to a single source, the U.S. Ethereum spot ETF recorded net inflows of about $14.9 million on the same day, which is substantially smaller than the Bitcoin spot ETF. Because U.S. Bitcoin spot ETF positions hold real Bitcoin on-chain through custodial institutions, this round of net subscriptions corresponds to more chips being locked in mid- to long-term positions. Meanwhile, the market narrative is not solely focused on Bitcoin: in an interview published on October 22, Gemini co-founders Cameron and Tyler Winklevoss openly supported Zcash, referring to it as "the Bitcoin of crypto,” believing that it is better suited for everyday payments and private trading scenarios, and expressed their personal judgment that the price of ZEC has the potential to rise to $5,000; on the other hand, Circle CEO Jeremy Allaire emphasized in a recent interview that compared to the prices of digital commodities like Bitcoin, he is more focused on non-speculative digital dollar products aimed at payments, trading, lending, and investments, and mentioned that under the influence of AI intelligent entities, the digital dollar will play a key role in payments between machines and the circulation of "machine-native value." In the same timeframe, Bitcoin ETFs are attracting capital while privacy payment narratives and digital dollar visions are running parallel, outlining the current intertwined landscape of multiple storylines in the crypto market.
U.S. Bitcoin ETF Attracts Funds for Three Consecutive Days: $528 Million Entered
According to AiCoin data, on October 21, the U.S. Bitcoin spot ETF saw total net inflows of approximately $528 million, with multiple data sources providing similar figures; another single source estimated $524.8 million, indicating slight differences in value but all pointing to significant net subscription volumes. In terms of product structure, BlackRock's IBIT contributed approximately $235 million in net inflows that day, accounting for nearly half of the total net inflows, with its historical cumulative net inflows reaching around $66.498 billion, further solidifying its leading position; according to single-source data, FBTC, BITB, ARKB, and EZBC recorded net inflows of approximately $212.7 million, $19.2 million, $9.8 million, and $7.3 million respectively, collectively driving the U.S. Bitcoin spot ETF to achieve net inflows for the third consecutive trading day.
From an indicative standpoint, three consecutive days of net inflows at least indicate that at the current price level, compliance channels' institutions and qualified investors still have the willingness to increase their exposure to Bitcoin, suggesting a warming marginal sentiment. However, as the specific scale for the previous two days has not been disclosed and the sample period remains relatively short, it is difficult to conclude definitively that a new mid- to long-term trend has been established. It is worth noting that these types of spot ETF holdings are managed by custodial institutions holding real Bitcoin on-chain, and the new shares correspond to new custodial address holdings, meaning that some chips will predominantly be held long-term in the short to mid-term. In contrast, the U.S. Ethereum spot ETF's net inflow of about $14.9 million (according to a single source) on the same day highlights a significant difference in the level of attraction these two asset classes currently hold on the compliance funds side, with Bitcoin still being the preferred asset for mainstream institutions allocating crypto assets via spot ETFs.
IBIT Takes the Lead: Which Bitcoin ETF is Wall Street Betting On?
According to AiCoin data, among the approximately $528 million total net inflows to Bitcoin spot ETFs on October 21, BlackRock's IBIT contributed around $235 million, nearing half of the day's net inflow, with its historical cumulative net inflows reaching approximately $66.498 billion, which places it at an absolute lead among similar products. In comparison, other products like FBTC saw about $212.7 million in net inflows that day, while BITB, ARKB, and EZBC also maintained positive inflows, but their overall scale was lower than that of IBIT. This structure means that IBIT has become the most central tool for Wall Street institutions allocating to Bitcoin spot ETFs in the current main channel of compliant funds, and its share and flow advantages further consolidate BlackRock's voice in this space.
From an on-chain perspective, the spot Bitcoin ETF holds real Bitcoin concentrated by compliance custodial institutions, and as a leading product, the custodial address holdings corresponding to IBIT's new shares are rapidly accumulating. The custodial addresses are primarily held long-term, causing a significant portion of Bitcoin to gradually concentrate from decentralized self-custody wallets to a few large custodial entities, resulting in reduced freely movable chips in the short to mid-term. As products like IBIT continue to scale up, the structure of Bitcoin chips is showing characteristics of "compliance custodial concentration and relatively tightened on-chain circulation," and this change is reshaping Bitcoin’s on-chain holding distribution and long-term supply landscape.
Public Bitcoin versus Encrypted Bitcoin: Zcash is At the Fore
As Bitcoin spot ETFs lock more chips into public, auditable custodial addresses, the Winklevoss brothers in an interview published on October 22, straightforwardly placed Bitcoin and Zcash at the same table for "dividing work." They emphasized that the Bitcoin blockchain is essentially a completely public ledger, where any address and transaction paths can be traced and audited over the long term; this design is very suitable for macro-level value storage and institutional-grade allocation but does not meet user demands in "extreme privacy" scenarios. Relatively speaking, they regard Zcash as more of a tool for daily payments and private trading, narratively describing it as "the Bitcoin of crypto" to point out its differentiated position in protecting transaction details and concealing account relationships.
In the same interview, Cameron Winklevoss further suggested that the price of ZEC "has the potential to rise to $5,000," but this expression was clarified as a personal subjective expectation rather than a conclusion based on a consensus pricing model, much less indicative of industry-level predictive standards. In other words, Bitcoin is following a path of "compliance, transparency, and auditability" through spot ETFs, with the on-chain holding structure gradually concentrating in regulated custodial institutions, while Zcash represents a different, privacy-protecting technology route, emphasizing "invisible" trading freedom, yet also needing to continuously face the uncertainties of compliance and regulatory boundaries in the future.
Circle Bets on Non-Speculative Digital Dollar in the AI Era
In contrast to the previous discussions surrounding the prices and holdings of Bitcoin spot ETFs, Circle CEO Jeremy Allaire in a recent public interview deliberately downplayed the focus on price trends of Bitcoin and other "digital commodities." According to his statements, Circle's strategic focus is not on betting on the market performance of any specific asset class but rather on building digital dollar products aimed at payments, trading, lending, and investment scenarios, and emphasizing that these products should be as free from pure speculative attributes as possible, serving the needs of daily financial activities and infrastructure.
In his view, what will truly amplify the value of these digital dollar products is the forthcoming large-scale emergence of AI intelligent entities: when machines begin initiating payments, settlements, and asset allocations continuously in the background, they require a "machine-native value" carrier, and the digital dollar will become the universal medium for automated settlements between these intelligent entities. Thus, within the coordinates of "on-chain assets + new narratives," Bitcoin's emphasis through spot ETFs is on compliance and auditability for asset allocation, privacy coins like Zcash emphasize "invisible" trading freedom, while the digital dollar route depicted by Allaire aims to bind the future AI era's payment, trading, and lending infrastructure together with a non-speculative digital dollar, forming a distinctly different industry development path from the first two.
Three Narratives Running Parallel: On-Chain Chips and Regulation as Key Variables
Within the coordinates of these three parallel narratives, one end is the Bitcoin spot ETF that has begun to land: according to AiCoin data, on October 21, the U.S. Bitcoin spot ETF achieved net inflows for the third consecutive day, with net inflows of approximately $528 million that day, while the specific scale for the previous two days was only confirmed as "net inflow" and hasn’t been disclosed; the Bitcoin behind these products is managed by compliance custodial institutions, with on-chain assets increasingly concentrated in a few custodial addresses, making some chips difficult to move frequently in the short to mid-term, which may reshape Bitcoin's on-chain chip distribution and marketable supply structure in the mid to long term. On the other end is the privacy narrative represented by Zcash, historical experiences show that this space has faced regulatory pressure multiple times due to compliance and anti-money laundering requirements in different jurisdictions, and future regulatory orientation remains a source of uncertainty. The Winklevoss brothers describing Zcash as "the Bitcoin of crypto" and suggesting that ZEC has the potential to rise to $5,000 fundamentally reflects personal judgment rather than industry consensus—investors need to distinguish such subjective expectations from verifiable prices and on-chain data. The third clue is the combination of digital dollars and AI: Circle CEO Jeremy Allaire publicly stated a greater focus on non-speculative digital dollar products aimed at payments, trading, lending, and investing, and anticipated that as AI intelligent entities develop, the role of digital dollars in machine payments and settlements will strengthen, but this direction is still in the early exploratory stage, with no clear consensus on the specific landing rhythm and scale. Overall, whether the net inflows to Bitcoin spot ETFs can be sustained, the increasing degree of concentration of custodial addresses, potential changes in regulatory attitudes towards the privacy space, and the actual use demand for digital dollars in AI-related applications will be key variables affecting the future direction of these three narratives. When interpreting industry leaders' comments, it is essential to anchor on-chain and market facts as per AiCoin data and clearly distinguish between data and expectations to avoid misreading views like ZEC reaching $5,000 as "determined conclusions."
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