Bitcoin Mining Reward Structure Reconfiguration: Analysis of Spider Pool NAT Distribution Mechanism and Incentive Model

Cryptocurrency mining is standing at a silent yet profound structural turning point. On April 27, 2026, Spider Pool announced the official launch of the NAT distribution mechanism, enabling Bitcoin miners to receive dual rewards of BTC and NAT within the same block. This is not a simple feature iteration but a fundamental expansion of Bitcoin’s mining economic model at the block incentive level. When the boundaries of block rewards are redefined, the profit structure of the mining ecosystem and the supporting logic of network security budgets will enter a phase of recalibration.

The Dual Reward Mechanism for the Same Block Officially Implements

Spider Pool launched NAT official distribution on April 27, 2025, and has been operating for a full year at the time of writing. The core of this mechanism is that miners can produce Bitcoin blocks approximately every 10 minutes and simultaneously earn NAT tokens without any modifications to existing hardware infrastructure. This mechanism is built on the DMT-NAT protocol, with NAT as the native chain token under the digital material theory framework, sharing the same public chain, computational power system, block production cycle, and receiving address as Bitcoin.

According to public data, the current NAT output per block is about 386 million tokens, worth approximately $90. At launch, NAT’s market cap once surpassed ordi, becoming one of the most widely watched native assets within the Bitcoin ecosystem. As the fourth-largest global major mining pool, Spider Pool’s official integration of NAT distribution indicates that this mechanism has moved from protocol conceptualization to large-scale production environment validation.

From Protocol Design to Mining Ecosystem Integration

Understanding the full logic of this event requires tracing the origin of the NAT protocol and Spider Pool’s integration path.

NAT is not a temporary miner incentive scheme. The design philosophy of the DMT-NAT protocol is rooted in the digital material theory, advocating for building a native asset layer on top of the Bitcoin mainnet rather than relying on sidechains or second-layer networks. Its core feature is “same root, same origin”: NAT tokens are strictly bound to Bitcoin blocks, sharing the same blockchain, same hash power system, same block output cycle, and same receiving address, without requiring miners to invest additional hash power or altering Bitcoin’s consensus mechanism. This design distinguishes NAT in asset attributes from early Bitcoin ecosystem colored coins or BRC-20 token standards.

Timeline-wise, the open-source code and community discussions of the NAT protocol date back to the second half of 2024. In early 2025, Spider Pool began internal testing of same-block distribution technology, and after several months of grayscale operation, officially launched in April 2025. By April 2026, the mechanism had been stable for a full year, during which it experienced fluctuations in Bitcoin’s total network hash rate, price cycles, and practical tests of miner revenue structures.

Data and Structural Analysis: The Economics of the Dual Reward Profile

To evaluate the substantive impact of NAT, it is necessary to quantify and compare it within the miner revenue structure.

Using current data, the Bitcoin single-block reward is 3.125 BTC. As of April 27, 2026, with Bitcoin priced at $77,810.3, the reward per block is worth approximately $243,157. NAT’s reward per block is about $90, accounting for roughly 0.037% of the BTC reward. In absolute terms, this proportion is negligible.

However, this perspective overlooks a key variable: the dynamic relationship between NAT token price and miner costs. Spider Pool has set a tiered value path in the mechanism design—when NAT’s per-block reward value reaches $50,000, it can effectively share operational costs; at $500,000, it will substantially address the long-term sustainability of the Bitcoin network security budget. These thresholds correspond to NAT market caps of approximately $50 billion and $500 billion, respectively.

From a structural perspective, the essence of the NAT mechanism is to build a second revenue curve for miners outside Bitcoin’s established deflationary issuance curve. The rule of Bitcoin halving every 210,000 blocks remains unchanged, but NAT rewards, designed to decrease with hash difficulty and block height, form an independent decay trajectory. When these two revenue curves are superimposed, the total income expectation for miners changes structurally—especially in the future when Bitcoin rewards approach zero, whether the second curve can grow into a core income source will determine the entire network’s security budget logic.

Public Opinion Analysis: Consensus, Disputes, and Unresolved Issues

The mining community’s reactions to the NAT mechanism show clear stratification.

Supporters focus on a logical chain: the long-term sustainability of Bitcoin’s network security budget is a repeatedly discussed structural issue. As block rewards continue to halve, miner income will increasingly rely on transaction fees, which are far more volatile than block rewards. NAT offers an incremental solution that does not depend on modifications to the Bitcoin protocol layer—it neither requires hard forks nor changes to Bitcoin’s monetary policy but opens a new revenue source for miners at the application layer. This stance is more widely accepted among large miners, as their fixed cost base is larger and their need for income diversification is more urgent.

Critics focus on the value capture logic of NAT tokens. The core question is: where does NAT’s value come from? Critics point out that NAT currently lacks clear consumption scenarios or value anchors, and its price support is more driven by market expectations than actual utility. If miners continue to sell NAT on secondary markets to cover operational costs, the token’s price may face persistent selling pressure. Additionally, some observers worry that if a single mining pool deploys such additional reward mechanisms exclusively, it could lead to further hash power centralization, sparking a new round of discussions on mining centralization.

A neutral perspective pays attention to a deeper issue: whether the NAT mechanism will evolve into a form of “tax,” indirectly increasing the opportunity cost for non-Spider pools. If NAT’s market cap continues to grow and other pools do not adopt similar protocols, miners not participating in the distribution network effectively forgo this incremental revenue. This does not constitute a forced migration at the hash power level but does create a factual economic incentive tilt.

Industry Impact Analysis: Mining, Network Security, and Asset Narratives’ Triple Reconfiguration

The implementation of the NAT mechanism impacts the industry along three main lines.

First, the miner revenue structure shifts from a single curve to a double curve. Under the traditional model, miner income consists of block rewards and transaction fees, sharing a single value benchmark of the Bitcoin network. NAT introduces a second revenue curve with an independent value benchmark from Bitcoin’s price. This means the risk exposure of miner income is theoretically diversified—if Bitcoin’s price weakens, NAT’s price may move independently, and vice versa. This non-complete correlation has practical significance for the financial planning of mining operators.

Second, the framework for discussions on network security budgets shifts. For a long time, debates on Bitcoin’s security budget focused on two solutions: either relying on the natural maturation of the fee market or maintaining inflation subsidies through protocol modifications. NAT provides a third path—introducing additional incentives at the application layer without any protocol layer changes. If validated, this path could alleviate ongoing concerns about whether the fee market can support future hash power levels.

Third, Bitcoin asset narratives enter a new segmentation framework. NAT places the concept of “native chain coin” in the spotlight. Unlike inscriptions or rune protocols that require additional minting processes, NAT’s issuance is fully integrated into Bitcoin’s block production process. This “frictionless issuance” feature positions it uniquely in asset narratives—it is neither a substitute for Bitcoin protocol nor a resource-consuming network asset but a byproduct of block production activity.

Multi-Scenario Evolution Projections: Three Possible Development Paths

Based on currently observable information, the subsequent evolution of the NAT mechanism can be summarized into three scenarios.

Scenario 1: Mild growth, slow infiltration. In this path, NAT’s price maintains moderate growth, with per-block reward values reaching hundreds to thousands of dollars over the coming years. This level has practical significance for large miners but is insufficient to trigger a structural industry-wide change. Spider Pool maintains its current scale of integration, and some medium-sized pools begin experimenting with similar mechanisms. The mining ecosystem enters a continuous, non-revolutionary adjustment phase.

Scenario 2: Milestone breakthrough, triggering industry follow-up. If NAT’s market cap surpasses $50 billion, and per-block reward reaches $50,000, its contribution to miner revenue will shift from “minor supplement” to “substantial component.” This change will create significant competitive pressure, prompting other major pools to evaluate adopting similar protocols. The industry may develop standardized miner reward extension frameworks, spawning multiple competitive schemes based on different asset protocols.

Scenario 3: Expectations fall short, mechanism marginalized. If NAT’s token price fails to sustain growth and even shrinks due to persistent selling pressure, its per-block reward value will remain negligible for the long term. In this scenario, NAT will regress into an innovative but economically insignificant experimental feature. The mining community will refocus on cultivating the fee market and expanding second-layer solutions like the Lightning Network.

The probability distribution of these three scenarios depends on the endogenous dynamics of the token economy and external market conditions. No path is predetermined, and none can be definitively excluded.

Conclusion

The launch of Spider Pool’s NAT distribution mechanism is one of the most noteworthy structural experiments in Bitcoin mining between 2025 and 2026. It does not involve protocol-layer modifications but opens a new growth equation at the application layer of miner revenue models. Whether this equation can solve the long-term answer to the network security budget depends on the interplay of token prices, miner behaviors, competitive dynamics, and regulatory environments.

A confirmed fact is that Bitcoin miners’ revenue structures now have a second formal reward curve originating from the same block, same address, and same hash power system. Regardless of how high this curve ultimately grows, it has already rewritten the baseline of the mining economic model discussion. For everyone involved or observing this industry, understanding the operation logic and potential impact of this mechanism is not a multiple-choice question but a compulsory course.