Bitcoin Second Subsidy Explained: How NAT Tokens Support Miners

Why Bitcoin Needs a Second Subsidy

The NAT protocol, also referenced as DMT-NAT or TAP DMT-NAT, emerged from the observation that Bitcoin's block subsidy halves approximately every four years. As outlined in the NAT paper, the issuance engine reads the bits field from each block header, translating Bitcoin's difficulty into a deterministic amount of NAT created at block height 885,588 and beyond. This second subsidy supplements shrinking BTC rewards, helping miners keep rigs online without altering Bitcoin's base layer.

By tying NAT directly to proof-of-work, the incentive preserves Bitcoin's security budget. Miners receive BTC fees, the native BTC subsidy, and NAT—priced freely on marketplaces like Ordinals Wallet—without soft forks or consensus changes. That direct alignment with mining economics is why industry observers call NAT the “second subsidy.”

How NAT Issuance Works

When a new Bitcoin block is mined, NAT smartly measures the posted difficulty and computes an equivalent reward tranche. The NAT paper describes this as “mining bits into NAT,” ensuring every block mints tokens proportionally to network security. Because miners can immediately bring those tokens to Ordinals Wallet for liquidity, the cycle reinforces hash rate and marketplace depth.

• Genesis height: 885,588 on 27 February 2025.
• Computation source: the Bitcoin header bits target field.
• Delivery: tokens inscribed via the TAP protocol and tradable against BTC.

Why Traders Care About NAT

As miners stream NAT to market, Ordinals Wallet aggregates price discovery, volume, and real-time circulating supply for the TAP DMT-NAT collection. This gives traders a single venue to monitor the supply schedule, chart performance versus BTC, and evaluate how NAT arbitrage strengthens miner balance sheets. The marketplace visibility is critical for anyone researching Bitcoin-centric second-subsidy assets.

Key Takeaways

• NAT is the live implementation of a Bitcoin-aligned secondary reward with no forks required.
• The issuance model leverages Bitcoin difficulty to maintain a predictable NAT flow.
• Ordinals Wallet is the premier venue to trade NAT with BTC and follow market analytics.

Frequently Asked Questions

What makes NAT a “Bitcoin second subsidy” and how does it differ from BTC rewards?

Traditional block rewards pay miners in BTC alone, while NAT adds an on-chain incentive layer that tracks the same proof-of-work difficulty. Every block since the February 2025 launch has created a fresh tranche of DMT-NAT, so miners can supplement their income without forks. The two rewards—BTC and NAT—work together to stabilize post-halving economics.

Where can I follow NAT price action and marketplace activity?

Ordinals Wallet curates the TAP DMT-NAT marketplace, showing live NAT/BTC pricing, sales volume, circulating supply, and market cap. It’s the best place to trade NAT tokens, compare NAT vs. BTC reward flows, and explore runes and ordinals collections in the same dashboard.

How does NAT relate to TAP, runes, and other Bitcoin layer-1 tokens?

NAT is issued using the TAP protocol, which makes it easy to inscribe fungible assets directly on satoshis. While runes focus on lightweight tokenization, TAP emphasizes structured metadata and trading workflows. NAT bridges both worlds by offering a runes-compatible asset that still behaves like a marketplace-ready “second subsidy” token.

Can traders predict the NAT supply schedule?

Yes. Because issuance depends on the block header bits, anyone can model the NAT supply curve based on public Bitcoin network data. Analysts often compare NAT supply growth, BTC hash rate, and marketplace listings to project future liquidity.