Nic Carter is a general partner at Castle Island Ventures — a crypto VC firm with a Bitcoin-first research orientation — and co-founder of Coin Metrics, a leading blockchain data and analytics company; he is one of the most influential Bitcoin researchers and public intellectuals working in policy-adjacent crypto and is particularly known for: data-driven arguments about Bitcoin’s energy consumption (countering narratives that Bitcoin mining is purely wasteful); developing the concept of on-chain “UTXO age bands” and HODL waves; and articulating the case for Bitcoin as a supra-sovereign monetary commodity in the context of long-duration asset debates.
Background
Nic Carter studied philosophy and computer science. Before Castle Island, he worked at Fidelity Investments as the first cryptocurrency analyst, writing internal research on Bitcoin and digital assets for the firm’s institutional investment teams beginning in 2017. This was notable given Fidelity’s status as one of the first major traditional financial institutions to take digital assets seriously for institutional clients.
Coin Metrics
Carter co-founded Coin Metrics in 2017 with Antoine Le Calvez. Coin Metrics provides:
- On-chain data — UTXO-level transaction analysis, miner flows, exchange flows.
- Market data — Aggregated price data across exchanges.
- Network Data Pro — Institutional research and analytics subscription.
- FARUM — Real-time market intelligence platform.
Coin Metrics publishes a well-regarded weekly newsletter (“State of the Network”) and has become a reference source for institutional crypto research.
Castle Island Ventures
Carter joined Castle Island Ventures as a general partner. The firm focuses on investments in Bitcoin-adjacent infrastructure, regulated custodians, crypto compliance tooling, and data analytics companies — reflecting a thesis that Bitcoin-native infrastructure layers are underfunded relative to DeFi-oriented investments.
Key Research and Writing
Carter is a prolific essayist whose work is widely read in Bitcoin and policy circles:
- “Bitcoin doesn’t waste energy” (various iterations) — Systematic rebuttal of claims that Bitcoin PoW energy use is inherently wasteful, using comparisons to other commodity monetary systems (gold mining) and arguing that proof of work’s role is as a cryptographic cost anchor guaranteeing settlement finality.
- “HODL waves” visualization — Co-developed the concept and visualization showing the age distribution of Bitcoin supply (what percentage of supply hasn’t moved in 1y, 2y, 5y, etc.) as a tool for analyzing market cycle maturity.
- “A most peaceful revolution” (2018) — Essay arguing Bitcoin’s value proposition in the context of a global monetary order under stress.
- Bitcoin energy mapping — Collaborated with research teams to map Bitcoin mining’s energy mix, finding it has one of the highest renewable energy percentages of any major global industry.
Carter also writes on regulatory topics and is frequently cited in academic and policy contexts.
Key Dates
- 2017 — Joins Fidelity as first cryptocurrency analyst.
- 2017 — Co-founds Coin Metrics with Antoine Le Calvez.
- 2018 — Joins Castle Island Ventures.
- 2019–present — Publishes influential Bitcoin research essays and papers.
- 2021 — Bitcoin energy and mining research widely cited during ESG debate around Bitcoin mining.
Common Misconceptions
- “Nic Carter is a Bitcoin maximalist who dismisses all other cryptocurrencies.” — While Carter has a Bitcoin-first framework, he writes analytically about the broader crypto ecosystem through Coin Metrics and Castle Island investments extend beyond Bitcoin-only.
- “Castle Island is only a Bitcoin fund.” — Castle Island invests in Bitcoin infrastructure and broader crypto market infrastructure (data analytics, custody, compliance), not exclusively Bitcoin itself.
Last updated: 2026-04