NAUT tracks 117 Blockchain Capital co-investors: 109 firms and 8 individual angels who sit on at least 1 of the 38 Blockchain Capital round records that carry a co-backer, announced between March 2017 and November 2026. Polychain Capital invests alongside Blockchain Capital most often, on 8 of those round records, followed by Coinbase Ventures and Delphi Digital on 7 each.
How this was counted: on 13 November 2026, NAUT's data shows 40 round records in the Blockchain Capital portfolio, under Blockchain Capital's NAUT page, across 34 companies. 38 of them list at least 1 other backer on NAUT's record, and those 38 hold 211 co-backer entries that resolve to 117 distinct investor pages. An archived duplicate Blockchain Capital row is merged into the main page and adds no rounds. 9 of the 40 records carry no announce date on NAUT, so the window runs from the dated ones. NAUT stores no lead flag on any co-investor entry here, so this list says who joined a round, never who led it. NAUT holds 3 round records for Celestia and 4 for Allora Network, so a firm in those deals can count 2 or 3 times; the Cos column counts each company once. 10 outside claims about 7 of the named firms were put to sources, 7 came back confirmed and the 3 that did not are left out.
Which Blockchain Capital co-investors share the most rounds?
Polychain Capital does, on 8 shared round records across 7 companies. The table ranks the 12 co-investors on 4 or more shared round records, ranked by shared rounds, ties in alphabetical order.
| Co-investor | Rounds | Cos | Overlap |
|---|---|---|---|
 Polychain Capital |
8 | 7 | Orchid, Nervos Network, Badger DAO,  EigenCloud,  Celestia, =Nil; Foundation,  Allora Network |
 Coinbase Ventures |
7 | 6 |  OpenSea, Bounce Finance, Forta, Redstone, EigenCloud, Celestia |
 Delphi Digital |
7 | 3 | Allora Network,  CoW Protocol, Celestia |
 CoinFund |
5 | 2 | Allora Network,  Fuel Network |
 Maven 11 Capital |
5 | 3 | Redstone, Fuel Network, Celestia |
 Placeholder Ventures |
5 | 3 | Seed Club, Across Protocol, Celestia |
 The Spartan Group |
5 | 3 |  Solv Protocol, Fuel Network, Celestia |
 1confirmation |
4 | 3 | Nervos Network, Nexus Mutual, OpenSea |
 1kx |
4 | 4 | Nervos Network, CoW Protocol, Camp Network,  0xPredicate |
 Balaji Srinivasan |
4 | 3 | OpenSea,  Lens Protocol, Celestia |
 Figment Capital |
4 | 2 | Archway, Celestia |
 Slow Ventures |
4 | 2 | Parallel Finance, Allora Network |
10 more share 3 round records each: Alameda Research, Bain Capital Crypto, Dialectic Capital, Framework Ventures, Galaxy Digital (Ventures), Jump Crypto, Mechanism Capital, NFX, Pantera Capital and The LAO. Below them, 24 share 2 records and 71 share 1, so 46 of the 117 overlap more than once.
Ranked by companies instead of round records, the order changes at the top: Polychain Capital on 7, Coinbase Ventures on 6, then 1kx on 4. Delphi Digital's 7 records sit at 3 companies, because 6 of them are Celestia and Allora Network records.
Read Alameda Research's row as history. It was a crypto trading firm founded in 2017 by Sam Bankman-Fried and Tara Mac Aulay, and it filed for Chapter 11 in November 2022 after the FTX collapse. Balaji Srinivasan is an individual investor, listed on NAUT as an investor page.
How often do Blockchain Capital co-investors share a round?
The top 3 hold 22 of the 211 co-backer entries, and 71 of the 117 backers appear on a single record.
Which Blockchain Capital rounds drew the most co-investors?
The Lens Protocol seed round did, with 19 other backers on NAUT's record. These 6 records carry the most co-backers; the Backers column counts other backers on NAUT's record.
| Company | Round | Date | Backers |
|---|---|---|---|
| Lens Protocol |
Seed Round | No date on NAUT | 19 |
| Celestia |
Private B Round | No date on NAUT | 16 |
| Celestia |
Private A Round | No date on NAUT | 16 |
| Solv Protocol |
Series A | 1 December 2021 | 13 |
| Fuel Network |
Series A | 6 September 2022 | 10 |
| CoW Protocol |
Token Round | 29 March 2022 | 9 |
Celestia is where the syndicate meets most: 8 of the 12 tabled co-investors sit on at least 1 of its 3 Celestia records, all but CoinFund, 1confirmation, 1kx and Slow Ventures. The 4 rounds from 2026 with co-backers on NAUT pull a different crowd. Of the tabled 12, only 1kx appears on a round announced in 2026, on 0xPredicate's Series A of 27 October 2026. Tare's seed of 16 September 2026 carries 5 co-backers on NAUT, Stani Kulechov among them, PhotonPay's Series C of 29 October 2026 carries 3, and Uranium Digital's Series A of 5 November 2026 carries 1, Portal Ventures.
What this tells a BD team
- Blockchain Capital's deals cluster around a repeat core: 46 of the 117 backers came back for a 2nd round record.
- A team already selling to Polychain Capital or Coinbase Ventures portfolio companies is selling to 7 and 6 of the same companies Blockchain Capital backed.
- The 2026 rounds bring new names: 0xPredicate, Tare, PhotonPay and Uranium Digital share only 1kx with the tabled 12.
- Pick the overlapStart with the companies where Polychain Capital and Coinbase Ventures both sit, such as EigenCloud and Celestia.
- Open the company pageEach linked company page on NAUT lists its team and its backers.
- Find the peopleEach fund page on NAUT lists its team.
- Ask for the introAsk the shared backer for a warm intro to the company.
What this tells a founder raising
- If Blockchain Capital investors are your target, Polychain Capital, Coinbase Ventures and Delphi Digital are the 3 funds NAUT's record pairs with it most.
- 1kx is the only tabled co-investor on a 2026 round, so it is the freshest pairing on NAUT's record.
- 9 of the tabled 12 sit on a Fuel Network or Celestia record, so a founder whose raise resembles those deals has a ready list of funds that already sat together.
- Map who pairsPolychain Capital sits beside Blockchain Capital on 8 round records.
- Check recent activity0xPredicate, Tare, PhotonPay and Uranium Digital are the 4 rounds from 2026 with co-backers on NAUT.
- Line up 2 or 3 fundsPitch Blockchain Capital with a fund from the table that already shares companies with it.
- Reach the partnerUse each fund's NAUT page to find the right partner and their channels.
How to reach the decision makers
Every name in the tables links to its NAUT page. A fund page lists its team and its portfolio rounds, and each person page says which channels NAUT holds on file. Blockchain Capital's own X account is @bcap, and its X bio and homepage both say it has been a partner to crypto builders since 2013. Anyone listed can ask NAUT to remove their page at https://naut.so/legal/data-deletion.
Related reading on NAUT: Crypto co-investors: 3 steps, 168 on 66 rounds for 1 fund and Polychain Capital portfolio: 70 companies, $28.9M average round.
Can you pull this data through the NAUT API?
Yes: GET https://api.naut.so/v1/investors/blockchain-capital with your key as $NAUT_KEY returns the fund with its team and portfolio rows (company, round type, amount, announce date, lead flag), and the same call on a co-investor such as polychain-capital returns its portfolio, so matching companies rebuilds the overlap. Each call costs 5 credits, and the Essential plan at $49 a month holds 3,000 credits; see the API docs and pricing. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan, so start a 7-day trial.
Blockchain Capital co-investors FAQ
Which funds invest alongside Blockchain Capital most often?
Polychain Capital shares 8 round records with Blockchain Capital on NAUT, and Coinbase Ventures and Delphi Digital share 7 each, read 13 November 2026. CoinFund, Maven 11 Capital, Placeholder Ventures and The Spartan Group follow on 5.
How many co-investors does Blockchain Capital have?
NAUT's data shows 117 distinct co-investors, 109 firms and 8 individuals, across the 38 Blockchain Capital round records that list another backer, read 13 November 2026. 46 of them share 2 or more of those records.
Where can I find Blockchain Capital's co-investors and their contact channels?
NAUT's Blockchain Capital page and the 117 linked investor pages list each fund's team, and GET https://api.naut.so/v1/investors/blockchain-capital returns the portfolio behind them for 5 credits. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan: start a 7-day trial.
When was Blockchain Capital founded?
Blockchain Capital was founded in 2013 by Bart and Brad Stephens, and its own homepage says "Partners to crypto builders since 2013."
Sources
- NAUT round and backer records for Blockchain Capital, read 13 November 2026.
- Blockchain Capital homepage and Wikipedia: Blockchain Capital, founding year and founders.
- Blockchain Capital on X, handle.
- Wikipedia: Alameda Research and BNN Bloomberg, Alameda Research's founding and wind-down.