Highlights

  • Metaplanet deposited 2,400 BTC, worth roughly $186 million, into Coinbase Prime within a three-hour window on August 31.
  • The move was independently confirmed by on-chain tracker Lookonchain and PANews, citing the same Arkham-monitored wallet activity.
  • Metaplanet's total Bitcoin treasury stands at 43,000 BTC, acquired at an average price of $96,191 per coin.
  • Coinbase Prime deposits are typically tied to custody or financing arrangements rather than outright sales.

Metaplanet, the Tokyo-listed bitcoin treasury company, moved another 2,400 BTC — worth about $186 million at current prices — into Coinbase Prime over a three-hour window on August 31, according to on-chain monitoring service Lookonchain. PANews independently reported the same transfer, citing identical wallet flows tracked through Arkham Intelligence. The deposit adds to a treasury that already holds 43,000 BTC, which Metaplanet built up at an average purchase price of $96,191 per coin, making it one of the largest corporate bitcoin holders outside the United States.

The transfer is visible on-chain through Metaplanet's tracked entity wallets on Arkham's block explorer, which shows the flow of coins into Coinbase's institutional custody infrastructure rather than a public exchange order book — a distinction on-chain analysts use to separate custody or collateral moves from open-market selling. Metaplanet has used Coinbase Prime repeatedly this year as its holdings scaled past the 40,000 BTC mark, a pace of accumulation that has made it the most closely watched corporate bitcoin buyer in Asia. Prime brokerage accounts typically combine cold storage with lending and financing rails, letting a company post bitcoin as collateral for credit lines without touching a spot market — a common treasury tactic among firms that want liquidity without crystallizing a sale.

Metaplanet Moves Another 2,400 BTC to Coinbase Prime in Hours
Image via @lookonchain on X

For a company whose stock trades largely as a bitcoin proxy, custody transfers this size draw scrutiny because they can precede either debt-backed buying or a treasury rebalancing. Neither Metaplanet nor Coinbase has indicated the deposit is a precursor to a sale, and repeated similar transfers earlier this month were followed by continued net accumulation rather than disposals. The bigger signal is structural: as corporate treasuries hold more bitcoin, prime brokerage relationships with regulated custodians like Coinbase become the plumbing connecting equity markets to on-chain assets, a shift regulators and institutional allocators are watching closely as more Nasdaq- and Tokyo-listed vehicles adopt bitcoin balance-sheet strategies.

Related: Trader Calls Sub-$76K Bitcoin a Buy Zone, Eyes Altcoin Rotation

The next marker to watch is Metaplanet's ongoing accumulation cadence heading into its next scheduled disclosure, when the company typically updates per-share bitcoin holdings and average cost basis. Traders tracking Coinbase Prime inflows will also be watching whether this deposit is followed by further transfers of similar size in the coming days, which on-chain desks read as a leading indicator of either additional collateralized borrowing or a broader treasury restructuring across Asia's growing roster of corporate bitcoin holders.

FAQ

Why did Metaplanet move Bitcoin to Coinbase Prime?
The deposit moved coins into institutional custody infrastructure that supports collateralized financing, a common treasury move that on-chain analysts distinguish from an outright sale.

How much Bitcoin does Metaplanet currently hold?
Metaplanet's treasury totals 43,000 BTC, built up at an average purchase price of $96,191 per coin.

Does a Coinbase Prime deposit mean Metaplanet is selling Bitcoin?
Not necessarily — Coinbase Prime combines custody with lending and financing services, so deposits are often used as collateral rather than routed to open-market sales.

Who confirmed the transfer?
On-chain tracker Lookonchain and PANews both reported the same wallet activity, which is also visible on Arkham's block explorer.