USDP is the first USDC-paired token on pump.fun, created at transaction index 421 in Solana slot 421218208 on May 21, 2026.

How is first place verified on-chain?

Solana assigns each transaction a fixed index within a slot. USDP's CreateV2 instruction succeeded at index 421 — the first successful USDC-paired launch after USDC was enabled at index 148.

Why isn't block timestamp enough?

Every event in slot 421218208 shares the same second-level block time (14:15:16 UTC). Only transaction index within the slot reveals the true sequence.

What is the USDP contract address?

The USDP mint address is L6boBWQ6fzDtAcXRL6LxfMs78FCWE8cxwMbTvchpump on Solana.

What was the first USDC-paired token on pump.fun?

USDP at transaction index 421 in slot 421218208. The second USDC-paired token appeared 112 indices later at index 533.

How can I verify USDP is first?

Open the linked transactions on Orb or any Solana explorer. Confirm USDC activation at index 148, no successful USDC-paired launches from indices 149–420, and USDP's CreateV2 at index 421.

When did pump.fun add USDC support?

USDC was enabled on pump.fun on May 21, 2026, via the AddQuoteMint instruction at transaction index 148 in slot 421218208.

Who maintains this site?

The USDP CTO community maintains usdpcto.com as a public on-chain archive. It is not investment advice — verify the slot record yourself.

Verify USDP on-chain

Anyone can confirm USDP is the first USDC-paired token on pump.fun. Follow the steps and open the linked transactions on Orb.

Step 1: Open slot 421218208

Review the full transaction list for the slot where USDC launched and USDP was created.
Step 2: Confirm USDC activation at index 148

The AddQuoteMint instruction enabled USDC as a quote mint on pump.fun.
Step 3: Confirm the gap from index 149 to 420

USDC was allowed, but no successful USDC-paired token launches appeared in this range.
Step 4: Confirm USDP at index 421

The CreateV2 instruction succeeded — the first USDC-paired token on record.
Step 5: Compare the second launch at index 533

The next USDC-paired token appeared 112 transaction indices later.

Contract address: L6boBWQ6fzDtAcXRL6LxfMs78FCWE8cxwMbTvchpump
Solana slot: 421218208
Transaction index: 421

Read the full record

Step 1: Open slot 421218208

Step 2: Confirm USDC activation at index 148

Step 3: Confirm the gap from index 149 to 420

Step 4: Confirm USDP at index 421

Step 5: Compare the second launch at index 533