Open Set
2018 #242 Pikachu-Holo PSA 9 Japanese SM Promo

Receipt drop-388

All drops

Drop 388

2018 #242 Pikachu-Holo PSA 9 Japanese SM Promo

  • Insured value $155
  • Rarity: common
  • Awarded
Winner
FSshj2idppnCKF8LkTaPoqH6HfiMumkiJ1BVXD4Yi52e
Delivered
12 Sep 2026 · 18:46 UTC
View the card on chain

How this winner was picked

Every input below is published so anyone can recompute the result. The order matters: each step was fixed before the next one could be known.

Anyone can replay this draw with the verifier script in the repository, scripts/verify-receipt.mjs.

  1. 01

    Snapshot frozen

    Every holder balance was read at one finalized slot, 446,500,742. Nothing bought after this slot could change the draw. Slot 446,500,740 was the finalized head when the pot tripped the target; the cluster answered at the slot above, so both are recorded.

    Snapshot slot
    446500742 (requested 446500740)
    Snapshot blockhash
    6UK2EE3c1qwYUqiYjsX9dMdYRCebYW3LFppvGTwUDjrThex 51497e3a9a42e26f0800237e41c0ec9b729f0f6b604e6c619482ca1c3870946c
  2. 02

    Candidates locked

    267 eligible wallets were hashed into a single fingerprint. If even one entry were altered, this hash would not match.

    Candidates
    267
    Total weight
    26145
    Candidates hash
    0x628743ec412c5115caf703f9daad6c74e6a37ac4e3b42f4caeafdb2484901c81Download the full candidate list
  3. 03

    Entropy from a future slot

    The seed came from slot 446,500,892, which had not been produced when the candidates were locked. Nobody could know it in advance.

    Entropy slot
    446500892
    Entropy blockhash
    Fi7JPZDsAPLBpUyYGWrx2K8KNuag4xzUWahwRXszKnnXhex da8b8da8cfb7daa26648e31fb0be015db3a20c23e99d47e83a23cf838a43abc4
  4. 04

    Winner computed

    Run the formula below over the frozen candidate list with this seed and you land on the same wallet, every time.

    Seed formula
    seed = keccak256(base58decode(entropyBlockhash) || uint256(cycleId) || candidatesHash); roll = seed mod totalWeight; winner = first candidate whose cumulative weight exceeds roll; candidates sorted bytewise by base58 address
    Draw seed
    0xd579173ff6d6f43e9a6f9cd085e1e7171e790e8fba1a3950caae0e8f26febfac
    Winner index
    221
    Winner weight
    115

On-chain proof

The pack was paid for and the card was minted straight to the winner. The transaction links below record the payment and NFT mint.

Payment
2aYbfstVCwFtSfXEGhSABezvepvqYLqK3YFpgfWUtAN6bYgrsAaEDGE19X7XXJKYQBo5iy61UyxtvWxJRUZk4Zov
Mint
218vEQCjB9VYR3TYs5tGg7sa5eLYS83WgbJ2YzbcbJXNh6d2rLmY2aQXJsJcDjhLT1jPNRJB5U5sK8PnkdifRd8X
Card
2pzW7Emn14LKVy3dfjz4M8VseSw3s1xcG7q9xGDhMyb8
Chain
solana-mainnet

What paid for it

Token trading fees filled the pot until it covered this pack. The pack was then bought from Collector at the listed price.

Pack
pokemon_250
Price
$250
Fee asset
USDC
Collector order
cc-2ae674f4-70a8-4261-b2e2-288b0f9c15e8
Payment mint
EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
Token mint
8LstZpZuR9Dy7JCZC3YwPEWtbYhuDVFAYV37r6ZAcuHz
Snapshot taken
12 Sep 2026 · 18:42 UTC
Raw receipt

The full record, exactly as it was published.

{
  "id": "drop-388",
  "cycleId": 388,
  "version": 3,
  "target": {
    "machine": "pokemon_250",
    "priceUsd": "250",
    "rungUsd": "250",
    "chain": "solana-mainnet",
    "reason": "volume: the pot already covers $250"
  },
  "venue": {
    "name": "stonk.fun",
    "program": "cpmm",
    "mint": "8LstZpZuR9Dy7JCZC3YwPEWtbYhuDVFAYV37r6ZAcuHz",
    "quoteMint": "CARDSccUMFKoPRZxt5vt3ksUbxEFEcnZ3H2pd3dKxYjp",
    "pool": "5dYsxy1hJ8DxejsfHJR9wyRsuLHw6wCLKk7idc1kszUn"
  },
  "fees": {
    "amount": "250000000",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "assetSymbol": "USDC",
    "decimals": 6
  },
  "snapshot": {
    "slot": 446500742,
    "requestedSlot": 446500740,
    "blockhash": "6UK2EE3c1qwYUqiYjsX9dMdYRCebYW3LFppvGTwUDjrT",
    "slotSpread": 0,
    "indexSlot": 446500740
  },
  "candidates": {
    "count": 267,
    "hash": "0x628743ec412c5115caf703f9daad6c74e6a37ac4e3b42f4caeafdb2484901c81",
    "totalWeight": 26145
  },
  "winner": {
    "address": "FSshj2idppnCKF8LkTaPoqH6HfiMumkiJ1BVXD4Yi52e",
    "weight": 115,
    "index": 221
  },
  "randomness": {
    "entropySlot": 446500892,
    "entropySlotRequested": 446500892,
    "entropyBlockhash": "Fi7JPZDsAPLBpUyYGWrx2K8KNuag4xzUWahwRXszKnnX",
    "seedFormula": "seed = keccak256(base58decode(entropyBlockhash) || uint256(cycleId) || candidatesHash); roll = seed mod totalWeight; winner = first candidate whose cumulative weight exceeds roll; candidates sorted bytewise by base58 address",
    "seed": "0xd579173ff6d6f43e9a6f9cd085e1e7171e790e8fba1a3950caae0e8f26febfac"
  },
  "collector": {
    "memo": "cc-2ae674f4-70a8-4261-b2e2-288b0f9c15e8",
    "machine": "pokemon_250",
    "chain": "solana-mainnet",
    "paymentMint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amountBaseUnits": "250000000"
  },
  "transactions": {
    "pay": "2aYbfstVCwFtSfXEGhSABezvepvqYLqK3YFpgfWUtAN6bYgrsAaEDGE19X7XXJKYQBo5iy61UyxtvWxJRUZk4Zov",
    "mint": "218vEQCjB9VYR3TYs5tGg7sa5eLYS83WgbJ2YzbcbJXNh6d2rLmY2aQXJsJcDjhLT1jPNRJB5U5sK8PnkdifRd8X"
  },
  "card": {
    "mint": "2pzW7Emn14LKVy3dfjz4M8VseSw3s1xcG7q9xGDhMyb8",
    "name": "2018 #242 Pikachu-Holo PSA 9 Japanese SM Promo",
    "rarity": "common",
    "insuredValueUsd": 155,
    "imageUrls": [
      "https://nft.collectorcrypt.com/front/2026082813C233675",
      "https://d1xpxki1g4htqu.cloudfront.net/L3IgPWI73XfXyTHMnqtk-mpsZ87pObYTw4K7ckFTbG4",
      "https://cdn.helius-rpc.com/cdn-cgi/image//https://nft.collectorcrypt.com/front/2026082813C233675",
      "https://nft.collectorcrypt.com/back/2026082813C233675",
      "https://d1xpxki1g4htqu.cloudfront.net/pjUY9WJBUJWVUoRoUDsgNKFxhEYkBUGr_fly0O02T7o",
      "https://cdn.helius-rpc.com/cdn-cgi/image//https://nft.collectorcrypt.com/back/2026082813C233675"
    ]
  },
  "timestamps": {
    "snapshotAt": 1789238540135,
    "awardedAt": 1789238782448
  },
  "finalStatus": "AWARDED",
  "executionMode": "live"
}
Open the API record