Fairness check

Verified fair

The result came from a secret number we locked before the pack was opened, combined with a number the player supplied. The three checks below were recomputed when this page loaded.

2020 POKEMON SWORD & SHIELD VIVID VOLTAGE #134 SWELLOW-REV.FOIL VIVID VOLTAGE

Pulled by merkaba

PSA: 55566458 Verify certification

Cardboard MagicNo. cmv6tsrwb0002z7kazuketicv10/13/2026, 11:18:31 AM ET

1 × Standard pack

Odds table: cmv5m2rs50002zzkamztnqgdv
Pool root: 226bb150dded7ff9aa818f80a81e0b6e63c31af5d2b7d7b05d4316a3304d3440
Seal hash: 2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Your number: 39d1c2e93955908c22cd56e46bbc122c
Roll: 0.347002

2020 POKEMON SWORD & SHIELD VIVID VOLTAGE #134 SWELLOW-REV.FOIL VIVID VOLTAGEPSA 10$15.50

Recompute at /verify · matches

Bought under odds version cmv5m2rs50002zzkamztnqgdv; drawn under odds version cmv5m2rs50002zzkamztnqgdv, the odds published when it was opened. The checks below are against the table it was drawn under, which was published at 2026-10-12 18:54 UTC, before the pack was opened at 2026-10-13 15:18 UTC.

Our secret number was locked first
This pack's sealed code was published before the pack was opened. The secret number we revealed afterwards produces the same code, so we did not change it.
The pack was picked from 5 sealed packs on the shelf. The numbers below include the packs that were not picked.
Numbers for this check
Sealed code, published first
2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Our secret number, revealed after
a38b546f1be16d66b559ae54e4f12d12273371c54c070f2147931659c113aba8
SHA-256 of our secret number
2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Every pack on the shelf showed its sealed code before the pick. The secret numbers of the packs that were not picked are revealed here, so anyone can check that the packs were all different: the SHA-256 of each one matches the code shown on the shelf. Those packs never had a result. A result needs the player's number, and only the picked pack received one.
Picked pack (this draw)
2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Other pack 1
f8d0bce846df5e70366536ce934237cc43573c3a41ef34fbb5ff87264c322c0a · sha256 50bbefb9f7e417e5…
Other pack 2
4f59d6d01cc4b9b9124552dd4ff8484107b4f683d6acd83809d5d4c62745af76 · sha256 7001f8b007b00479…
Other pack 3
4b44172783345a71a3be7b5a2425f1546511c07ef070a7c421b820ae6f3254a0 · sha256 5b5b4964e5b4ab9e…
Other pack 4
638cbe7ff41b97df1da78a2a8a4d3f43662a15247206d75abc6461bcfd2424f4 · sha256 4c6ece2ce4655be4…
The published odds set the value band
Our secret number and the player's number combine into a roll between 0 and 1. The odds published for this pack divide that range into value bands, and the roll falls in exactly one.
The roll 0.347002 falls in the value band Common, which covers 0.000000 to 0.661268.
Numbers for this check
Formula
HMAC-SHA256(serverSeed, `${clientSeed}:${nonce}`) → bytes 0–7 = roll1, bytes 8–15 = roll2
The player's number (client seed)
39d1c2e93955908c22cd56e46bbc122c
Draw counter (nonce)
0
HMAC-SHA256 output
58d51958c4d6781b0aed1ff9bc5bde43dde15f61b7b7d9371876f6fc7e475833
Roll 1, the value band
0.347001632855
Roll 2, the card
0.042680738898
Value band Probability Cumulative
Common 66.1% 0.661268
Uncommon 24.1% 0.902333
Rare 8.7% 0.989424
Chase 0.93% 0.998698
Legendary 0.13% 1.000000
The card came from the locked card list
Within its value band, every card's chance is proportional to 1 ÷ (value − $9.31), so a dearer card is always rarer than a cheaper one beside it; the band totals are the published ones, and they add up to 100%. $9.31 is set each time the table is solved, so the pack returns its published target. A featured card is only a label: its chance comes from the same formula. The second roll used each card's weight from that rule. Recomputing the pick gives the card the draw recorded. That card is on the card list locked when these odds were published.
Numbers for this check
Cards available in the value band
205
Weighted pick (roll 2 × total weight)
index 10 → itm_0865e48fdf9c
Card recorded on the draw
itm_0865e48fdf9c
Odds rule
value-curve-v1: weight = 1 ÷ (value − c)
c for these odds
931¢
Return the odds were solved to
110.00%
Card list root (Merkle root)
226bb150dded7ff9aa818f80a81e0b6e63c31af5d2b7d7b05d4316a3304d3440
Card list entry (leaf)
itm_0865e48fdf9c : 1550¢ : floor
Merkle proof length
8 siblings

Full proof record (JSON)

{
  "drawId": "cmv6tsrwb0002z7kazuketicv",
  "valid": true,
  "boost": null,
  "steps": {
    "serverSeedCommitment": {
      "serverSeed": "a38b546f1be16d66b559ae54e4f12d12273371c54c070f2147931659c113aba8",
      "serverSeedHash": "2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9",
      "recomputedHash": "2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9",
      "ok": true
    },
    "rng": {
      "clientSeed": "39d1c2e93955908c22cd56e46bbc122c",
      "nonce": 0,
      "formula": "HMAC-SHA256(serverSeed, `${clientSeed}:${nonce}`) → bytes 0–7 = roll1, bytes 8–15 = roll2",
      "hmacHex": "58d51958c4d6781b0aed1ff9bc5bde43dde15f61b7b7d9371876f6fc7e475833",
      "roll1": 0.3470016328545513,
      "roll2": 0.042680738897941994
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    "bucketSelection": {
      "published": [
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          "bucket": "floor",
          "probability": 0.6612681266977448,
          "cumulative": 0.6612681266977448
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        {
          "bucket": "mid",
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        {
          "bucket": "high",
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        {
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          "probability": 0.009273489858623897,
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        {
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          "cumulative": 0.9999999999999999
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      ],
      "weightsSource": "published",
      "roll1": 0.3470016328545513,
      "recomputedBucket": "floor",
      "recordedBucket": "floor",
      "ok": true
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        0.00208854306883891,
        0.004740554138479271,
        0.002747568363032461,
        0.0024679587987541363,
        0.004740554138479271,
        0.0022247179770422047,
        0.003582909660218154,
        0.002747568363032461,
        0.0028796889221969265,
        0.001944601068070688,
        0.0028796889221969265,
        0.0032352844671650143,
        0.0019305282971833343,
        0.0022247179770422047
      ],
      "roll2": 0.042680738897941994,
      "recomputedIndex": 10,
      "recomputedItemId": "itm_0865e48fdf9c",
      "recordedItemId": "itm_0865e48fdf9c",
      "ok": true
    },
    "poolMembership": {
      "oddsVersionId": "cmv5m2rs50002zzkamztnqgdv",
      "poolMerkleRoot": "226bb150dded7ff9aa818f80a81e0b6e63c31af5d2b7d7b05d4316a3304d3440",
      "leaf": {
        "id": "itm_0865e48fdf9c",
        "valueCents": 1550,
        "bucket": "floor"
      },
      "proof": [
        {
          "hash": "ec789352750e05ac55d757672a30effbb291bd9d9b98a2e6bbd0b01dd05462cc",
          "position": "left"
        },
        {
          "hash": "92bde84343336a6ed611b1ca202ebd58331d55ed689a8df6dee3973440ed38f8",
          "position": "right"
        },
        {
          "hash": "bbbc7d698cbcf2269c677038655e89a012b2968e410d2ae558570244c00bcc5b",
          "position": "left"
        },
        {
          "hash": "17da541786ebd598bc652cfb369ab1bf72d052fcaf6a0b08e4a7b9a0ec33536a",
          "position": "left"
        },
        {
          "hash": "f6b52c0b45dee927ee5b9a0b424238694c329aae54b6a63fb79ded29af35b7df",
          "position": "left"
        },
        {
          "hash": "b8f3efa76cf62217e786e4faf484efdbcd9ef22d1e009c5fc862ef88596e5572",
          "position": "left"
        },
        {
          "hash": "aeb4d4677cbc96f5c495682fd67f48c6bfa4b5b09f6a0bc6dbb29ec8d160e662",
          "position": "right"
        },
        {
          "hash": "73672c5630409127fa179e5fed29f7a94bf23c8f39e3ab4106ee3254bb68d6b7",
          "position": "left"
        }
      ],
      "ok": true
    }
  },
  "valueCurve": {
    "method": "value-curve-v1",
    "c": 931,
    "targetRtp": 1.1,
    "rule": "Within its value band, every card's chance is proportional to 1 ÷ (value − $9.31), so a dearer card is always rarer than a cheaper one beside it; the band totals are the published ones, and they add up to 100%. $9.31 is set each time the table is solved, so the pack returns its published target. A featured card is only a label: its chance comes from the same formula.",
    "weightsMatchRule": true
  },
  "tables": {
    "boughtUnderOddsVersionId": "cmv5m2rs50002zzkamztnqgdv",
    "drawnUnderOddsVersionId": "cmv5m2rs50002zzkamztnqgdv",
    "drawnTablePublishedAt": "2026-10-12T18:54:34.277Z",
    "openedAt": "2026-10-13T15:18:31.196Z",
    "publishedBeforeOpen": true
  },
  "set": null
}

Live feed · How our odds work

Our secret number was locked first

This pack's sealed code was published before the pack was opened. The secret number we revealed afterwards produces the same code, so we did not change it.

The pack was picked from 5 sealed packs on the shelf. The numbers below include the packs that were not picked.

Numbers for this check

Sealed code, published first: 2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Our secret number, revealed after: a38b546f1be16d66b559ae54e4f12d12273371c54c070f2147931659c113aba8
SHA-256 of our secret number: 2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9

Every pack on the shelf showed its sealed code before the pick. The secret numbers of the packs that were not picked are revealed here, so anyone can check that the packs were all different: the SHA-256 of each one matches the code shown on the shelf. Those packs never had a result. A result needs the player's number, and only the picked pack received one.

Picked pack (this draw): 2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9
Other pack 1: f8d0bce846df5e70366536ce934237cc43573c3a41ef34fbb5ff87264c322c0a · sha256 50bbefb9f7e417e5…
Other pack 2: 4f59d6d01cc4b9b9124552dd4ff8484107b4f683d6acd83809d5d4c62745af76 · sha256 7001f8b007b00479…
Other pack 3: 4b44172783345a71a3be7b5a2425f1546511c07ef070a7c421b820ae6f3254a0 · sha256 5b5b4964e5b4ab9e…
Other pack 4: 638cbe7ff41b97df1da78a2a8a4d3f43662a15247206d75abc6461bcfd2424f4 · sha256 4c6ece2ce4655be4…

The published odds set the value band

Our secret number and the player's number combine into a roll between 0 and 1. The odds published for this pack divide that range into value bands, and the roll falls in exactly one.

The roll 0.347002 falls in the value band Common, which covers 0.000000 to 0.661268.

Numbers for this check

Formula: HMAC-SHA256(serverSeed, `${clientSeed}:${nonce}`) → bytes 0–7 = roll1, bytes 8–15 = roll2
The player's number (client seed): 39d1c2e93955908c22cd56e46bbc122c
Draw counter (nonce): 0
HMAC-SHA256 output: 58d51958c4d6781b0aed1ff9bc5bde43dde15f61b7b7d9371876f6fc7e475833
Roll 1, the value band: 0.347001632855
Roll 2, the card: 0.042680738898

Value band	Probability	Cumulative
Common	66.1%	0.661268
Uncommon	24.1%	0.902333
Rare	8.7%	0.989424
Chase	0.93%	0.998698
Legendary	0.13%	1.000000

The card came from the locked card list

Within its value band, every card's chance is proportional to 1 ÷ (value − $9.31), so a dearer card is always rarer than a cheaper one beside it; the band totals are the published ones, and they add up to 100%. $9.31 is set each time the table is solved, so the pack returns its published target. A featured card is only a label: its chance comes from the same formula. The second roll used each card's weight from that rule. Recomputing the pick gives the card the draw recorded. That card is on the card list locked when these odds were published.

Numbers for this check

Cards available in the value band: 205
Weighted pick (roll 2 × total weight): index 10 → itm_0865e48fdf9c
Card recorded on the draw: itm_0865e48fdf9c
Odds rule: value-curve-v1: weight = 1 ÷ (value − c)
c for these odds: 931¢
Return the odds were solved to: 110.00%
Card list root (Merkle root): 226bb150dded7ff9aa818f80a81e0b6e63c31af5d2b7d7b05d4316a3304d3440
Card list entry (leaf): itm_0865e48fdf9c : 1550¢ : floor
Merkle proof length: 8 siblings

{ "drawId": "cmv6tsrwb0002z7kazuketicv", "valid": true, "boost": null, "steps": { "serverSeedCommitment": { "serverSeed": "a38b546f1be16d66b559ae54e4f12d12273371c54c070f2147931659c113aba8", "serverSeedHash": "2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9", "recomputedHash": "2710764762d2b0888c4cf4a32a6fc9ec8e8608de09bcff08adac23c1bfcb59a9", "ok": true }, "rng": { "clientSeed": "39d1c2e93955908c22cd56e46bbc122c", "nonce": 0, "formula": "HMAC-SHA256(serverSeed, `${clientSeed}:${nonce}`) → bytes 0–7 = roll1, bytes 8–15 = roll2", "hmacHex": "58d51958c4d6781b0aed1ff9bc5bde43dde15f61b7b7d9371876f6fc7e475833", "roll1": 0.3470016328545513, "roll2": 0.042680738897941994 }, "bucketSelection": { "published": [ { "bucket": "floor", "probability": 0.6612681266977448, "cumulative": 0.6612681266977448 }, { "bucket": "mid", "probability": 0.24106444346177183, "cumulative": 0.9023325701595166 }, { "bucket": "high", "probability": 0.08709144554213365, "cumulative": 0.9894240157016503 }, { "bucket": "chase", "probability": 0.009273489858623897, "cumulative": 0.9986975055602741 }, { "bucket": "grail", "probability": 0.0013024944397257451, "cumulative": 0.9999999999999999 } ], "weightsSource": "published", "roll1": 0.3470016328545513, "recomputedBucket": "floor", "recordedBucket": "floor", "ok": true }, "itemSelection": { "candidateItemIds": [ "itm_02647f5346f8", "itm_028de5345eec", "itm_04eaa60fb72b", "itm_070de2a3dda2", "itm_072487bdee5d", "itm_0733338058d6", "itm_07445ec6ec87", "itm_074e1f591ccb", "itm_077f8fede048", "itm_081b1b6e2263", "itm_0865e48fdf9c", "itm_0a6562e6ae1a", "itm_0b5c7f9eb017", "itm_0dd1605dbce3", "itm_0e3dedd07f2d", "itm_0f03323116c8", "itm_147dd5f60721", "itm_14cbc487d123", "itm_15b673a8b60a", "itm_169e4c8de8eb", "itm_18c76af3199a", "itm_1913f7946716", "itm_1a9002d301b9", "itm_1b1822eb98b6", "itm_1bcae2336639", "itm_1c35fe0a0e39", "itm_1c90786c48c5", "itm_1fce61ccc9a3", "itm_20143cbe6eac", "itm_21d6b8ff8e4b", "itm_234b07bc6a1f", 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"f6b52c0b45dee927ee5b9a0b424238694c329aae54b6a63fb79ded29af35b7df", "position": "left" }, { "hash": "b8f3efa76cf62217e786e4faf484efdbcd9ef22d1e009c5fc862ef88596e5572", "position": "left" }, { "hash": "aeb4d4677cbc96f5c495682fd67f48c6bfa4b5b09f6a0bc6dbb29ec8d160e662", "position": "right" }, { "hash": "73672c5630409127fa179e5fed29f7a94bf23c8f39e3ab4106ee3254bb68d6b7", "position": "left" } ], "ok": true } }, "valueCurve": { "method": "value-curve-v1", "c": 931, "targetRtp": 1.1, "rule": "Within its value band, every card's chance is proportional to 1 ÷ (value − $9.31), so a dearer card is always rarer than a cheaper one beside it; the band totals are the published ones, and they add up to 100%. $9.31 is set each time the table is solved, so the pack returns its published target. A featured card is only a label: its chance comes from the same formula.", "weightsMatchRule": true }, "tables": { "boughtUnderOddsVersionId": "cmv5m2rs50002zzkamztnqgdv", "drawnUnderOddsVersionId": "cmv5m2rs50002zzkamztnqgdv", "drawnTablePublishedAt": "2026-10-12T18:54:34.277Z", "openedAt": "2026-10-13T15:18:31.196Z", "publishedBeforeOpen": true }, "set": null }