Physical Gold Standards

The CACHE Gold Standard

Not all gold is created equal when it comes to liquidity, taxation and compliance.

In bullion terms, there are three broad types of gold:

  • Branded Refinery Gold – Includes extensive controls on the gold’s origin
  • Junk gold – Gold jewelry and pellets for industrial use of various purities
  • Unmarked Gold – Illiquid, trades at discount and may have AML/CFT issues

Gold spot prices refer to the branded refinery variety. Because CACHE can tokenize gold for third-parties which can later be redeemed, it is important to maintain a minimum quality standards, which for CACHE, requires highly liquid, branded refinery gold.

The CACHE Gold standard prevents deposit of unmarked gold with the intention of withdrawing branded gold. CACHE also advises users against depositing minted gold coins because CACHE values the pure gold mass irrespective of premiums. This means the premium typically paid for coins over bars would be lost and other CACHE Gold token holders would have the opportunity to earn a riskless profit by redeeming their tokens for coins instead of bars.

CACHE Gold will be primarily backed by 1 KG branded gold bars since 1kg bars are a good compromise between low premiums and a practical minimum redemption value. 400 troy ounce good delivery bars and 100 grams are also expected to back CACHE Gold, however, redemptions will likely target bullion with the highest premiums resulting in 100 grams bars being redeemed first and leaving 1 KG and 400 troy ounce good delivery bars as the majority of CACHE Gold’s backing.

It is important to note that not all branded gold bars are uniform. The LBMA good delivery rules state that LBMA good delivery bars can vary between 350 to 430 troy ounces in weight and must have a minimum purity of 99.5%. Described below are the rules CACHE Gold implemented to ensure bars of different purities and weights are valued fairly and consistently.

Gram Determination

Since CACHE Gold operates on a pure gram basis rather than a troy ounce basis, it must consistently convert troy ounces to pure gold grams. This conversion uses the LBMA Conversion ratio between grams and troy ounces of 31.1034768 (7-digit precision).

GramChain® uses 2 digit precision to provide 1/100th of gram precision. Bars will therefore be rounded to 100.00 or 100.01 grams. This precision is exceeds the +/- 0.05g variation allowed by the Shanghai Gold Exchange and is equivalent to the LBMA 0.00032 troy oz variation standard as well.

A troy ounce gold bar is converted to grams:

  • 10 troy oz = 10 x 31.1034768 = 311.0348 grams - rounded to two digits (311.03)
  • 1 troy oz = 1 x 31.1034768 = 31.10348 grams - rounded to two digits (31.10)

Pure (Fine) Gram Determination

Purity variations are addressed by multiplying the gross bar weight times the stated purity. Therefore, a 400 troy ounce 99.5% pure bar would be 398 pure troy ounces whereas a 400 troy ounce 99.99% bar would be 399.96 pure troy ounces.

Secondary alloyed metals are ignored as only gold is measured. This is another reason not to deposit 92.5% gold purity American Eagle gold coins as their silver content balance will not be recognized.

GramChain® follows the LBMA purity rounding practice which truncates (rounds down) by default, unless the decimals to be truncated are 9 or more, in which case they are rounded up.

For example, a gold bar’s gross weight at:

  • 1,000 grams with 9999 purity would be 999.90 pure grams.
  • 10 grams with 999 purity would be 9.99 pure grams (10 x 0.999 = 9.99)
  • 10 grams with 9995 purity would also be 9.99 pure grams (10x 0.9995 = 9.995 rounded down)
  • 10 grams with 9999 purity would be 10 grams (10x 0.9999 = 9.999 rounded up)

Brand List

Any gold refineries on the LBMA list are accepted by CACHE Gold as are several reputable non-LBMA refineries and national mints. Sunshine Mint, for example, is a major provider of gold blanks to the US mint, is not an LBMA member but is accepted by CACHE Gold.

Branding filters are enforced via the GramChain® scanner directly at the vault at the time of scanning and later verified making it impossible to deposit gold bars that are not on CACHE Gold’s list of accepted refineries. It is possible for a brand to be added to the list upon request. Contact us at [email protected] to request an addition.

Refineries sometimes make custom bars as a white label service using other names. Such bars are acceptable as long as the refinery hallmark is present, clearly visible and the refinery is on CACHE Gold’s list of accepted refineries.

Currently the following brands are accepted:

  1. ABC Bullion (ABC) - ABC Refinery (Australia) Pty Ltd
  2. AGR Matthey (AGR) - AGR Matthey
  3. Al Etihad Gold (ALETIHAD) - Al Etihad Gold Refinery DMC Dubai
  4. Logam Mulia (ANTAM) - PT Aneka Tambang (Persero) Tbk (Logam Mulia)
  5. Argor-Heraeus (ARGOR) - Argor-Heraeus SA
  6. Asahi (ASAHI) - Asahi Refining / Asahi Pretec
  7. Austrian Mint (AUSTRIAN) - Muenze Oesterreich AG
  8. Banco de Mexico (BMEXICO) - Banco de Mexico
  9. Bangko Sentral (BSP) - Bangko Sentral ng Pilipinas
  10. Credit Suisse (CSUISSE) - Credit Suisse
  11. Degussa (DEGUSSA) - Degussa-Huels AG
  12. Emirates Gold (EMIRATES) - Emirates Gold DMCC Dubai
  13. Engelhard (ENGEL) - Engelhard Industries Pty Ltd
  14. Heraeus (HERAEUS) - Heraeus Deutschland GmbH & Co. KG
  15. IGR (IGR) - Istanbul Gold Refinery
  16. Ishifuku Tokyo Melters (ITM) - Ishifuku Metal Industry Co., Ltd.
  17. JBR (JBR) - JBR RECOVERY LTD
  18. Jiangxi (JIANGXI) - Jiangxi Copper Company Ltd
  19. Johnson Matthey (JM) - Johnson Matthey
  20. Korea Zinc Co Ltd (KZINC) - Korea Zinc Co Ltd
  21. LBMA good delivery bars (LBMA) - LBMA BAR
  22. LPPM good delivery bar (LPPM) - LPPM Bar
  23. LS Nikko Copper (LSNIKKO) - LS Nikko Copper Inc
  24. Matsuda Sangyo (MATSUDA) - Matsuda Sangyo
  25. Metalor (METALOR) - Metalor Technologies SA
  26. MMTC PAMP (MMTCPAMP) - MMTC-PAMP India Pvt. Ltd
  27. Nadir (NADIR) - Nadir Metal Rafineri San. ve Tic. Ltd.
  28. Ohio Precious Metals (OHIO) - Ohio Precious Metals, LLC
  29. Pamp (PAMP) - PAMP SA
  30. Peñoles (PEÑOLES) - METALÚRGICA MET-MEX PEÑOLES, S.A. DE C.V
  31. Perth Mint (PERTH) - Perth Mint
  32. Philoro Edelmetalle GmbH (PHILORO) - Philoro Edelmetalle GmbH
  33. People's Republic of China (PRC) - People's Republic of China
  34. Rand (RAND) - Rand Refinery (Pty) Ltd
  35. Royal Canadian Mint (RCM) - Royal Canadian Mint
  36. Republic (RMC) - Republic Metals Corporation
  37. The Royal Mint (ROYALM) - The Royal Mint Limited
  38. Swiss Bank Corporation (SBC) - Swiss Bank Corporation (Metalor)
  39. SEMPSA JP (SEMPSA) - SEMPSA JP
  40. SKS (SKS) - Shuikoushan Nonferrous Metals Group Co Ltd (SKS)
  41. Solar (SOLAR) - Solar Applied Materials Technology Corp.
  42. Sunshine Mint (SUN) - Sunshine Minting, Inc.
  43. Tanaka (TANAKA) - Tanaka Kikinzoku Kogyo K.K.
  44. TXY (TXY) - Sichuan Tianze Precious Metals Co., Ltd
  45. Umicore (UMICORE) - Umicore SA Business Unit Precious Metals Refining
  46. United States Mint (USMINT) - United States Mint
  47. Valcambi (VALCAMBI) - Valcambi S.A.

NOTICE OF COMPULSORY CGT TOKEN REDEMPTION

Date of Publication: 20 June 2025

Compulsory Redemption Date: 30 September 2025, 23:59:59 (Singapore Time)

CACHE is winding down its operations and will implement a compulsory redemption process in relation to all outstanding CACHE Gold Tokens (CGT). Please see the CACHE Terms of Service (the “TOS”) for more information on this compulsory redemption process, which may be found at https://cache.gold/terms-of-service. Capitalised terms in this notice shall have the meanings ascribed to them in the TOS. This notice should therefore be read in conjunction with the TOS.

The Compulsory Redemption Date is set for 30 September 2025 (Singapore Time). On that date:

  1. CGT tokens will cease to be backed by gold and will no longer be recognized, honored, or redeemable by CACHE. While CGT tokens may technically remains on the Ethereum blockchain, they will have no further utility, value, or backing.
  2. Subject to eligibility (please refer to the TOS for more information thereon), Pax Gold (PAXG) tokens will be distributed via an airdrop (a blockchain-based transfer that requires no action from you) in exchange for your CGT held in an Ethereum Wallet as at the Snapshot Time (not after). Each PAXG token represents 1 troy ounce of fine gold stored in LBMA-accredited vaults in London and issued by Paxos Trust Company.

The airdrop of PAXG tokens will be based on CGT balances recorded in the last Ethereum block mined prior to 30 September 2025, 23:59:59 Singapore Time (the “Snapshot Block”) (and the time at which the last Snapshot Block was mined being the “Snapshot Time”).

Each eligible Ethereum Wallet will receive:

Number of CGT tokens held in such Ethereum Wallet ÷ 31.1034768 (rounded down to the nearest 0.00000001 PAXG or 8 decimal places)

This conversion reflects that each CGT represents 1 gram of fine gold, and each PAXG represents 1 troy ounce (31.1034768 grams). No fiat or market price valuation will apply.

If you prefer to redeem your CGT manually (e.g., for physical gold or fiat), you may do so through the CACHE website no later than 26 September 2025, 23:59:59 Singapore Time.

By continuing to hold CGT, you are deemed to have (A) accepted the terms of the compulsory redemption process as set out in Clause 5A of our TOS, (B) accepted that all your rights in connection with the CGT held by you shall be extinguished upon the Compulsory Redemption Date, (C) agreed that, where eligible, the Compulsory Redemption Tokens airdropped into your Ethereum Wallet shall be in full and final settlement of your CGT tokens compulsorily redeemed, and (D) waived any right to further redemption, refund, or legal claim against CACHE following the Compulsory Redemption Date.


For assistance, please contact [email protected].


Thank you for supporting CACHE.