Ownership & Collateral Record
Note: For this proof-of-concept (PoC), information normally accessible only to licensed/authorized businesses (the parties’ real names and deal terms, serial numbers, original photos before masking, photo hashes, etc.) is shown here specifically to illustrate how the model works. Normally, AURAM manages data in two layers: a public ledger that anyone can verify on-chain, and a permissioned registry that keeps sensitive data confidential. The integrity of this confidential data is committed on-chain as the identification hash, so anyone can independently verify it against the on-chain values by following the Third-Party Verification Guide (in production, this data is subject to access control).
1. Identification
Information that uniquely identifies this gold ingot. The identificationHash computed from 5 elements (manufacturer, serial, weight stamp, purity, photo hash) is committed on-chain.
- NFT Token ID
- 1
- Manufacturer
- AURAM Sample
- Serial number (private)
- ••••••
- Weight (g)
- 100
- Purity
- 999.9
- Photo hash
- 0xeb3dce379861b6bed3f8d3982983429412240f1b08436df2c8930967bbecc93d
- Identification hash
- 0x265c448b5fd820b67066be209bc3bbb2b57e7877a37678c4caf941b45c7770b9
2. Ownership history
Ownership transfer is recorded in two stages: declaration of intent (cause) and transfer of possession (perfection). The declaration of intent is what causes the transfer, such as a sale (Article 176), whose terms hash (termsHash) is published on-chain. The transfer of possession is the subsequent stage (Article 184 / Article 178 perfection).
New Issuance
- New IssuanceOriginal acquisition by issuance (the starting point of possession).Public On-chain raw data (verifiable by anyone, pseudonymous)Status transition: — → UnpledgedPermissioned Registry (PoC public, legal names / terms)New Issuance→株式会社ハンズオン
Declaration of Intent (Cause)
Article 176 (will principle): ownership transfer takes effect by the parties' declaration of intent. The cause is published on-chain via termsHash.
- Sale
Transfer of Possession (Perfection)
Article 184: instruction → consent completes the transfer of possession (consent is the perfection point); Article 178 perfection is satisfied.
- Transfer of possession (perfection)Current possessorArticle 184: instruction → consent completes the transfer of possession (consent is the perfection point); Article 178 perfection is satisfied.Public On-chain raw data (verifiable by anyone, pseudonymous)Status transition: Instructing Transfer → UnpledgedPermissioned Registry (PoC public, legal names / terms)株式会社ハンズオン→株式会社アウラムSale price: ¥2,277,200 (incl. tax)
Raw data: full list of all Tx for this NFT (pre-annotation chain raw data)
All on-chain operations (Tx) against the AssetNFT contract. If the side-by-side annotation above is the post-annotation view, this is the pre-annotation raw data. Because Snowtrace's individual NFT page only shows ERC-721 Transfer events (mint and ownership transfers), all Tx including state changes such as setStatus can be checked from this list.
- 2026/06/25 11:29:34 JSTNFT issuance (mint)— → Unpledged
- 2026/06/25 11:31:30 JSTDeclaration of intent recorded (sale agreement, Civil Code Art. 176)
- 2026/06/25 11:32:24 JSTSeller's instruction issued (Civil Code Art. 184)OnSale → Instructing
- 2026/06/25 11:33:13 JSTBuyer's consent / transfer completed (Civil Code Art. 184 = perfection point)Instructing → Unpledged