Firo (formerly Zcoin) Explorer - Reading Assignment

[kylemoore8]

1. 182463.94882676 Firo

2. 10, 1, 0.1, 0.1, 0.05

3. Amount sent, amount received, fee, number of transactions.

4. This would vary depending on the number of unspent sigma mints in the 100 ZCOIN denomination.

[Uyan]

1. As of March 11, 2021, there are 826062.15 (received) - 643598.20117324 (spent) = 182463.95 FIRO (unspent) shielded Zcoins in circulation.

2. Users can only mint Zerocoins in predetermined denominations.

Hence for a 11.25 FIRO transaction:

11.25 = 10 + 1 + 0.1 + 0.1 + 0.05

This gives 5 total transactions (ignoring change and fees)

3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend.
   If you know Alice’s address, you will know the amount spent.
   If you know Bob’s address, you will know the amount received.
   If you know both addresses, you can work out the fees and the number of confirmations.

4. We can calculate Bob’s anonymity set using SigmaStatus

As of March 11, 2021, the coin denomination with the lowest amount of coins available is the 100 FIRO denomination, which has 264 available (unspent). One of these coins will be Bob’s, so the anonymity set should be 263.

EDIT: corrected. I missed some detail in my initial phrasing

[Alko89]

@Uyan

As of March 11, 2021, the coin denomination with the lowest amount of coins available (shielded) is 264 . One of these coins will be Bob’s, so the anonymity set should be 263 .

Its actually number of unspent FIRO of the same denomination (100)

[Dani_Kavcic]

Correct please if I got lost somewere.

1. total recived(826062.15)-total spent(643598.2)= 182463.95 coins in circulation.

2. 4 zerocoins, created by predeterminated dominations so for 11,26 we see 10+1 +2x0,1+0,05.

3. Amount sent, recieved, fee and number of tx.

4. Relying on the table on https://explorer.zcoin.io/sigmastatus, looking in the spent column you can see that

|Denom|Mint|Spent|Available|
|100|7.262|5.532|1.730|

so looking at this we can say that has 5.532 spent and because one of this coins is Bob’s anonymity is (-1 Bob) 5.531.

[Alko89]

@Dani_Kavcic

so looking at this we can say that has 1,730 available and because one of this coins is Bob’s anonymity is 1729.

Its the number of spent denominations.

[Alex_Chaz]

1. 826062.15 FIRO(sigmamint) - 643598.20117324 FIRO (sigmaspend)
   around 182k

2. 1 x 10 ZCoin, 1 x 1 ZCoin, 1 x 0.25 ZCoin, and 1 x 0.01 ZCoin

3. both alice and bob would know: spent and received amount

4. that would be the least available denomination? at time of writing would be 25 denom 264 available? am I correct? (from sigmastatus)

[Alko89]

@Alex_Chaz

1 x 0.25 ZCoin

There is no 0.25 denomination available, you can use 0.1 and 0.05.

@Alex_Chaz

that would be the least available denomination? at time of writing would be 25 denom 264 available? am I correct? (from sigmastatus)

Its all spent denominations of the coin.

[LukeS]

1)826062.15 FIRO - 643598.20117324 FIRO= 182,463.949 FIRO
2) 10+1+0.1+0.1+0.05
3) The amount sent and received, the fees, and the number of transaction
4) Bobs anonymity set would be 1730-1

[Alko89]

@LukeS

4. Bobs anonymity set would be 1730-1

Its actually the number of spent denominations, so 5,532 (- 1).

[Bull75rm]

1. Total recived(826062.15)-total spent(643598.2)= 182463.95 coins in circulation.

2. Hence for a 11.25 FIRO transaction = 10 + 1 + 0.1 + 0.1 + 0.05. This gives 5 total transactions

3. If you know Alice’s address, you will know the amount spent . If you know Bob’s address, you will know the amount received .

4. 4068 – 1

[Aiisnotbad]

@Grant_Hawkins

• What is the net number of shielded Zcoins in circulation, as of today?
• Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs?
• Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address?
• In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders)

. Number of minted coins minus the number of spent coins. 182 464.

. 5 tx :
10, 1, .1, .1, 05

. If you know Alice’s address : amount, timestamp, Alice perpective.
If you know bobs adresse : amount, timestamp on bobs perpective.

. If you know Alice address, you take the smallest set among the denominations, using this tracker : https://explorer.zcoin.io/sigmastatus

[mervxxgotti]

1. What is the net number of shielded Zcoins in circulation, as of today? — Total received: 826062.15, Total spent: -643598.20117324. Total received - total spent = 182463.9488268 coins in circulation
2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs? — 10 + 1 + 0.1 + 0.1 + 0.05 thus 5 transactions
3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address? If you know Alice’s address, you know the amount she sent. If you know Bob’s you know the amount he received.
4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders) — found here https://explorer.zcoin.io/sigmastatus

[vegas316]

1. What is the net number of shielded Zcoins in circulation, as of today?
26/04/2021 -
826062.15 FIRO have been minted
-643598.20117324 FIRO have been spent
= 182463,95 net FIRO

2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs?
5: 10 + 1 + (2 * .1) + .05

3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address?
Sent amount, Received amount, Number of transactions

4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders)
The anonymity set is determined by the anonymity set of the individual denominations, which can be found here: https://explorer.zcoin.io/sigmastatus

[ol_frank]

1. What is the net number of shielded Zcoins in circulation, as of today?
   182,464

2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs?
   5 total transactions

3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address?
   amount sent (Alice), amount received (Bob)

4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders)
   https://explorer.zcoin.io/sigmastatus

[Zulu1]

1. What is the net number of shielded Zcoins in circulation, as of today? Mint 826062.15 - Spent 643,598.2011 = 182,463.95

2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs? 4 outputs, 10 zcoins, 1, .2, .05

3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address? Amount sent from Alice and fees, amount Bob received, total transactions and fee.

4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders) Don’t know the calculation.

[Alko89]

@Zulu1

Don’t know the calculation.

Its the number of all spent same denominations, you can check this on sigmastats website.

[Samuel1]

Shielded Zcoins in circulation, 3.4 million.
11 Zcoin and 0.26 ZCOIN
Alice’s spend amount, Bob’s receieve amount and confirmations, and total amount and fee amount.
https://explorer.zcoin.io/sigmastatus

[HemalT]

1. What is the net number of shielded Zcoins in circulation, as of today?

Total Received 826062.15 FIRO
Total Spend 643598.20117324
182,463.94882676 FIRO
2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs?
???
3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address?
For any address you can view: Total Received, Total Sent, Final Balance, Number of Transactions where the address was involved (and at next level all amounts).
4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders)
The number of unspent sigma mints in the 100 ZCOIN denomination

[Alko89]

@HemalT

???

You have to build the required amount from the available denominations. You can help yourself with checking the https://explorer.zcoin.io/sigmastatus site.

[maxs]

1. What is the net number of shielded Zcoins in circulation, as of today?
   182.463,9489

2. Suppose you want to shield 11.25 Zcoins via Sigmamint. Ignoring change and fee, what will be the number and value of transaction outputs?
   5 outputs: 1x10, 1x1, 2x0,1, 1x0,05

3. Alice shields 100 Zcoins via Sigmamint and sends them to Bob via Sigmaspend. What information is visible if you know Alice’s address? If you know Bob’s address?
   -Alice’s address: Amount, fees, date, transaction outputs.
   -Bob’s address; Amount, fees, date.

4. In the above scenario, how do we calculate Bob’s anonymity set? (the number of different plausible senders)
   Minted and unspent coins of the same denomination