FEIP12V3_Concern(en-US)

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FEIP12V3_Concern(en-US)

Contents

Summary

General consensus of FEIP

Consensus of this protocol

Add

Delete

Recover

---

Summary

Protocol type: FEIP
Serial number: 12
Protocol name: Concern
Version: 3
Description :  Store the encrypted information of addresses you concerning on freecash blockchain.
Author: C_armX
Language: en-US
Created date: 2021-05-21
Last modified date：2023-01-11

---

General consensus of FEIP

1. Write important data in OP_RETURN for public witness under FEIP type protocols.

2. The SIGHASH flag of all transaction inputs is ‘ALL’ (value 0x01).

3. The max size of OP_RETURN : 4096 bytes.

4. The format of the data in op_return: JSON.

5. Encoding : utf-8.

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Consensus of this protocol

1. Store the encrypted information of addresses you concerning on freecash blockchain.

2. Use the public key of the first input address to encrypt the message.

3. The concerning belongs to the first input address of the transaction that added it.

4. Only the address who added the concerning can delete or recover it.

5. When updating an concerning, just delete it and add a new one.

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Add

When user adds a concerning, the OP_RETURN contains the data as follows:

field number	field name	type	content	required
1	type	String	Fixed: "FEIP"	Y
2	sn	int	Serial number. Fixed: 12	Y
3	ver	int	Fixed: 3	Y
4	name	String	Fixed: "Concern"	N
5	pid	hex	Id of this protocol	N
6	data.op	string	operation: "add"	Y
7	data.alg	string	The encrypt algorithm. "ECC256k1-AES256CBC" is recommended.	Y
8	data.ciphertext	string	Encrypted message	Y

Decrypted data of data.ciphertext

field number	field name	type	content	required
1	address	string	The FCH address of the concerning	Y
2	note	string	Notes to this concerning	N
3	noNoticeFee	boolean	Accept all notices from it regardless notice fee(see FEIP27).	N
4	seeStatement	boolean	Whether see its statement(see FEIP8).	N
5	seeWorks	boolean	Whether see its statement(see FEIP8).	N

Example for adding an item

The address adding or updating a concerning: FEk41Kqjar45fLDriztUDTUkdki7mmcjWK
Publickey: 6vU3ZMpwggurw92AUy1Vi6WBxEnBPdjupXGKD7Q5Zcw8yvdJAf
Privatekey: L2bHRej6Fxxipvb4TiR5bu1rkT3tRp8yWEsUy4R1Zb8VMm2x7sd8

OP_RETURN content:

{
    "type": "FEIP",
    "sn": 12,
    "ver": 3,
    "name": "Concern",
    "pid": "",
    "data":{
        "op": "add",
        "alg": "ECC256k1-AES256CBC",
        "ciphertext": "AtrFmWIFjVgOAiJV9ecB0V8vpWeGbc8nZwmJUFjan5zfnLQWLl0NH5Sjh/qWBU849x8yTpn7v6V0Hgdm2zuNGk4flfU2wyYBG2sRFlmagSLZNJQ8T/meD3FX3EGXken+bbG9P6MmSWqWZsAqnx/MtIu/ngXy/+TB6UyyvH3/e1rvPzqfrNKpzVRpcfycUFSlHmm4xU15DA/SZu01PYDUI+AR/x2poKftABu7CxQinEp8bWBARYiDkvsplJLl7h+RJDtg5UgZZlAqG03GdgvmDEWkhHDuYrCKbWpoCILeEilW"
        }
}

Decrypted data of data.ciphertext:

{
    "address": "F86zoAvNaQxEuYyvQssV5WxEzapNaiDtTW",
    "note": "A public test address.",
    "noNoticeFee": true,
    "seeStatement": true,
    "seeWorks": true
}

---

Delete

When user deletes a concerning, the OP_RETURN contains the data as follows:

field number	field name	type	content	required
1	type	String	Fixed: "FEIP"	Y
2	sn	int	Serial number. Fixed: 12	Y
3	ver	int	Fixed: 3	Y
4	name	String	Fixed: "Concern"	N
5	pid	hex	Id of this protocol	N
6	data.op	string	operation: "delete"	Y
7	data.addTxid	string	The txid in which the concerning was added.	Y

Example for deleting an item

{
    "type": "FEIP",
    "sn": 12,
    "ver": 3,
    "name": "Concern",
    "pid": "",
    "data":{
        "op": "delete",
        "addTxid": "c0a5aacdead28266b5d2d2c0f1baa90df3b56e35293d381681b002e73066c14a"
        }
}

---

Recover

When user recovers a deleted concerning, the OP_RETURN contains the data as follows:

field number	field name	type	content	required
1	type	String	Fixed: "FEIP"	Y
2	sn	int	Serial number. Fixed: 12	Y
3	ver	int	Fixed: 3	Y
4	name	String	Fixed: "Concern"	N
5	pid	hex	Id of this protocol	N
6	data.op	string	operation: "recover"	Y
7	data.addTxid	string	The txid in which the concerning was added.	Y

Example for recovering an item

{
    "type": "FEIP",
    "sn": 12,
    "ver": 3,
    "name": "Concern",
    "pid": "",
    "data":{
        "op": "recover",
        "addTxid": "c0a5aacdead28266b5d2d2c0f1baa90df3b56e35293d381681b002e73066c14a"
        }
}

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