Frequently Asked Questions

What is a Forkdrop? #

-A forkdrop is a chain fork implemented as an airdrop. A snapshot of the chain UTXO state (the existing addresses with their balances) is taken at a certain block height and then that information is written into the genesis block of a new blockchain. A forkdrop is an equitable way to relaunch a blockchain project because it maintains the existing coin ownership. A forkdrop has advantages over a simple chain fork (split) because it reduces the data storage needs and provides opportunities to improve performance by eliminating unneeded history data and deprecated code.

The term “forkdrop” is a better description than “airdrop” to describe launching a chain using a UTXO snapshot.

Historically, snapshots have been used by many blockchain projects to give away coins for free as part of a promotional event, possibly to a limited privileged group of participants. Such schemes have rarely been fair and should not be confused with a forkdrop.

How did Evrmore’s Forkdrop work? #

-A snapshot of the Ravencoin blockchain was taken at block 2,510,000 on 2022-10-25 02:47:20-UTC.

-A list of the 50,000 addresses with the highest RVN balances was extracted. It is available for inspection at https://github.com/hans-schmidt/Ravencoin/releases/download/v4.6.2snapshot/snapshot_2510000_top50k.txt

• You can check there to verify that your address is on the list.
• The 50K cut-off included all addresses containing at least 2,673.14 RVN.
• Of the outstanding supply of RVN, 99.21% were included in the top 50K addresses (included all burned and lost RVN)!
• Note that a wallet balance and an address balance are not the same thing. A wallet usually has its balance divided into many addresses.

That list of RVN addresses was translated to EVR addresses and used as an “airdrop” at the genesis of Evrmore mining. So holders of RVN at the time of the snapshot were granted an equal number of EVR when Evrmore started. Ravencoin assets were not copied.

For practical reasons of performance and security, only the 50,000 most valuable Ravencoin addresses were eligible for the forkdrop.

-Both (and only) P2PKH and P2SH RVN addresses were eligible for the forkdrop. Of course the RVN had to be on-chain at the time of the snapshot (not deposited off-chain at a custodial exchange)

-The forkdrop was built into the Evrmore genesis block when mining began at chain launch time.

• If an Evrmore wallet is created using the same 12-word seed which was used for a Ravencoin wallet at the snapshot height, then the EVR forkdrop balance will appear automatically immediately when the Evrmore wallet is created (unless you have generated more than 1000 addresses from your seed, in which case you will need to prompt EVR core to gen more addresses)

-Forkdropped EVR will need to be spent to a new address within 60 days (actually 60 x 60 x 24 blocks) after the Evrmore genesis block. This is expected to happen at roughly 2022-12-29 19:07-UTC

• Forkdropped EVR which have not been moved by that chain height will expire, effectively burning them. This will remove EVR from the supply which were created by the forkdrop but represented burned, lost, or disinterested RVN. Technically stated: the gensis block UTXO must be spent before block 86,400.

What is Evrmore’s Mining Algorithm ? #

-Evrmore uses EvrProgPow, a Programmable Proof of Work algorithm. It is essentially identical to Ravencoin’s KawPowHash but with a starting DAG size of 3GB and an EPOCH length of 12000 blocks.

ETHASH was orignally designed for an EPOCH length of about a week. Making it too short can affect the ASIC-resistance. A comparison of EPOCH lengths:

	EVR: 12000 blocks at   60sec/blk = 8.3 days
	ETC: 60000 blocks at   60sec/blk = 9.2 days
	RVN:  7500 blocks at 13.3sec/blk = 5.2 days

This will result in the following DAG size schedule: (Assuming Evrmore genesis block in Oct 2022)

			3GB		4GB			5GB			6GB			8GB
	EVR:	now		09/2025	 	08/2028		07/2031	 	05/2037
	ETC:	now		08/2025		11/2028		01/2032		06/2038
	RVN:	now		06/2023	 	04/2025		02/2027		10/2030

-The total number of EVR which will ever be issued is < 21 billion

-The total number of EVR in circulation will be substantially less than that amount. That number depends on how many forkdrop EVR burn due to expiration 60 days after genesis, as well as how many EVR are burned over time for asset operation fees.

How much are Miners being Paid for Mining Evrmore? #

-Starting with the first Evrmore block, every new block mined emits a total coinbase subsidy of 2778 EVR plus the transaction fees for that block. Of that amount, the miner can keep 90%, and 10% must be paid to one of the approved addresses of the miner development fund. For a block with no transaction fees, 2500.2 EVR can be kept by the miner and 277.8 EVR must be paid to one of the approved addresses of the miner development fund. The miner development fund will support development of Evrmore core and related code as decided by the Evrmore Foundation.

-The coinbase subsidy will be reduced in half after every SubsidyHalvingInterval. Evrmore’s SubsidyHalvingInterval will be 1648776 blocks which is approximately every 3.137 years. This number was calculated to guarantee <21 billion max EVR.

When did Evrmore mining launch? #

-Evrmore block #1 was mined 2022-10-31 15:03:40-UTC

I don’t agree with something about Evrmore. What prevents me from just porting Evrmore new feature code back to Ravencoin? #

-Absolutely Nothing! Evrmore is built on the Ravencoin codebase for the benefit of the Ravencoin community. We think that there are some features which make more sense on Ravencoin and others which make more sense on Evrmore. But if Evrmore adds new code which Ravencoin wants- Please! Help yourselves! It’s open source!