Halvings

the schedule, in full

Zcash halves about every four years. Byhash runs the same curve every 14 days, about 104 times faster. Each epoch mines half of what the reserve still holds, so the reserve never runs out and never stops shrinking.

Byhash, live

status: the Miner is not deployed yet
epoch: —
next halving: —
reserve unmined: —
reward per block: —
difficulty: —

Zcash, live from mainnet

ZEC: —
height: —
last halving: block 2,726,400
next halving: block 4,406,400
block time: 75 seconds · 1,680,000 blocks per halving
supply: 21,000,000 ZEC, ever

Epoch by epoch

The share column is what the epoch mines of the reserve as it stood at the start of that epoch’s halving chain. Dates appear once the Miner has started; until then the table counts from day 0. In the time Zcash does one halving, Byhash does 104.

epoch	day	mined this epoch	mined in total	reserve left	Zcash equivalent
0	day 0	50%	50%	50%	year 0
1	day 14	25%	75%	25%	year 4
2	day 28	12.5%	87.5%	12.5%	year 8
3	day 42	6.25%	93.75%	6.25%	year 12
4	day 56	3.125%	96.875%	3.125%	year 16
5	day 70	1.5625%	98.4375%	1.5625%	year 20
6	day 84	0.7813%	99.2188%	0.7813%	year 24
7	day 98	0.3906%	99.6094%	0.3906%	year 28
8	day 112	0.1953%	99.8047%	0.1953%	year 32
9	day 126	0.0977%	99.9023%	0.0977%	year 36
10	day 140	0.0488%	99.9512%	0.0488%	year 40
11	day 154	0.0244%	99.9756%	0.0244%	year 44
12	day 168	0.0122%	99.9878%	0.0122%	year 48
13	day 182	0.0061%	99.9939%	0.0061%	year 52
14	day 196	0.0031%	99.9969%	0.0031%	year 56
15	day 210	0.0015%	99.9985%	0.0015%	year 60

The arithmetic of one rig

Not a forecast. This is the division the Miner does, with numbers you type. Difficulty and reserve fill from the Miner once it is deployed; before that they are examples.

your stake ($BYHASH)

no lock1×3 days1.2×14 days1.5×60 days2×

difficulty before you (H)reserve at epoch 0 ($BYHASH)

your hashrate: 15,000 H
your share: 1.4778%
epoch 0 mines: 50,000,000 $BYHASH in 14 days
your cut, epoch 0: 738,916.26 $BYHASH · 52,779.73 a day
your cut, epoch 1: 369,458.13 $BYHASH
your cut, epoch 2: 184,729.06 $BYHASH

The share moves the moment anyone stakes or unstakes. ZEC is separate: it is credited by hashrate share over three days after each announcement, and only when there is an announcement.