<p>Ok I figured it out, BLS signatures could do indexed key aggregation with m-n signatures</p>

CC BY-SA 4.0
2022-10-03T11:25:00.390Z
BLS signatures would need to be activated on Bitcoin mainnet (or a sidechain), they currently aren't available on mainnet. MuSig2 uses Schnorr and so is available on Bitcoin mainnet today.
Michael Folkson
CC BY-SA 4.0
2022-10-01T03:32:11.317Z
2022-10-01T03:32:11.317Z
andre
<p>I have an idea and would like to know if current or future technology can allow it :</p>
<p>Assume 100 people with index i
each people has secret Ri
Secrets Ri are combined via an abstract mechanism to produce a public root address P0
everybody from Root address P0 and index i can compute address Pi
Only the ith people can spend from Pi via his secret Ri
assume a mechanism to aggregate signatures Si</p>
<p>So that a 100 people spend to a business investment address for example could use only 1 input address and 1 signature saving 99 signatures and 99 input addresses.</p>
<p>Is it feasible ? How hard would it be to implement on bitcoin ? Can we do that with Schnorr Signatures ?</p>

<scalability><cross-input-signature-aggregation>
one address multiple inputs one signature scheme
andre
# one address multiple inputs one signature scheme

(Asked by: username_0 on 2022-09-22)

I have an idea and would like to know if current or future technology can allow it :

Assume 100 people with index i
each people has secret Ri
Secrets Ri are combined via an abstract mechanism to produce a public root address P0
everybody from Root address P0 and index i can compute address Pi
Only the ith people can spend from Pi via his secret Ri
assume a mechanism to aggregate signatures Si

So that a 100 people spend to a business investment address for example could use only 1 input address and 1 signature saving 99 signatures and 99 input addresses.

Is it feasible ? How hard would it be to implement on bitcoin ? Can we do that with Schnorr Signatures ?

**Tags:** scalability, cross-input-signature-aggregation


---

## 1 answers

### Answer by username_0 on 2022-10-01. Score: 0 | Accepted answer

Ok I figured it out, BLS signatures could do indexed key aggregation with m-n signatures

> **Comments:**
> **username_1**: BLS signatures would need to be activated on Bitcoin mainnet (or a sidechain), they currently aren't available on mainnet. MuSig2 uses Schnorr and so is available on Bitcoin mainnet today.  

---

