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Date: Mon, 31 Mar 2025 14:23:59 -0700 (PDT)
From: Sanket Kanjalkar <sanket1729@gmail.com>
To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
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Subject: Re: [bitcoindev] Does anyone still need testnet3?
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Hi Sjors,=20
Thanks for asking. Block/Cashapp relies on testnet3 and can't migrate to=20
testnet4 mostly because of lack of lightning LND peers.
I don't think there are any LND Lightning peers on testnet4. We=20
(Block/Cashapp lightning) use LDK for Lightning, but most of our peers run=
=20
LND. LND support for testnet4 was just merged=20
<https://github.com/lightningnetwork/lnd/pull/9620>, so it=E2=80=99ll likel=
y take=20
time for the LND community to update node infrastructure.
We want to catch peering, business logic and lightning implementations=20
interoperability issues in testnet. Even though LDK supports testnet4,=20
switching now isn=E2=80=99t viable for us until our mainnet LND peers migra=
te.=20
Thanks,
Sanket
--=20
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<div style=3D"color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-s=
erif; font-size: small;">Hi Sjors,=C2=A0<br /><p>Thanks for asking. Block/C=
ashapp relies on testnet3 and can't migrate to testnet4 mostly because of l=
ack of lightning LND peers.<br />I don't think there are any LND Lightning =
peers=C2=A0on testnet4. We (Block/Cashapp lightning) use=C2=A0LDK for Light=
ning, but most of our peers run LND. LND support for testnet4 was just=C2=
=A0<a href=3D"https://github.com/lightningnetwork/lnd/pull/9620" target=3D"=
_blank" style=3D"color: rgb(17, 85, 204);">merged</a>, so it=E2=80=99ll lik=
ely take time for the LND community to update node infrastructure.<br />We =
want to catch peering, business logic and lightning implementations interop=
erability issues in testnet. Even though LDK supports testnet4, switching n=
ow isn=E2=80=99t viable for us=C2=A0until our mainnet LND peers migrate.=C2=
=A0</p></div><span style=3D"color: rgb(34, 34, 34); font-family: Arial, Hel=
vetica, sans-serif; font-size: small;">Thanks,</span><br style=3D"color: rg=
b(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: small;=
" /><span style=3D"color: rgb(34, 34, 34); font-family: Arial, Helvetica, s=
ans-serif; font-size: small;">Sanket</span>
<p></p>
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