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To: Davidson Souza <davidson.lucas.souza@outlook.com>,
 Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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Subject: Re: [bitcoin-dev] Announcing Libforesta
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Hi, delighted to see an implementation of Utreexo.

I will just have a few questions about your implementation.

1) Is this implementation able to start other nodes whether they are on =
the reference implementation or on Floresta?

2) Is it possible to switch from Bitcoin Core to Floresta without =
causing a new IDB?

3) Is Floresta backward compatible with Bitcoin Core's RPC commands?

> Le 31 juil. 2023 =C3=A0 19:47, Davidson Souza via bitcoin-dev =
<bitcoin-dev@lists.linuxfoundation.org> a =C3=A9crit :
>=20
> Hi, list. My name is Davidson, and I=E2=80=99m thrilled to share =
`libfloresta` with the Bitcoin devs mailing list!
>=20
> This is a derivate of a project I=E2=80=99ve been developing for a few =
months, called `Floresta` (Portuguese for forest). An Utreexo powered, =
Fully-Validating Bitcoin Full node with integrated watch-only wallet and =
Electrum Server, meant to be a compact, simple, and ready to use full =
node for end users.=20
>=20
> After some feedbacks and thoughts, I=E2=80=99ve decided to turn it =
into a series of reusable libs that can be used in other applications in =
a straightforward way. The main goal here is low-power devices, like SBC =
and smartphones, but can be used in any environment. To achieve that, =
I=E2=80=99m writing the main logic in Rust and will generate bindings to =
the original code and compiling to WASM, allowing it to run virtually =
anywhere.
>=20
> The project is in an early stage, but I=E2=80=99m using it on signet =
for a while now with no problems. Mainnet support is almost ready, but =
we need to solve some performance issues with bridge nodes and set some =
up, so you can have utreexo peers.
>=20
> The project is available on [my =
GitHub](https://github.com/Davidson-Souza/Floresta) and I wrote an =
initial [blogpost](https://blog.dlsouza.lol/2023/07/07/libfloresta.html) =
explaining how to use it (in Rust). I=E2=80=99ll write more as the =
project matures, and I get it running on other platforms. Any feedback =
is welcome!
>=20
> ## Consensus
>=20
> I know that alternative implementations is a spicy subject in Bitcoin =
land, but this project **does not** reimplement the Bitcoin Consensus =
machine from scratch. I=E2=80=99m using `libbitcoinconsenus` and plan to =
use the full `libbitcoinkernel` in the future. While this doesn=E2=80=99t =
guarantee consistency, it minimizes misimplementations leading to =
splits.
>=20
> I=E2=80=99m also making an extra effort into cross-test against =
Bitcoin Core to find any inconsistencies before it causes any trouble.
>=20
> ## Acknowledges
>=20
> A special thanks to [Vinteum](https://vinteum.org/) for supporting my =
work with utreexo and Floresta.
>=20
> Best regards,
> Davidson Souza.
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org =
<mailto:bitcoin-dev@lists.linuxfoundation.org>
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev


--Apple-Mail=_B33AA37B-F0B7-4AB3-9C62-DAA0005E8149
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;"><meta =
http-equiv=3D"content-type" content=3D"text/html; charset=3Dutf-8"><div =
style=3D"overflow-wrap: break-word; -webkit-nbsp-mode: space; =
line-break: after-white-space;">Hi, delighted to see an implementation =
of Utreexo.<div><br></div><div>I will just have a few questions about =
your implementation.</div><div><br></div><div>1) Is this implementation =
able to start other nodes whether they are on the reference =
implementation or on Floresta?</div><div><br></div><div>2) Is it =
possible to switch from Bitcoin Core to Floresta without causing a new =
IDB?</div><div><br></div><div>3) Is Floresta backward compatible with =
Bitcoin Core's RPC commands?</div><div><br><div><blockquote =
type=3D"cite"><div>Le 31 juil. 2023 =C3=A0 19:47, Davidson Souza via =
bitcoin-dev &lt;bitcoin-dev@lists.linuxfoundation.org&gt; a =C3=A9crit =
:</div><br class=3D"Apple-interchange-newline"><div><meta =
charset=3D"UTF-8"><div style=3D"margin-top: 0pt; margin-bottom: 0pt; =
caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; line-height: =
1.38;"><span style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;">Hi, list. My name is Davidson, and I=E2=80=99m =
thrilled to share `libfloresta` with the Bitcoin devs mailing =
list!</span></div><div style=3D"caret-color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: 400; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none;"><span style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;"><br></span></div><div class=3D"elementToProof" =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;"><span =
style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;">This is a derivate of a project I=E2=80=99ve =
been developing for a few months, called `Floresta` (Portuguese for =
forest). An Utreexo powered, Fully-Validating Bitcoin Full node with =
integrated watch-only wallet and Electrum Server, meant to be a compact, =
simple, and ready to use full node for end users.<span =
class=3D"Apple-converted-space">&nbsp;</span><br></span></div><div =
class=3D"elementToProof" style=3D"caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;"><br></span></div><div =
class=3D"elementToProof" style=3D"caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;">After some feedbacks and =
thoughts, I=E2=80=99ve decided to turn it into a series of reusable libs =
that can be used in other applications in a straightforward way. The =
main goal here is low-power devices, like SBC and smartphones, but can =
be used in any environment. To achieve that, I=E2=80=99m writing the =
main logic in Rust and will generate bindings to the original code and =
compiling to WASM, allowing it to run virtually =
anywhere.</span></div><div class=3D"elementToProof" style=3D"caret-color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant-caps: normal; font-weight: 400; letter-spacing: =
normal; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;"><br></span></div><div =
style=3D"margin-top: 0pt; margin-bottom: 0pt; caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; line-height: 1.38;"><span style=3D"font-size: =
11pt; font-family: Arial, sans-serif; text-decoration: none;"><span =
class=3D"Apple-tab-span"></span></span><span style=3D"font-size: 11pt; =
font-family: Arial, sans-serif; text-decoration: none;">The project is =
in an early stage, but I=E2=80=99m using it on signet for a while now =
with no problems. Mainnet support is almost ready, but we need to solve =
some performance issues with bridge nodes and set some up, so you can =
have utreexo peers.</span></div><div style=3D"margin-top: 0pt; =
margin-bottom: 0pt; caret-color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: 400; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none; line-height: 1.38;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;"><br></span></div><div =
style=3D"margin-top: 0pt; margin-bottom: 0pt; caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; line-height: 1.38;"><span style=3D"font-size: =
11pt; font-family: Arial, sans-serif; text-decoration: none;"><span =
class=3D"Apple-tab-span"></span></span><span style=3D"font-size: 11pt; =
font-family: Arial, sans-serif; text-decoration: none;">The project is =
available on [my GitHub](</span><a =
href=3D"https://github.com/Davidson-Souza/Floresta" =
style=3D"text-decoration: none;"><span style=3D"font-size: 11pt; =
font-family: Arial, sans-serif; text-decoration: underline; =
text-decoration-skip-ink: none; color: rgb(17, 85, =
204);">https://github.com/Davidson-Souza/Floresta</span></a><span =
style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;">) and I wrote an initial [blogpost](<a =
href=3D"https://blog.dlsouza.lol/2023/07/07/libfloresta.html">https://blog=
.dlsouza.lol/2023/07/07/libfloresta.html</a>) explaining how to use it =
(in Rust). I=E2=80=99ll write more as the project matures, and I get it =
running on other platforms. Any feedback is welcome!</span></div><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;"><div =
style=3D"margin-top: 0pt; margin-bottom: 0pt; caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; line-height: 1.38;"><span style=3D"font-size: =
11pt; font-family: Arial, sans-serif; text-decoration: none;">## =
Consensus</span></div><div style=3D"margin-top: 0pt; margin-bottom: 0pt; =
caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; line-height: =
1.38;"><span style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;"><br></span></div><div style=3D"margin-top: 0pt; =
margin-bottom: 0pt; caret-color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: 400; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none; line-height: 1.38;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;"><span =
class=3D"Apple-tab-span"></span></span><span style=3D"font-size: 11pt; =
font-family: Arial, sans-serif; text-decoration: none;">I know that =
alternative implementations is a spicy subject in Bitcoin land, but this =
project **does not** reimplement the Bitcoin Consensus machine from =
scratch. I=E2=80=99m using `libbitcoinconsenus` and plan to use the full =
`libbitcoinkernel` in the future. While this doesn=E2=80=99t guarantee =
consistency, it minimizes misimplementations leading to =
splits.</span></div><div style=3D"margin-top: 0pt; margin-bottom: 0pt; =
caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; line-height: =
1.38;"><span style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;"><br></span></div><div style=3D"margin-top: 0pt; =
margin-bottom: 0pt; caret-color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: 400; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none; line-height: 1.38;"><span style=3D"font-size: 11pt; font-family: =
Arial, sans-serif; text-decoration: none;"><span =
class=3D"Apple-tab-span"></span></span><span style=3D"font-size: 11pt; =
font-family: Arial, sans-serif; text-decoration: none;">I=E2=80=99m also =
making an extra effort into cross-test against Bitcoin Core to find any =
inconsistencies before it causes any trouble.</span></div><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;"><div =
style=3D"margin-top: 0pt; margin-bottom: 0pt; caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; line-height: 1.38;"><span style=3D"font-size: =
11pt; font-family: Arial, sans-serif; text-decoration: none;">## =
Acknowledges</span></div><br style=3D"caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><div style=3D"margin-top: 0pt; margin-bottom: =
0pt; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; line-height: =
1.38;"><span style=3D"font-size: 11pt; font-family: Arial, sans-serif; =
text-decoration: none;">A special thanks to [Vinteum](<a =
href=3D"https://vinteum.org/">https://vinteum.org/</a>) for supporting =
my work with utreexo and Floresta.</span></div><div style=3D"font-style: =
normal; font-variant-caps: normal; font-weight: 400; letter-spacing: =
normal; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 12pt;"><br></div><div class=3D"elementToProof" =
style=3D"font-style: normal; font-variant-caps: normal; font-weight: =
400; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Best =
regards,</div><div class=3D"elementToProof" style=3D"font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 12pt;">Davidson Souza.<br></div><span =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; float: none; =
display: inline =
!important;">_______________________________________________</span><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;"><span =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; float: none; =
display: inline !important;">bitcoin-dev mailing list</span><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: 400; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;"><a =
href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org" =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: =
0px;">bitcoin-dev@lists.linuxfoundation.org</a><br style=3D"caret-color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant-caps: normal; font-weight: 400; letter-spacing: =
normal; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><a =
href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: 400; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: =
0px;">https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev</a></=
div></blockquote></div><br></div></div></body></html>=

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