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# BTCR Futures
###### tags: `Notes`

## Root Identifier to Transaction, UTXO or Key (or all three)

Transaction: current BTCR
UTXO: script BIP322
Key: ala did:doge which uses did:key

## Off-chain transition to On-Chain

## Sign-to-Contract

This means public keys are not lookupable in a transaction, just provable.
https://blog.eternitywall.com/2018/04/13/sign-to-contract/
http://diyhpl.us/wiki/transcripts/sf-bitcoin-meetup/2019-02-04-threshold-signatures-and-accountability/

## Single Use Seal

RGB uses this for it's L2.

## Orlovsky BIP32 approach to identity keys

https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/018381.html

## BIP 322 Signing &| Proof of Control of UTXO

* Can we do a BIP322 JSON-LD

## Coinswap/join as collaborative initial ID

* https://joinmarket.me/blog/blog/flipping-the-scriptless-script-on-schnorr/
* https://github.com/AdamISZ/CoinSwapCS/issues/47

## Transaction outputs other than #0

## Layer 2 Schemes

* Leveraging Lightning
* RGB protocol

## Coin Change management

My BTCR 0.1 Wallet put the transaction on BIP45 change #7 so that bitcoin wallets would ignore it (they use #0 and #1).

## Blinded Signatures in Schnorr

Chaumian blinded signatures but using Schnorr

https://suredbits.com/schnorr-applications-blind-signatures/

Related: https://eprint.iacr.org/2016/056.pdf

## Tor backed services

Gordian Server / Bitcoin Stantup allows for correlation-resistence of did:btcr services

## Funding DID services with Lightning

##

## BCTR History

* Pre-BTCR: https://github.com/ChristopherA/revocable-self-signed-tls-certificates-hack
* OASIS XDI Strawman https://docs.google.com/document/d/1i-XChGFsuAi-Id85FWXjX6hOWDn9Sq-qe7ARykJgsBI/edit#heading=h.ma7qn0kve8d5
& RWOT #1: Distributed Permanent Identifier Registry
https://github.com/WebOfTrustInfo/rwot1-sf/blob/master/draft-documents/Distributed-Permanent-Identifier-Registry.md
* RWOT #1 DPKI https://nbviewer.jupyter.org/github/WebOfTrustInfo/rebooting-the-web-of-trust/blob/master/final-documents/dpki.pdf
* RWOT #2 Requirements for DIDs https://github.com/WebOfTrustInfo/rwot2-id2020/blob/master/final-documents/requirements-for-dids.pdf
* RWOT #4 Oldest BTCR Spec https://docs.google.com/document/d/15HWtXTDXcvyUjgAqnewPoZKbgSWhl-XiIDas1ip94Hs/edit