Bitcoin Dev Archive Topics

Privacy: CoinJoin, stealth addresses, silent payments

Bitcoin's ledger is public, so privacy is a matter of what the chain does not reveal. CoinJoin (2013), stealth addresses and payment codes (2014), PayJoin, CoinSwap and silent payments (BIP 352) all started as list threads, as did the arguments against coin blacklists.

171 threads and 1,365 messages, 28 Jul 2013 to 8 Oct 2026.

The threads, in order

Listed by the date of each thread's first message.

2013 4 threads

28 Jul 2013
Opcode whitelist for P2SH? John Dillon
5 messages
22 Nov 2013
bitcoind: whitelist nodes, to prevent them from being banned Jeff Garzik
2 messages
22 Nov 2013
bitcoind: whitelist nodes against banning Jeff Garzik
5 messages
12 Dec 2013
Merge avoidance and P2P connection encryption Mike Hearn
9 messages

2014 16 threads

3 Jan 2014
An idea for alternative payment scheme Nadav Ivgi
6 messages
6 Jan 2014
Privacy and blockchain data Peter Todd
3 messages
6 Jan 2014
Stealth Addresses Peter Todd
88 messages
12 Jan 2014
Bitcoin strengthening, giving, more - Re: Stealth Addresses Odinn Cyberguerrilla
1 message
16 Jan 2014
Bait for reusable addresses Greg Maxwell
14 messages
25 Mar 2014
Privacy-Protecting Proof of Reserves without the Moon-Math and without the backup angst Peter Todd
1 message
9 May 2014
ECDH in the payment protocol Mike Hearn
14 messages
17 Jun 2014
CoinJoin bounty fund question Odinn Cyberguerrilla
3 messages
15 Jul 2014
Bitcoin address TTL & key expiration? Jeff Garzik
16 messages
6 Aug 2014
CoinShuffle: decentralized CoinJoin without trusted third parties Tim Ruffing
10 messages
6 Aug 2014
Payment ID #'s for Stealth Addresses Peter Todd
1 message
3 Oct 2014
bitcoinj 0.12 Mike Hearn
6 messages
11 Oct 2014
Distributed anonymous bitcoin client using your friendly government postal service Naveen Garg
1 message
26 Nov 2014
Deanonymisation of clients in Bitcoin P2P network paper Jean-Paul Kogelman
18 messages
27 Nov 2014
BIP 65 and OP_CHECKLOCKTIMEVERIFY inquiry... Richard Moore
5 messages
4 Dec 2014
Serialised P2SH HD chains Luke Dashjr
8 messages

2015 14 threads

20 Jan 2015
Request for Comment: Bitcoin Wallet Privacy Ratings Criteria Kristov Atlas
1 message
22 Jan 2015
Ensuring security of funds and preserving anonymity when using Bitcoin for e-commerce Jonathan Brown
1 message
4 Feb 2015
determining change addresses using the least significant digits Isidor Zeuner
8 messages
20 Feb 2015
bloom filtering, privacy Adam Back
19 messages
25 Mar 2015
Address Expiration to Prevent Reuse Tom Harding
17 messages
24 Apr 2015
Reusable payment codes Justus Ranvier
26 messages
18 May 2015
Open Bitcoin Privacy Project Spring 2015 Report Justus Ranvier
4 messages
19 Jun 2015
improving development model (Re: Concerns Regarding Threats by a Developer to Remove Commit Access from Other Developers Adam Back
10 messages
22 Jul 2015
Making Electrum more anonymous Thomas Voegtlin
16 messages
7 Aug 2015
Open Bitcoin Privacy Protect Privacy Questionnaire, Mid-Year 2015 report wei
4 messages
18 Aug 2015
Bitcoin XTs Tor IP blacklist downloading system has significant privacy leaks. F L
3 messages
19 Aug 2015
Bitcoin XTs Tor IP blacklist downloading system has significant privacy leaks. Christophe Biocca
6 messages
12 Sep 2015
Stealth Address Idea (special-less) Richard Moore
1 message
24 Nov 2015
OP_CHECKWILDCARDSIGVERIFY or "Wildcard Inputs" or "Coalescing Transactions" Chris Priest
11 messages

2016 8 threads

6 Jan 2016
Confidential Transactions as a soft fork (using segwit) Felix Weis
1 message
9 Feb 2016
Question regarding Confidential Transactions Henning Kopp
5 messages
10 Feb 2016
RFC for BIP: Best Practices for Heterogeneous Input Script Transactions Kristov Atlas
4 messages
29 Apr 2016
segwit subsidy and multi-sender (coinjoin) transactions Kristov Atlas
2 messages
1 May 2016
segwit subsidy and multi-sender (coinjoin) transactions Gregory Maxwell
1 message
26 May 2016
BIP Number Request: Open Asset Nicolas Dorier
10 messages
22 Jun 2016
Closed Seal Sets and Truth Lists for Better Privacy and Censorship Resistance Peter Todd
1 message
3 Aug 2016
Mimblewimble: non-interactive coinjoin, signature aggregation and confidential transactions Bryan Bishop
1 message

2017 6 threads

4 Apr 2017
Extension block proposal by Jeffrey et al Luke Dashjr
13 messages
4 May 2017
Combining SPV and Stealth addresses Henning Kopp
3 messages
6 Jun 2017
Replay attacks make BIP148 and BIP149 untennable Tao Effect
20 messages
12 Jun 2017
BIP proposal - Dandelion: Privacy Preserving Transaction Propagation Andrew Miller
3 messages
30 Aug 2017
ZeroLink Fungibility Framework -- Request for Discussion Adam Ficsor
1 message
14 Nov 2017
Updates on Confidential Transactions efficiency Gregory Maxwell
6 messages

2018 13 threads

22 Jan 2018
Blockchain Voluntary Fork (Split) Proposal (Chaofan Li) Ilan Oh
8 messages
23 Jan 2018
Taproot: Privacy preserving switchable scripting Gregory Maxwell
25 messages
28 Feb 2018
Simple lock/unlock mechanism Karl-Johan Alm
6 messages
18 Mar 2018
feature: Enhance privacy by change obfuscation LORD HIS EXCELLENCY JAMES HRMH
5 messages
30 Apr 2018
BIP sighash_noinput Christian Decker
34 messages
10 May 2018
MAST/Schnorr related soft-forks Anthony Towns
4 messages
10 May 2018
BIP proposal - Dandelion: Privacy Preserving Transaction Propagation Bradley Denby
9 messages
30 Aug 2018
bustapay BIP :: a practical sender/receiver coinjoin protocol rhavar
15 messages
1 Sep 2018
Guiding transaction fees towards a more censorship resistant outcome Ruben Somsen
3 messages
6 Nov 2018
draft proposal: change forwarding (improved fungibility through wallet interoperability) Yuval Kogman
3 messages
13 Dec 2018
Safer NOINPUT with output tagging Johnson Lau
29 messages
27 Dec 2018
Create a BIP to implement Confidential Transactions in Bitcoin Core Kenshiro []
1 message
28 Dec 2018
Create a BIP to implement Confidential Transactions in Bitcoin Core SomberNight
3 messages

2019 11 threads

8 Feb 2019
Implementing Confidential Transactions in extension blocks Kenshiro []
6 messages
23 Feb 2019
Privacy literature review Chris Belcher
2 messages
18 Mar 2019
Payjoin privacy with the receiver of the transaction Kenshiro []
5 messages
22 Apr 2019
Payjoin2swap: Enabling Payjoin Without Merchant Purchases ZmnSCPxj
2 messages
22 Apr 2019
CoinJoin Jigsaw Ryan Perkins
1 message
4 Jun 2019
Formalizing Blind Statechains as a minimalistic blind signing server Ruben Somsen
7 messages
19 Jul 2019
PubRef - Script OP Code For Public Data References Mike Brooks
13 messages
25 Jul 2019
Improving JoinMarket's resistance to sybil attacks using fidelity bonds Chris Belcher
31 messages
19 Aug 2019
Miniscript Pieter Wuille
3 messages
1 Sep 2019
Draft BIP for SNICKER AdamISZ
10 messages
27 Dec 2019
Non-equal value CoinJoins. Opinions. Adam Ficsor
9 messages

2020 21 threads

15 Jan 2020
***UNCHECKED*** Wormhole: Sending and receiving bitcoin anonymously Max Hillebrand
2 messages
21 Feb 2020
LN & Coinjoin, a Great Tx Format Wedding Antoine Riard
8 messages
22 Apr 2020
(Semi)Traceless 2-party coinjoin off-chain protocol using schnorr signatures German Luna
13 messages
29 Apr 2020
Sorting outputs of a transaction in alphabetic order to protect privacy SatoshiSingh
2 messages
29 Apr 2020
BIP-341: Committing to all scriptPubKeys in the signature message Andrew Kozlik
13 messages
11 May 2020
SAS: Succinct Atomic Swap Ruben Somsen
20 messages
16 May 2020
BIP Number request for a simple payjoin proposal Nicolas Dorier
1 message
24 May 2020
Post-mix(coinjoin) usage with multisig and cpfp in bitcoin core wallet Prayank
6 messages
25 May 2020
Design for a CoinSwap implementation for massively improving Bitcoin privacy and fungibility Chris Belcher
22 messages
10 Jun 2020
Question about PayJoin effectiveness Mr. Lee Chiffre
4 messages
10 Jun 2020
Tainting, CoinJoin, PayJoin, CoinSwap Adam Ficsor
6 messages
11 Jun 2020
CoinPool, exploring generic payment pools for Fun and Privacy Antoine Riard
8 messages
11 Jun 2020
Hiding CoinSwap Makers Among Custodial Services ZmnSCPxj
5 messages
11 Jun 2020
WabiSabi: a building block for coordinated CoinJoins Yuval Kogman
1 message
12 Jun 2020
WabiSabi Inside Batched CoinSwap ZmnSCPxj
2 messages
11 Aug 2020
Detailed protocol design for routed multi-transaction CoinSwap Chris Belcher
24 messages
25 Aug 2020
New tipe of outputs that saves space and give more privacy Jule.Adka
2 messages
13 Sep 2020
Statechain coinswap: assigning blame for failure in a two-stage transfer protocol. Tom Trevethan
9 messages
3 Oct 2020
A thought experiment on bitcoin for payroll privacy Mr. Lee Chiffre
7 messages
23 Nov 2020
Bulletin boards without selective censorability for bitcoin fungibility markets AdamISZ
4 messages
30 Nov 2020
Out-of-band transaction fees Sebastian Geisler
6 messages

2021 9 threads

16 Jan 2021
PayJoin adoption Chris Belcher
5 messages
17 Feb 2021
Teleport Transactions: A CoinSwap implementation for Bitcoin Chris Belcher
2 messages
24 Feb 2021
Taproot NACK LORD HIS EXCELLENCY JAMES HRMH
36 messages
20 Apr 2021
Motivating Address type for OP_RETURN Jeremy Rubin
7 messages
26 May 2021
Wallet fingerprinting and other privacy issues in Bitcoin Core Prayank
1 message
10 Jun 2021
BIP proposal: Anti-fee-sniping protection with nSequence in taproot transactions to improve privacy for off-chain protocols Chris Belcher
4 messages
16 Jun 2021
Boost Bitcoin circulation, Million Transactions Per Second with stronger privacy raymo
41 messages
20 Jul 2021
Multisig Enhanced Privacy Scheme Michael Flaxman
2 messages
23 Jul 2021
Bitcoin Privacy Week/Month Prayank
1 message

2022 26 threads

23 Feb 2022
Draft-BIP: Ordinal Numbers Casey Rodarmor
15 messages
28 Feb 2022
Teleport: a CoinSwap implementation alpha release, provides invisible private transactions Chris Belcher
1 message
28 Feb 2022
Decentralized BIP 47 payment code directory Prayank
3 messages
1 Mar 2022
Wasabi Wallet 2.0 Testnet Release Max Hillebrand
4 messages
28 Mar 2022
Silent Payments – Non-interactive private payments with no on-chain overhead Ruben Somsen
6 messages
6 Apr 2022
Client side coinjoin amount organization with WabiSabi Max Hillebrand
2 messages
24 May 2022
Silent Payments – Non-interactive private payments with no on-chain overhead woltx
3 messages
11 Jun 2022
BIP47 Prague Discussion Ruben Somsen
2 messages
12 Jun 2022
RIDDLE: Lightweight anti-Sybil with anonymity in Bitcoin AdamISZ
3 messages
14 Jun 2022
Playing with full-rbf peers for fun and L2s security Antoine Riard
27 messages
19 Jun 2022
Mempool and Privacy alicexbt
1 message
27 Jun 2022
Private Payments Alfred Hodler
12 messages
14 Jul 2022
Full Disclosure: Denial of Service in STONEWALLx2 (p2p coinjoin) alicexbt
2 messages
5 Aug 2022
P2P trading replacement transactions alicexbt
5 messages
17 Aug 2022
New Silent Payment version woltx
3 messages
20 Aug 2022
joinstr: coinjoin implementation using nostr alicexbt
5 messages
22 Sep 2022
RFC for a BIP32 recurrent address derivation scheme El_Hoy
3 messages
29 Sep 2022
Trustless Address Server – Outsourcing handing out addresses to prevent address reuse Ruben Somsen
8 messages
29 Sep 2022
Third version of Silent Payment implementation woltx
3 messages
1 Oct 2022
Trustless Address Server ? Outsourcing handing out addresses Peter
2 messages
11 Oct 2022
Silent Payment v4 (coinjoin support added) woltx
4 messages
26 Oct 2022
On mempool policy consistency Anthony Towns
33 messages
2 Nov 2022
Solving Multi-Party Flows Pinning with Opt-in Full-RBF Spent-nVersion Signaling Antoine Riard
6 messages
2 Nov 2022
Preventing/detecting pinning of jointly funded txs Anthony Towns
4 messages
8 Nov 2022
P2EP Lightning PayJoin Dan Gould
1 message
5 Dec 2022
bitcoin-dev Digest, Vol 91, Issue 5 John Carvalho
2 messages

2023 21 threads

9 Jan 2023
OP_VAULT: a new vault proposal James O'Beirne
16 messages
9 Jan 2023
Why Full-RBF Makes DoS Attacks on Multiparty Protocols Significantly More Expensive Peter Todd
11 messages
22 Jan 2023
Serverless Payjoin Dan Gould
2 messages
7 Feb 2023
Unenforceable fee obligations in multiparty protocols with Taproot inputs Yuval Kogman
18 messages
13 Feb 2023
Testing censorship resistance of bitcoin p2p network alicexbt
10 messages
31 Mar 2023
Bitcoin fungibility and inscribed sats alicexbt
2 messages
10 May 2023
Interactive Payment Batching w/ Payjoin Dan Gould
1 message
18 May 2023
Stake Certificates and Web-of-Stakes: privacy-preserving proving UTXOs attributes in P2P systems Antoine Riard
1 message
22 May 2023
Ark: An Alternative Privacy-preserving Second Layer Solution Burak Keceli
18 messages
22 May 2023
Coinjoin with less steps using ALL|ANYONECANPAY alicexbt
5 messages
1 Jun 2023
Scaling and anonymizing Bitcoin at layer 1 with client-side validation Dr Maxim Orlovsky
5 messages
2 Jun 2023
Standardisation of an unstructured taproot annex Joost Jager
30 messages
5 Jun 2023
BIP for Silent Payments josibake
1 message
10 Jun 2023
postr: p2n payjoin using nostr alicexbt
2 messages
11 Jun 2023
Ark: An Alternative Privacy-preserving Second Layer Solution moonsettler
1 message
6 Jul 2023
Denial of Service using Package Relay alicexbt
2 messages
3 Aug 2023
BIP352: Silent Payments josibake
1 message
4 Aug 2023
BIP-352 Silent Payments addresses should have an expiration time Peter Todd
9 messages
9 Aug 2023
BIP for Serverless Payjoin Dan Gould
6 messages
11 Aug 2023
BIP for Serverless Payjoin (AdamISZ) Dan Gould
5 messages
16 Oct 2023
Goldfish: Spoofing wallet fingerprints to improve privacy alicexbt
1 message

2024 6 threads

17 May 2024
Analysis of Replacement Cycling Attacks Risks on L2s (beyond LN) Antoine Riard
3 messages
14 Jul 2024
Octojoin: Payjoin with no interaction between sender and recipient /dev /fd0
1 message
17 Oct 2024
BIP: Sending Silent Payments in PSBTs Andrew Toth
1 message
20 Oct 2024
Redefine packages to discourage address reuse /dev /fd0
6 messages
21 Dec 2024
Reiterating centralized coinjoin (Wasabi & Samourai) deanonymization attacks Yuval Kogman
18 messages
21 Dec 2024
Censorship and Privacy in Chaumian ecash implementations /dev /fd0
3 messages

2025 8 threads

16 Feb 2025
Rust library for joinstr (coinjoin implementation) /dev /fd0
1 message
8 Mar 2025
Proposal: Unlocking Dust UTXOs as Miner Transaction Fees Nighttime Satoshi
6 messages
25 Mar 2025
UTXO probing attack using payjoin /dev /fd0
9 messages
4 Apr 2025
Post Quantum Signatures and Scaling Bitcoin Ethan Heilman
8 messages
27 May 2025
Sybil resistance in different coinjoin implementations /dev /fd0
4 messages
2 Jul 2025
Make pathological transactions with more than 2500 legacy signature operations non-standard Antoine Poinsot
8 messages
1 Nov 2025
OP_CIV - Post-Quantum Signature Aggregation Tadge Dryja
5 messages
4 Dec 2025
Add sp() output descriptor format for BIP352 Craig Raw
8 messages

2026 8 threads

4 Feb 2026
BIP-352: Limiting the number of per-group recipients (K_max) Sebastian Falbesoner
4 messages
15 Apr 2026
PQC - What is our Goal, Even? Matt Corallo
22 messages
3 Jun 2026
Aligning privacy incentives in P2MR conduition
20 messages
11 Jun 2026
Removal of BIP 125 RBF signalling in wallet transactions rkrux
6 messages
20 Jun 2026
State of the transaction privacy work in Bitcoin Nikita Karetnikov
1 message
18 Jul 2026
BIP draft: CISA for Taproot Key Path Spends Fabian
8 messages
2 Sep 2026
Silent payments light clients: measurements and index commitments Rob Segers
1 message
30 Sep 2026
Flame: confidential transactions with Bitcoin proof-of-burn consensus Oleg Andreev OOO
3 messages