# [Main] Homepage Source URL: https://blockstream.com/ Updated: 2026-11-13T20:37:21.000Z --- ## The future of finance, built on bitcoin. We make sure that future belongs to you. ## Blockstream provides full-stack, bitcoin-native solutions that empower individuals, developers, and enterprises to hold their own keys, build on open infrastructure, and run their financial lives on bitcoin. ### Rooted in bitcoin. Everything we build is based on bitcoin, the most secure monetary network in the world. ### Our interoperable tech stack. Lightning, Liquid, and Simplicity carry bitcoin's security into payments, assets, and contracts that are fast, private, and predictable. ### Our solutions. Financial tools that offer more control, less risk, cost, time, and friction. - **Custody and treasury management** - **Trading and tokenization** - **Payments and settlement** - **Contracts and data** *BLOCKSTREAM ENTERPRISE* ## Finance, forward. Custody, tokenization, dedicated blockchains, and data for institutions, under governance your firm controls. - [Explore enterprise products](https://blockstream.com/enterprise) ### Custody Digital asset custody solution for capital markets, under governance your firm controls. ### Tokenization Issue and manage digital assets, with full lifecycle control. ### Enterprise Blockchains Full-stack, modular infrastructure to deploy blockchains for institutions. ### Blockchain Data Fully indexed bitcoin and Liquid data, without the backend hassle. *BLOCKSTREAM CONSUMER* ## Self-custody is the standard. Take control of your bitcoin with Jade hardware. Bring it into your daily life with the Blockstream app. ### Jade Open-source, offline key storage and dedicated hardware. ### Blockstream app Send, receive, and swap on mainnet, Lightning, and Liquid. - [Explore consumer products](https://blockstream.com/consumer) *BLOCKSTREAM CONSULTING* ## Expert guidance for digital asset adoption. We help financial institutions safely navigate digital asset strategy and implementation, and adhere to essential standards. - [Explore consulting services](https://blockstream.com/consulting) ### Build on your existing systems. We design custody and settlement frameworks that integrate with your core banking systems and meet your institution’s standards. ### Ship fast without headaches. Our engineers and domain experts handle the technical complexity of custody, key management, and ongoing monitoring. ### Offload your hardest problems. We apply deep experience in bitcoin, cryptography, and secure infrastructure to solve your operational challenges. *BLOCKSTREAM DEVELOPER* ## Build on the stack we run in production. Open-source nodes, libraries, and APIs for bitcoin, Liquid, and Lightning. - [Explore developer tools](https://blockstream.com/developer) ### Simplicity High-assurance smart contracting. ### Core Lightning Instant bitcoin payments, tailored to your stack. ### Data Feed Price, analyze, and settle with one feed. ### Liquid Bitcoin's financial layer. ### Liquid Wallet Kit Everything Liquid can do, a function call away. ### Simplicity High-assurance smart contracting. ### Core Lightning Instant bitcoin payments, tailored to your stack. ### Data Feed Price, analyze, and settle with one feed. ### Liquid Bitcoin's financial layer. ### Liquid Wallet Kit Everything Liquid can do, a function call away. *BLOCKSTREAM RESEARCH* ## We are bitcoin veterans. Blockstream has pioneered bitcoin development since 2014. ### 2014 — Sidechains We co-authored the paper that introduced sidechains; Liquid has run on it since 2018. [Learn more](https://blockstream.com/sidechains.pdf) ### 2014–2024 — Bitcoin Core contributions and maintainership Blockstream engineers (including Pieter Wuille, Matt Corallo, and Andrew Chow) served as long-time Bitcoin Core maintainers and leading contributors across consensus, wallet architecture, and P2P networking. [Learn more](https://github.com/bitcoin/bitcoin) ### 2014–now — libsecp256k1 maintenance Blockstream engineers have been major contributors to and maintainers of the high-performance secp256k1 library used by Bitcoin Core for signatures, as well as maintaining libsecp256k1-zkp for Liquid. The library itself predates Blockstream. [Learn more](https://github.com/bitcoin-core/secp256k1) ### 2015 — Lightning Rusty Russell built the first Lightning implementation at Blockstream, later Core Lightning, and chaired the BOLTs process that produced the interoperable Lightning specification. [Learn more](https://blog.blockstream.com/rusty-russell-eleven-years-of-lightning-at-blockstream/) ### 2015 — Confidential Transactions We invented them; they have hidden amounts and asset types on Liquid since 2018. [Learn more](https://blog.blockstream.com/en-714/) ### 2015 — OP_CHECKSEQUENCEVERIFY Blockstream co-founder Mark Friedenbach invented the use of sequence numbers for relative locktime and wrote the reference implementation of OP\_CHECKSEQUENCEVERIFY, standardized in BIP 112 and activated on bitcoin in 2016. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0112.mediawiki) ### 2015 — SegWit Co-authored BIP 141, live on bitcoin since 2017. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki) ### 2015 — Versionbits Co-authored BIP 9, the mechanism bitcoin uses to deploy soft forks. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0009.mediawiki) ### 2016 — Compact blocks Authored BIP 152, relaying blocks in every Bitcoin Core node. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0152.mediawiki) ### 2016 — FIBRE Built the fast relay network that sped blocks between mining pools. [Learn more](https://bitcoinfibre.org/) ### 2017 — Bech32 / 2021 Bech32m Pieter Wuille and Greg Maxwell authored BIP 173, introducing the Bech32 address format used for native SegWit; Pieter later designed Bech32m (BIP 350) for Taproot and future witness versions. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki) ### 2017 — PSBT Authored BIP 174, the standard for passing unsigned transactions between wallets. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki) ### 2017 — Confidential Assets Blockstream researchers extended Confidential Transactions to hide not only amounts but also asset types, enabling confidential multi-asset transactions on Elements and Liquid. [Learn more](https://blockstream.com/bitcoin17-final41.pdf) ### 2017 — Blockstream Satellite Launched the first real-time broadcast of bitcoin blocks from satellites. [Learn more](https://blog.blockstream.com/en-announcing-blockstream-satellite/) ### 2017 — Bulletproofs Co-authored the range proofs that keep confidential amounts compact. [Learn more](https://eprint.iacr.org/2017/1066) ### 2017 — Scriptless Scripts and PTLCs Andrew Poelstra pioneered Scriptless Scripts and introduced the Schnorr/adaptor-signature construction underlying Point Time Locked Contracts for Lightning. [Learn more](https://github.com/BlockstreamResearch/scriptless-scripts) ### 2017 — Simplicity Announced the formally verifiable smart-contract language, live on Liquid since 2025. [Learn more](https://blog.blockstream.com/en-simplicity-github/) ### 2018 — MuSig Blockstream researchers co-developed MuSig, introducing secure Schnorr multi-signatures (multisig) with key aggregation so that an n-of-n multisig can appear on-chain as a single public key and signature. [Learn more](https://eprint.iacr.org/2018/068) ### 2018 — Output descriptors Created the standard way wallets describe what they can spend. [Learn more](https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md) ### 2018–2020 — Schnorr and Taproot Blockstream researchers played a central role in designing and specifying bitcoin’s Schnorr signature scheme and Taproot, co-authoring BIP 340 and BIPs 341/342. They activated on bitcoin in 2021. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki) ### 2019 — BIP 324 Co-authored bitcoin’s encrypted peer-to-peer transport protocol. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0324.mediawiki) ### 2019 — Erlay Co-authored the relay protocol that cuts node bandwidth. [Learn more](https://github.com/bitcoin/bips/blob/master/bip-0330.mediawiki) ### 2019 — Miniscript Designed at Blockstream Research; in Bitcoin Core since 2022. [Learn more](https://blog.blockstream.com/miniscript-streamlined-bitcoin-scripting/) ### 2020 — MuSig2 Co-developed the multisig scheme standardized as BIP 327. [Learn more](https://blog.blockstream.com/musig2-is-pending-two-new-bips-introducing-a-new-era-of-multisig-privacy/) ### 2021 — CAT and Schnorr tricks Andrew Poelstra developed the CAT-and-Schnorr construction, showing how OP\_CAT and BIP 340 signatures can emulate CHECKSIGFROMSTACK-like functionality and enable transaction introspection and general-purpose bitcoin covenants. [Learn more](https://www.wpsoftware.net/andrew/blog/cat-and-schnorr-tricks-i.html) ### 2021 — Minimint / Fedimint Eric Sirion developed Minimint (later Fedimint) while supported by Blockstream Research, introducing federated Chaumian e-cash for bitcoin to enable community-custody mints interoperable with the Lightning Network. [Learn more](https://github.com/fedimint/fedimint) ### 2022 — ROAST Blockstream researchers co-developed ROAST, a robust asynchronous wrapper for threshold signature schemes such as FROST that allows honest signers to complete signing despite offline or malicious participants. [Learn more](https://eprint.iacr.org/2022/550) ### 2023 — codex32 Designed a recovery-phrase backup scheme you can verify by hand. [Learn more](https://blog.blockstream.com/codex32-a-shamir-secret-sharing-scheme/) ### 2023 — ProtoGalaxy Liam Eagen and Ariel Gabizon published ProtoGalaxy, an efficient multi-instance folding scheme for recursive arguments and Incremental Verifiable Computation (IVC) without trusted setup or pairings, providing the cryptographic foundation for private client-side validation. [Learn more](https://eprint.iacr.org/2023/1106) ### 2024 — Bulletproofs++ Blockstream Research developed Bulletproofs++, a substantially smaller and faster successor to Bulletproofs and Bulletproofs+ for Confidential Transactions that introduced reciprocal arguments to eliminate surjection proofs. The work was published at EUROCRYPT 2024. [Learn more](https://eprint.iacr.org/2022/510) ### 2024 — BOLT 12 Authored the offers spec, the first new Lightning BOLT since 2017. [Learn more](https://github.com/lightning/bolts/pull/798) ### 2024 — ChillDKG Authored the distributed key generation spec for FROST wallets. [Learn more](https://github.com/BlockstreamResearch/bip-frost-dkg) ### 2024 — Shielded Client-Side Validation Blockstream Research, together with Alpen Labs and ZeroSync, introduced Shielded CSV, combining client-side validation with cryptographic techniques to hide transaction histories while retaining compact on-chain commitments. [Learn more](https://blog.blockstream.com/bitcoins-shielded-csv-protocol-explained/) ### 2024 — ColliderScript Andrew Poelstra co-developed ColliderScript, demonstrating that bitcoin covenants are theoretically possible today without a consensus change, albeit at completely impractical computational cost. [Learn more](https://eprint.iacr.org/2024/1802) ### 2024 — Formal verification of libsecp256k1 modular inversion (safegcd) Russell O’Connor developed machine-checked proofs in Coq verifying the correctness and constant-time execution of the Bernstein–Yang modular inverse algorithm in libsecp256k1. [Learn more](https://blog.blockstream.com/formal-verification-of-the-safegcd-implementation/) ### 2024 — SimplicityHL (formerly Simfony) Russell O’Connor, Christian Lewe, and Sanket Kanjalkar developed the first version of Simfony (later renamed SimplicityHL), a high-level, strongly typed smart-contract language and web IDE that compiles to Simplicity, bridging low-level Simplicity combinators to accessible covenant development. [Learn more](https://github.com/BlockstreamResearch/SimplicityHL) ### 2025 — DahLIAS and cross-input signature aggregation Blockstream Research and Yannick Seurin developed DahLIAS, the first full cross-input signature aggregation scheme for bitcoin’s native secp256k1 curve, producing constant-size aggregate signatures. The work was accepted at EUROCRYPT 2026. [Learn more](https://eprint.iacr.org/2025/692) ### 2025 — Post-quantum security of Taproot commitments Tim Ruffing proved that bitcoin’s Taproot tweaking construction is computationally binding and hiding against quantum adversaries under standard hash assumptions, establishing that Taproot script trees created today can safely host post-quantum spending and recovery paths. [Learn more](https://eprint.iacr.org/2025/1307) ### 2025 — secp256k1lab Blockstream Research released secp256k1lab, a Python implementation of the secp256k1 curve and related cryptographic schemes designed for rapid prototyping, experimentation, and education. [Learn more](https://github.com/secp256k1lab/secp256k1lab) ### 2025 — “Provable Cryptography for Bitcoin” workbook Blockstream Research published an open-source workbook and training curriculum to train Bitcoin Core and ecosystem developers in reduction-based security proofs and provable cryptography. [Learn more](https://github.com/cryptography-camp/workbook) ### 2026 — Post-quantum signatures First post-quantum-signed transactions on a production bitcoin sidechain, on Liquid. [Learn more](https://blog.blockstream.com/blockstream-research-demonstrates-quantum-resistant-transaction-signing-on-liquid-using-simplicity-smart-contracts/) ### 2026 — SHRINCS and OP_CHECKSHRINCS Blockstream Research designed SHRINCS, a compact hash-based post-quantum signature scheme optimized for bitcoin and Liquid. We broadcast what we believe were the first transactions on a production bitcoin sidechain authorized using post-quantum signatures (verifying SHRINCS via Simplicity on Liquid mainnet) and authored a draft BIP proposal for OP\_CHECKSHRINCS on bitcoin. [Learn more](https://blog.blockstream.com/shrincs-324-byte-stateful-post-quantum-signatures-with-static-backups/) ### Blockstream Research explores cryptography and protocol design for bitcoin. Since 2014, we’ve contributed to the primitives the industry runs on. - **Bitcoin.**: Signature and scripting upgrades adopted by the network. - **Liquid.**: Privacy, contract, and settlement features. - **Wallets industry-wide.**: Libraries that ship inside Bitcoin Core and industry-wide wallet software. - **Publications.**: Research accepted at IEEE S&P, CRYPTO, and EUROCRYPT. - [Explore Blockstream Research](https://blockstream.com/research) Founded by Dr. Adam Back, inventor of Hashcash, cited in the bitcoin whitepaper. ## The financial system is moving onto bitcoin. ## Join the new financial frontier. - [Talk to our team](https://blockstream.typeform.com/to/SWKNyzvS?typeform-source=blockstream.com) - [Learn more](https://blockstream.com/about) ## Keep up with Blockstream. *LATEST RESEARCH* ### [Building on Simplicity: what ships today, what's coming next](https://blog.blockstream.com/building-on-simplicity-what-ships-today-what-is-coming-next/) July 28, 2026 [Read](https://blog.blockstream.com/building-on-simplicity-what-ships-today-what-is-coming-next/) *WHAT’S NEW* ### [0-conf for Elements and Liquid: A technical explainer](https://blog.blockstream.com/0-conf-for-elements-and-liquid-a-technical-explainer/) July 2, 2026 [Read](https://blog.blockstream.com/0-conf-for-elements-and-liquid-a-technical-explainer/) *COMPANY* ### [Blockstream quarterly update - Q2 2026](https://blog.blockstream.com/blockstream-quarterly-update-q2-2026/) July 1, 2026 [Read](https://blog.blockstream.com/blockstream-quarterly-update-q2-2026/) ## Get product and engineering updates.