Protocol Guild passes $40M in all-time funding distributed to members

Protocol Guild said it recently hit the milestone of $40M in all-time funding distributed to Protocol Guild members, thanking every donor who made this possible and saying the funding has a huge impact for Ethereum core devs.

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Stellar Wave 10 on Drips: $75,000 budget for a 7-day open-source contribution sprint (Oct 15–22)

Drips runs the Stellar Wave Program, a monthly contribution cycle for the Stellar open-source ecosystem where contributors solve issues across Stellar-related repos and earn Points; after each Wave, rewards are distributed according to the share of Points earned by each eligible contributor. Wave 10 runs Oct 15 to Oct 22, 2026 with a $75,000 budget. Completing a KYC/KYB check is a prerequisite for receiving any Wave Reward, and participants in comprehensively sanctioned jurisdictions are excluded.

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PayBox first hackathon: $20,000 prize pool for PayBox marketplace plugins

PayBox said its first hackathon invites builders to create plugins for the PayBox marketplace and earn a share of a $20,000 prize pool. The hackathon starts Friday.

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0G Apollo Accelerator Cohort 2

Four-month AI startup accelerator for up to 10 projects, offering up to $2 million per project, run with xBuilders. Deadline: November 2.

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X Layer TapeOut Accelerate: 100K USDT in rewards for builders

X Layer announced X Layer TapeOut Accelerate, with 100K USDT in rewards for builders creating verifiable applications with real-world utility and commercial potential, built with TapeOut on X Layer.

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BCH BLAZE 2026: Bitcoin Cash online hackathon, $8,000 in prizes

BLAZE is an 8-day online hackathon (November 14–22, 2026) for Bitcoin Cash developers, designers and entrepreneurs, with $8,000 in prizes paid in ParyonUSD CashToken. Register solo or as a team of up to four; registration closes 13 November.

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1inch DAO Aqua Revenue Stream Incubator

The 1inch DAO accepts applications to support novel Aqua strategies and SwapVM instructions, open on a rolling basis. Milestone funding is up to $50,000 per team, released across four milestones (5% / 10% / 35% / 50%), from a $400K program budget. Applicants must pass KYB/KYC and sign a revenue share agreement. Reviewers are StableLab, DAOPlomats and Arana Digital.

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Arbitrum Stablecoin Growth Program: USDG incentives plus a 2M ARB prize pool

The Arbitrum Foundation introduced the Arbitrum Stablecoin Growth Program on October 15, 2026, open to protocols with at least $1M in stablecoin balances; eligible protocols that commit to building with USDG as their primary stablecoin may be eligible for performance-based incentives as they grow, and the first 10 teams to reach $10M of USDG TVL, measured as a 30-day average, will each receive 200K ARB.

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Logos RFP-021: Trustless Ethereum State Attestation for LEZ

Logos posted RFP-021 on October 15, 2026, inviting proposals for a reusable LEZ primitive that verifies Ethereum consensus and finality, verifies that referenced state is included under a finalised Ethereum header, and emits a verified statement any LEZ program can consume, with no trusted intermediary. Tier M; estimated development duration 8 to 12 weeks; MIT and Apache 2.0 dual license. Submission deadline: 11 November 2026 (UTC).

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ASCON 2026 agent economics competition

Nyx Foundation's ASCON (Agentic Simulation for eCONomics competition) has a JPY 5,000,000 total prize pool for AI agents that trade, attack and verify inside a simulated market built on Nyx's Eris Ethereum L2 devnet. Registration runs September 1 to October 24, 2026; agent submissions are due by October 31, and the competition runs November 1 to 7. Entry is free, but participants pay their own AI costs.

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Alchemy Arc Credits Program: up to $10K in Alchemy credits per team building on Arc

Alchemy is offering up to $10K in credits per team for teams building on Arc, now that Arc mainnet is live on Alchemy. Credits are applied directly to the team's Alchemy account for a 90-day evaluation, with no lock-in and no proprietary APIs. Teams apply through a form on Alchemy's page and Alchemy says it will be in touch within 5 business days. No deadline stated.

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Cetus expands its HackenProof smart contract bug bounty: Critical findings now up to $1M

Cetus has increased the reward budget of its smart contract bug bounty on HackenProof and broadened the program scope, with Critical findings eligible for up to $1M (up to 10% of the total funds at risk, capped at $1,000,000). Reward tiers: Critical $30,000 to $1,000,000, High $3,000 to $30,000, Medium $100 to $1,000, Low $10 to $100. KYC required. No deadline stated.

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Paxos Labs launches a $500K bug bounty on Immunefi for Transit and PAXGy

Paxos Labs has launched a bug bounty on Immunefi covering Transit, a stablecoin conversion protocol that settles swaps between pegged tokens on the same chain or across chains, and PAXGy, tokenized gold that grows in gold terms. Critical smart contract findings pay up to $500,000 (minimum $10,000), High $5,000 to $10,000, and Medium a flat $1,000, paid in USDG on Ethereum. PoC and KYC required. Live since 20 October 2026. No deadline stated.

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Public RFP: Research on Cardano's utxoCostPerByte Parameter

Request for Proposals invites researchers and technical experts, individually or in teams, to submit proposals for investigating how far Cardano’s utxoCostPerByte protocol parameter can safely be reduced.

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Flap Ecosystem Fund Season 4: another $100,000 for community events, creators and developer education

The round supports ecosystem events and community meetups, content creators and artists, developer tutorials and educational resources, developer communities and forums, and online AMAs and technical workshops. Apply through the form linked in Flap's announcement. No deadline stated.

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Arbitrum Mentorship Program Cohort 2 Applications Open

The Arbitrum Foundation has opened applications for Cohort 2 of the Arbitrum Mentorship Program, run with Robinhood Chain, for early-stage teams building on Arbitrum One and Robinhood Chain, with $100K in prizes for top-performing teams. Applications are open until December 6, 2026 and are reviewed on an ongoing basis.

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