SIPO

active

drep1yffld2866p00cyg3ejjdewtvazgah7jjgk0s9m7m5ytmmdq33v3zh

cardanoscan metadata all DReps

Connect a wallet to delegate

Voting power

₳89.62M

as of 13 Oct

Delegators

410

as of 13 Oct

Votes cast

149

126 yes · 13 no · 10 abstain

Participation

149 of 158

94% of the actions open since it registered

Active until

epoch 680

19 epochs left without voting

Votes and certificates are read from our own copy of the chain’s governance record, last updated 1m ago. Participation counts the governance actions that were still open for voting when this DRep first registered, or were proposed later.

Objectives

As a DRep, SIPO aims to build sustainable decentralized governance for Cardano. Leveraging experience as an ADA holder since 2017, a stake pool operator since the Shelley launch in July 2020, and a Japanese-language publisher with over 3,800 articles, SIPO evaluates and votes on proposals that preserve Cardano's decentralization while adapting it to society. SIPO publishes the reasoning behind its votes in Japanese, including No and Abstain votes and the conditions under which it would vote Yes, so that delegators can judge whether SIPO still represents them. SIPO will also work on a Web3.0-based sustainable circular regional revitalization system, connecting Cardano with the real world, and operates from a position that combines a global perspective with locally rooted activities, without being bound to specific groups. カルダノのステークプールと DRep を運営し、投票の理由を日本語で公開しています。

Motivations

Currently, I am working at Symons Co., Ltd. on the development and operation of a Web 2.0-based sustainable circular regional revitalization system for local governments in Japan. I aim to become a bridge between Cardano and the real world by transitioning this system to a Web 3.0 base. Additionally, through research on a new bottom-up digital society model called "NEO Jomon + Blockchain + AI," I intend to work on developing next-generation consensus formation and governance models. By integrating these experiences with DRep activities, SIPO's motivation as a DRep is to contribute to the development of Cardano's sustainable ecosystem by fusing global perspectives with locally rooted activities.

Qualifications

1. ADA holder since 2017 2. Stake pool operator since July 2020 (registered the day after the Shelley hard fork), running three pools (SIPO / SIPO2 / SIPO3) that have produced 47,920 blocks (AdaStat, October 2026) 3. DRep since September 2024, having voted on 149 governance actions (126 Yes / 13 No / 10 Abstain, October 2026) with rationales published at sipo.tokyo 4. Over 3,800 articles on sipo.tokyo, including daily Cardano intelligence and governance analysis in Japanese 5. Midnight Foundation ambassador (Nightforce) and participant SPO in the RealFi SPO Accelerator Program (Alpha Cohort) 6. Research and corporate support through SITION Research and Consultation 7. Proponent of AIRA, a project to bring a regional revitalization system for Japanese local governments onto the Cardano blockchain

Links

Voting power by epoch

Stored copy of Koios' figures, through epoch 661

Governance action	Type	Vote	Rationale	Time
Should stakePoolTargetNum (k) be raised from 500 to 1000? (SPO poll)	Info	Abstain	published	07/10/26, 01:06:11
Withdraw 11,787,063 ada for the OpenZeppelin Stack administered by Intersect	Treasury withdrawal	No	published	25/09/26, 01:38:08
Reduce minPoolCost to 75 ada	Parameter change	Abstain	published	14/09/26, 23:57:38
Reimburse Ikigai Info Governance Action Deposit.	Treasury withdrawal	Yes	published	26/08/26, 02:23:37
Governance Incentives Framework 2026	Treasury withdrawal	No	published	26/08/26, 02:22:11
Reduce minPoolCost to 75 ada and increase Plutus Memory Limits (Part 2)	Parameter change	Yes	published	07/08/26, 01:37:09
Name the Protocol Version 12 hard fork “von Bergen“	Info	Yes	published	01/08/26, 22:50:04
Update Constitutional Committee 2026	Committee update	Yes	published	01/08/26, 14:51:12
Withdraw 120,000,000 ada for AlphaGrowth’s Cardano PRIME	Treasury withdrawal	Yes	published	01/08/26, 14:22:27
Revised Cardano dOSPO and OMF Program Proposal	Treasury withdrawal	No	published	01/08/26, 13:52:15
Scalus 2026: Maintenance, Dijkstra Readiness, Interoperability & Application Runtime	Treasury withdrawal	Yes	published	27/07/26, 03:12:48
Global Order Book connect Cardano DeFi to increase transaction	Treasury withdrawal	No	published	27/07/26, 03:11:51
Bifrost: Unlocking Bitcoin DeFi on Cardano — Road to Mainnet (Phase 1 of 2)	Treasury withdrawal	Yes	published	27/07/26, 03:11:01
Net Change Limit: Cardano Treasury (Epochs 613-713)	Info	Yes	published	27/07/26, 03:09:22
Alchemy by Sundial x Charms: Cardano-Native Bitcoin Treasury Protocol	Treasury withdrawal	Abstain	published	27/07/26, 02:22:42
Cardano Builder DAO	Treasury withdrawal	No	published	27/07/26, 02:19:33
Blockfrost's transformation to not-for-profit	Treasury withdrawal	Yes	published	27/07/26, 02:13:38
Withdraw 4,969,231 ada for Cardano Enterprise Adoption: Ticketing Platform	Treasury withdrawal	Yes	published	27/07/26, 01:59:36
Se7en Labs: Daedalus Wallet Maintenance and Improvements 2026-2027	Treasury withdrawal	Yes	published	17/07/26, 11:24:22
Withdraw 3,961,538 ada for Bringing Real-World Payments to Cardano with Wirex	Treasury withdrawal	No	published	17/07/26, 04:06:22
Withdraw 25,400,000 ada for Intersect: Governance coordination and technical ...	Treasury withdrawal	Yes	published	17/07/26, 04:04:04
Withdraw 1,193,000 ada for Intersect Technical Steering Committee Support	Treasury withdrawal	Yes	published	17/07/26, 04:02:57
Withdraw 1,162,746 ada for MLabs Core Tool Maintenance & Enhancement: Plutarc...	Treasury withdrawal	Yes	published	17/07/26, 04:02:00
Withdraw 1,310,960 ada for Hardware Wallet Maintenance 2026	Treasury withdrawal	Yes	published	17/07/26, 03:59:53
Withdraw 3,810,423 ada for Mithril Protocol	Treasury withdrawal	Yes	published	17/07/26, 03:59:01
Withdraw 1,684,050 ada for Tx3 by TxPipe: Open API Layer for Cardano's dApp P...	Treasury withdrawal	Yes	published	17/07/26, 03:58:00
Withdraw 540,750 ada for Oura by TxPipe: Maintaining Cardano’s Event Pipeline	Treasury withdrawal	Yes	published	17/07/26, 03:56:11
Withdraw 540,750 ada for Pallas by TxPipe: Maintaining Cardano's Core Rust Li...	Treasury withdrawal	Yes	published	17/07/26, 03:55:10
Withdraw 540,750 ada for UTxO RPC by TxPipe: Maintaining Cardano’s Integratio...	Treasury withdrawal	Yes	published	17/07/26, 03:53:23
Withdraw 540,750 ada for by TxPipe Dolos: Maintaining Cardano's Lightweight D...	Treasury withdrawal	Yes	published	17/07/26, 03:51:01
Strike Finance Liquidity Deployment	Treasury withdrawal	Abstain	published	12/07/26, 22:13:10
Reforming Treasury Governance	Info	Abstain	published	12/07/26, 03:00:37
Eternl: Path to Sustainability - v2	Treasury withdrawal	Yes	published	03/07/26, 07:01:48
Reimburse Ikigai Info Governance Action Deposit.	Treasury withdrawal	Yes	published	03/07/26, 06:20:53
Reduce the committeeMinSize parameter from 7 to 5	Parameter change	Yes	published	02/07/26, 03:51:50
IO: Hydra	Treasury withdrawal	Yes	published	20/06/26, 02:09:02
Hard Fork to Protocol Version 11 ('van Rossem' Hard Fork)	Hard fork	Yes	published	19/06/26, 23:31:30
5am.earth Trust Layer Targeting Vision 2030 KPIs	Treasury withdrawal	Yes	published	19/06/26, 21:11:01
Tweag Core Cardano Infrastructure: Treasury Withdrawal 2026–2027	Treasury withdrawal	Yes	published	10/06/26, 04:32:52
Update Plutus Cost Models	Parameter change	Yes	published	10/06/26, 03:57:40
Rare Evo and Dev Gov Day 2026: Cardano Title Sponsorship	Treasury withdrawal	No	published	10/06/26, 03:38:01
Cardano Critical Integrations V2	Treasury withdrawal	Yes	published	10/06/26, 02:14:19
Eternl: Path to Sustainability (2026-2027)	Treasury withdrawal	Yes	published	03/06/26, 09:17:20
Scalus: Cardano’s Application Platform for Building, Launching, and Scaling	Treasury withdrawal	Yes	published	03/06/26, 08:25:23
Cardano dOSPO and OMF Program	Treasury withdrawal	No	published	03/06/26, 07:13:50
Cardano Vision 2026: Human Centred, Scalable, Post Quantum Secure - IO Research	Treasury withdrawal	Yes	published	01/06/26, 03:04:46
[OriLife × TonFarm] Identifying 180 Million Durians Without Physical Labels	Treasury withdrawal	Abstain	published	01/06/26, 02:03:48
Tweag Core Cardano Infrastructure: Treasury Withdrawal 2026–2028	Treasury withdrawal	Abstain	published	01/06/26, 00:43:38
Cardano at TOKEN2049 Singapore 2026: Top-Up ‘Title’ Sponsorship Upgrade	Treasury withdrawal	Yes	published	27/05/26, 02:57:10
Cardano at TOKEN2049 Singapore 2026: Baseline ‘Platinum' Sponsorship Proposal	Treasury withdrawal	Yes	published	27/05/26, 02:55:30
Revised Cardano Summit 2026 Singapore	Treasury withdrawal	Yes	published	27/05/26, 02:52:02
The first node in the browser; a Cardano USP	Treasury withdrawal	Yes	published	13/05/26, 09:56:25
Pebble & Ecosystem maintenance: TypeScript core of Cardano	Treasury withdrawal	Yes	published	13/05/26, 09:53:27
Pogun: Capital Without Compromise	Treasury withdrawal	Yes	published	09/05/26, 11:07:04
Blockfrost: Maintenance and Next Generation Indexing	Treasury withdrawal	Yes	published	09/05/26, 10:55:05
IO & Midgard Labs: L2 Scalability Initiative	Treasury withdrawal	Yes	published	09/05/26, 10:49:00
IO & VacuumLabs: Enhancing Plutus - Performance, Correctness, and Usability	Treasury withdrawal	Yes	published	09/05/26, 10:38:56
IO: Cardano High Assurance Technical Collaboration	Treasury withdrawal	Yes	published	09/05/26, 10:33:29
IO & Ensurable Systems: Cardano Maintenance Initiative	Treasury withdrawal	Yes	published	09/05/26, 10:29:38
IO: Developer Experience Initiative	Treasury withdrawal	Yes	published	09/05/26, 10:25:07
IO: Consensus Initiative	Treasury withdrawal	Yes	published	09/05/26, 10:18:12
IO: Cardano Upgrades	Treasury withdrawal	Yes	published	09/05/26, 10:12:31
Cardano Summit 2026 and TOKEN2049 Singapore	Treasury withdrawal	No	published	17/04/26, 23:51:58
Pebble + Gerolamo - HLabs 2026 Budget	Treasury withdrawal	Yes	published	10/04/26, 04:51:26
Approve Cardano Foundation as New Managing Entity of Project Catalyst	Info	Yes	published	29/03/26, 08:39:47
Cardano x Draper Dragon: Orion Fund	Treasury withdrawal	Yes	published	29/03/26, 08:31:53
Cardano Defi Liquidity Budget - Withdrawal 1	Treasury withdrawal	Yes	published	29/03/26, 08:19:42
Dingo: a Production-Grade Block Producer in Go by Blink Labs	Treasury withdrawal	Yes	published	29/03/26, 08:05:54
Cardano Budget Process Framework (facilitated by Intersect)	Info	Yes	published	29/03/26, 07:53:57
Amaru Treasury Withdrawal 2026	Treasury withdrawal	Yes	published	03/03/26, 00:30:43
Net Change Limit of 300 Million ADA for Epochs 613–713	Info	Yes	published	21/02/26, 01:03:11
Increase Transaction and Block Memory Units (Part 1 of 2)	Parameter change	Yes	published	20/01/26, 04:49:36
Name Protocol Version 11 hard fork - van Rossem	Info	Yes	published	20/01/26, 04:45:10
Net Change Limit (Epoch 613 to Epoch 713)	Info	Yes	published	20/01/26, 04:36:05
DeltaDeFi: Hydra Trading Infrastructure Budget (₳1,500,000)	Info	Yes	published	20/01/26, 04:27:50
Cardano DeFi Liquidity Budget - Withdrawal 1	Treasury withdrawal	Yes	published	20/01/26, 04:18:07
CARDANO BLOCKCHAIN ECOSYSTEM CONSTITUTION v2.4	New constitution	Yes	published	19/12/25, 00:36:52
Cardano 2030: Vision, Mission, Strategy Framework and KPIs	Info	Yes	published	18/12/25, 23:57:53
Add Constitutional Committee Member - Christina	Committee update	Yes	published	17/12/25, 00:12:56
Add Constitutional Committee Member	Committee update	Yes	published	09/12/25, 21:53:34
Withdraw ₳70,000,000 for Cardano Critical Integrations Budget	Treasury withdrawal	Yes	published	09/12/25, 21:06:41
2025 Net Change Limit Extension	Info	Yes	published	30/11/25, 21:14:56
Cardano Critical Integrations Budget	Info	Yes	published	27/11/25, 23:27:40
Reimburse Ikigai Info Governance Action Deposit.	Info	Yes	published	04/11/25, 02:53:56
Loan ₳5,000,000 to Expand Cardano's Global Listings	Treasury withdrawal	Abstain	published	04/11/25, 02:20:28
Securing Generic Top-Level Domains for the Cardano Ecosystem	Info	Yes	published	04/11/25, 01:19:25
Constitutional Committee Compensation Epochs 581-653	Info	Abstain	published	04/11/25, 00:39:54
CARDANO BLOCKCHAIN ECOSYSTEM CONSTITUTION v2.3	New constitution	Yes	published	13/10/25, 05:41:35
Withdraw ₳1,150,000 for GovTool 12 months active maintenance and development	Treasury withdrawal	Yes	published	13/10/25, 05:17:01
Defining the Cardano 2030 Vision & Strategy	Info	Yes	published	13/10/25, 02:36:02
Stablecoin DeFi Liquidity Budget	Info	Yes	published	13/10/25, 00:55:15
Replace Interim Constitutional Committee	Committee update	Yes	published	30/08/25, 04:52:30
CARDANO BLOCKCHAIN ECOSYSTEM CONSTITUTION v2.0	New constitution	Yes	published	30/08/25, 04:43:36
Withdraw ₳5M for Cardano's Global Listing Expansion - Powered by Snek	Treasury withdrawal	No	published	17/08/25, 05:08:10
Cardano Global Listing Expansion - Powered by Snek	Treasury withdrawal	No	published	17/08/25, 04:25:12
Withdraw ₳1,300,000 for Blockfrost Platform community budget proposal	Treasury withdrawal	Yes	published	03/08/25, 21:56:30
Withdraw ₳99,600 for BloxBean Java Tools Maintenance and Enhancement	Treasury withdrawal	Yes	published	22/07/25, 13:13:22
Withdraw ₳104,347 for MLabs Research towards Tooling for Elliptical Curves...	Treasury withdrawal	Yes	published	22/07/25, 13:08:51
Withdraw ₳750,000 for Cardano Product Committee: Community-driven 2030 Carda...	Treasury withdrawal	Yes	published	22/07/25, 13:02:12
Withdraw ₳314,800 for PyCardano administered by Intersect	Treasury withdrawal	Yes	published	22/07/25, 12:56:37
Withdraw ₳199,911 for OpShin - Python Smart Contracts for Cardano	Treasury withdrawal	Yes	published	22/07/25, 12:51:30
Withdraw ₳26,840,000 for Input Output Research (IOR): Cardano Vision - Wor...	Treasury withdrawal	Yes	none	22/07/25, 12:47:50
Withdraw ₳4,000,000 for Expanding Stablecoin / Cardano Native Asset Support...	Treasury withdrawal	Yes	published	22/07/25, 12:41:58
Withdraw ₳3,000,000 for High-yield RWA Asset for Cardano: Tokenized Real Estate	Treasury withdrawal	Yes	published	22/07/25, 12:34:53
Withdraw ₳889,500 for Cardano Ecosystem Pavilions at Exhibitions	Treasury withdrawal	Yes	published	22/07/25, 12:29:04
Withdraw ₳3,126,000 for Ecosystem Exchange Listing and Market Making service...	Treasury withdrawal	Yes	published	21/07/25, 14:28:07
Withdraw ₳1,500,000 for Complement Catalyst: Extended Quadratic Funding---Zer...	Treasury withdrawal	Yes	published	21/07/25, 14:20:46
Withdraw ₳12,000,000 for Cardano Builder DAO administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 14:12:55
Withdraw ₳6,000,000 for Unveiling the First Unified Global Events Marketing S...	Treasury withdrawal	Yes	published	21/07/25, 14:08:58
Withdraw ₳6,000,000 for Cardano Summit 2025 and regional tech events	Treasury withdrawal	Yes	published	21/07/25, 13:15:07
Withdraw ₳69,459,000 for Catalyst 2025 Proposal by Input Output: Advancing De...	Treasury withdrawal	Yes	published	21/07/25, 13:10:07
Withdraw ₳592,780 for Beyond Minimum Viable Governance: Iteratively Improvin....	Treasury withdrawal	Yes	published	21/07/25, 13:00:51
Withdraw ₳15,750,000 for a MBO for the Cardano ecosystem: Intersect	Treasury withdrawal	Yes	published	21/07/25, 12:55:42
Withdraw ₳212,000 for AdaStat.net Cardano blockchain explorer	Treasury withdrawal	Yes	published	21/07/25, 12:40:49
Withdraw ₳605,000 for A free Native Asset CDN for Cardano Developers	Treasury withdrawal	Yes	published	21/07/25, 12:35:35
Withdraw ₳266,667 for Cexplorer.io -- Developer-Focused Blockchain Explorer...	Treasury withdrawal	Yes	published	21/07/25, 12:29:01
Withdraw ₳657,692 for Scalus - DApps Development Platform	Treasury withdrawal	Yes	none	21/07/25, 12:24:25
Withdraw ₳583,000 for Eternl Maintenance administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 12:20:18
Withdraw ₳700,000 for ZK Bridge administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 12:13:43
Withdraw ₳11,070,323 for TWEAG's Proposals for multiple core budget project...	Treasury withdrawal	Yes	published	21/07/25, 12:06:34
Withdraw ₳243,478 for MLabs Core Tool Maintenance & Enhancement: Plutarch	Treasury withdrawal	Yes	published	21/07/25, 12:01:06
Withdraw ₳578,571 for Gerolamo - Cardano node in typescript	Treasury withdrawal	Yes	published	21/07/25, 11:55:55
Withdraw ₳5,885,000 for OSC Budget Proposal - Paid Open Source Model...	Treasury withdrawal	Yes	published	21/07/25, 11:48:31
Withdraw ₳600,000 for Complete Web3 developer stack to make Cardano the smart...	Treasury withdrawal	Yes	published	21/07/25, 08:40:29
Withdraw ₳300,000 for Ledger App Rewrite administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 05:34:55
Withdraw ₳220,914 for Dolos: Sustaining a Lightweight Cardano Data Node	Treasury withdrawal	Yes	published	21/07/25, 05:27:53
Withdraw ₳1,161,000 for zkFold ZK Rollup administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 05:23:41
Withdraw ₳130,903 for Lucid Evolution Maintenance administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 05:16:27
Withdraw ₳220,914 for UTxO RPC: Sustaining Cardano Blockchain Integration	Treasury withdrawal	Yes	published	21/07/25, 05:10:03
Withdraw ₳220,914 for Pallas: Sustaining Critical Rust Tooling for Cardano	Treasury withdrawal	Yes	published	21/07/25, 05:03:51
Withdraw ₳424,800 for Hardware Wallets Maintenance administered by Intersect	Treasury withdrawal	Yes	published	21/07/25, 04:54:12
Withdraw ₳96,817,080 for 2025 Input Output Engineering Core Development Proposal	Treasury withdrawal	Yes	published	21/07/25, 04:34:23
Withdraw ₳2,162,096 for Midgard - Optimistic Rollups administered by Intersect	Treasury withdrawal	Yes	published	19/07/25, 10:38:44
Withdraw ₳45,217 for MLabs Core Tool Maintenance & Enhancement: Cardano.nix	Treasury withdrawal	Yes	published	19/07/25, 10:27:19
Cardano GovTool Budget - 12 months full active maintenance and development	Info	Yes	published	12/07/25, 06:47:05
Amaru Treasury Withdrawal 2025	Treasury withdrawal	Yes	published	26/06/25, 11:52:26
2025 Cardano Blockchain Ecosystem Budget - 7.5M ₳ for community builders	Info	Abstain	published	17/05/25, 05:03:02
Cardano Blockchain Ecosystem Budget - 275M ada Administered by Intersect	Info	Yes	none	17/05/25, 04:39:45
Cardano Blockchain Ecosystem Budget: Amaru Node Development 2025	Info	Yes	published	17/05/25, 04:24:33
Set a 300 million ADA Net Change Limit for Epochs 563–635	Info	Yes	published	17/05/25, 04:11:03
2025 Cardano NCL	Info	No	published	17/05/25, 04:05:40
2025 Net Change Limit	Info	Yes	published	23/04/25, 15:33:46
Set 2025 Net Change Limit of 300M ADA, 2026 Net Change Limit of 250M ADA	Info	Yes	published	14/04/25, 00:25:53
Defining the Cardano Vision and Roadmap for 2025 and beyond	Info	Yes	published	15/03/25, 03:09:53
Decrease Treasury Tax from 20% to 10%	Parameter change	Yes	published	26/02/25, 04:23:13
Cardano Constitution to Replace the Interim Constitution	New constitution	Yes	published	02/02/25, 07:35:57
Rename the Chang 2 Hard Fork to the Plomin Hard Fork	Info	Yes	published	02/12/24, 12:58:51
Should K increased?	Info	No	published	14/10/24, 04:14:38
Cardanoの生きがい - Ikigai -	Info	Yes	none	25/09/24, 22:28:01

Source: Koios (public)updated 2h agoProfile text is the DRep’s own unverified statement.