TrustCompute: Result Validation, Reputation-Aware Scheduling and Quality-Based Payments for Outsourced LoRA Fine-Tuning
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Abstract
Outsourced model fine-tuning requires reliable task allocation, result validation, and incentives for quality. We present TrustCompute, a compute-sharing platform integrating two-stage adapter verification, reputation-aware scheduling, quality-based payments, and auditable ledger records for LoRA fine-tuning. Our evaluation combines synthetic workloads, real GPU-based fine-tuning, and a local Ethereum Virtual Machine (EVM) environment. Across 440 validation cases, all 400 invalid submissions were rejected and all 40 valid submissions were accepted. With 50% unreliable workers, reputation-aware scheduling achieved 100% task completion and reduced the mean failed-attempt time by 89% relative to round-robin scheduling. An integration experiment completed 120 real fine-tuning tasks. Additional simulations showed that identity resets can exploit exploration and that quality proportional payments can improve strategic workers’ delivered quality. These findings support jointly designing verification, scheduling, and payment mechanisms. TrustCompute verifies compliance with result acceptance criteria, but does not prove adherence to a prescribed training procedure.
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References
- Hu, E. J., Shen, Y., Wallis, P., Allen-Zhu, Z., Li, Y., Wang, S., ... & Chen, W. (2021). Lora: Low-rank adaptation of large language models. arXiv preprint arXiv:2106.09685.
[CrossRef] [Google Scholar] - Kang, J., Xiong, Z., Niyato, D., Xie, S., & Zhang, J. (2019). Incentive mechanism for reliable federated learning: A joint optimization approach to combining reputation and contract theory. IEEE Internet of Things Journal, 6(6), 10700-10714.
[CrossRef] [Google Scholar] - Anderson, D. P. (2004, November). Boinc: A system for public-resource computing and storage. In Fifth IEEE/ACM international workshop on grid computing (pp. 4-10). IEEE.
[CrossRef] [Google Scholar] - Borzunov, A., Baranchuk, D., Dettmers, T., Riabinin, M., Belkada, Y., Chumachenko, A., ... & Raffel, C. (2023, July). Petals: Collaborative inference and fine-tuning of large models. In Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 3: System Demonstrations) (pp. 558-568).
[CrossRef] [Google Scholar] - Ryabinin, M., & Gusev, A. (2020). Towards crowdsourced training of large neural networks using decentralized mixture-of-experts. Advances in Neural Information Processing Systems, 33, 3659-3672.
[Google Scholar] - Weng, J., Weng, J., Zhang, J., Li, M., Zhang, Y., & Luo, W. (2019). Deepchain: Auditable and privacy-preserving deep learning with blockchain-based incentive. IEEE Transactions on Dependable and Secure Computing, 18(5), 2438-2455.
[CrossRef] [Google Scholar] - Parno, B., Howell, J., Gentry, C., & Raykova, M. (2016). Pinocchio: Nearly practical verifiable computation. Communications of the ACM, 59(2), 103-112.
[CrossRef] [Google Scholar] - Tramer, F., & Boneh, D. (2018). Slalom: Fast, verifiable and private execution of neural networks in trusted hardware. arXiv preprint arXiv:1806.03287.
[CrossRef] [Google Scholar] - Zhao, L., Wang, Q., Wang, C., Li, Q., Shen, C., & Feng, B. (2021). Veriml: Enabling integrity assurances and fair payments for machine learning as a service. IEEE Transactions on Parallel and Distributed Systems, 32(10), 2524-2540.
[CrossRef] [Google Scholar] - Jia, H., Yaghini, M., Choquette-Choo, C. A., Dullerud, N., Thudi, A., Chandrasekaran, V., & Papernot, N. (2021, May). Proof-of-learning: Definitions and practice. In 2021 IEEE Symposium on Security and Privacy (SP) (pp. 1039-1056). IEEE.
[CrossRef] [Google Scholar] - Körbel, B., Sigwart, M., Frauenthaler, P., Sober, M., & Schulte, S. (2021, November). Blockchain-based result verification for computation offloading. In International Conference on Service-Oriented Computing (pp. 99-115). Cham: Springer International Publishing.
[CrossRef] [Google Scholar] - Kamvar, S. D., Schlosser, M. T., & Garcia-Molina, H. (2003). The EigenTrust algorithm for reputation management in P2P networks. Proceedings of the 12th International Conference on World Wide Web, 640–651.
[CrossRef] [Google Scholar] - Josang, A., & Ismail, R. (2002, June). The beta reputation system. In Proceedings of the 15th bled electronic commerce conference (Vol. 5, pp. 324-337). https://domino.fov.um.si/proceedings.nsf/Proceedings/D9E48B66F32A7DFFC1256E9F00355B37/$File/josang.pdf
[Google Scholar] - Auer, P., Cesa-Bianchi, N., & Fischer, P. (2002). Finite-time analysis of the multiarmed bandit problem. Machine learning, 47(2), 235-256.
[CrossRef] [Google Scholar] - Daniel, J. R., Benjamin, V. R., Abbas, K., Ian, O., & Zheng, W. (2018). A tutorial on thompson sampling. Foundations and trends® in machine learning, 11(1), 1-99.
[CrossRef] [Google Scholar] - Friedman, E. J., & Resnick, P. (2001). The social cost of cheap pseudonyms. Journal of Economics & Management Strategy, 10(2), 173-199.
[CrossRef] [Google Scholar] - Douceur, J. R. (2002, March). The sybil attack. In International workshop on peer-to-peer systems (pp. 251-260). Berlin, Heidelberg: Springer Berlin Heidelberg.
[CrossRef] [Google Scholar] - Ding, N., Fang, Z., & Huang, J. (2020). Optimal contract design for efficient federated learning with multi-dimensional private information. IEEE Journal on Selected Areas in Communications, 39(1), 186-200.
[CrossRef] [Google Scholar] - Qwen Team. (2024). Qwen2.5 technical report. arXiv preprint arXiv:2412.15115.
[CrossRef] [Google Scholar] - Merity, S., Xiong, C., Bradbury, J., & Socher, R. (2016). Pointer sentinel mixture models. arXiv preprint arXiv:1609.07843.
[CrossRef] [Google Scholar]
Cite This Article
TY - JOUR AU - Lee, Lin-Fa AU - Chang, Yi-Yu AU - Yeh, Kuo-Hui PY - 2026 DA - 2026/09/19 TI - TrustCompute: Result Validation, Reputation-Aware Scheduling and Quality-Based Payments for Outsourced LoRA Fine-Tuning JO - Journal of Reliable and Secure Computing T2 - Journal of Reliable and Secure Computing JF - Journal of Reliable and Secure Computing VL - 2 IS - 3 SP - 179 EP - 193 DO - 10.62762/JRSC.2026.867713 UR - https://www.icck.org/article/abs/JRSC.2026.867713 KW - outsourced computing KW - LoRA fine-tuning KW - result validation KW - reputation-aware scheduling KW - quality-based payment KW - auditable ledger AB - Outsourced model fine-tuning requires reliable task allocation, result validation, and incentives for quality. We present TrustCompute, a compute-sharing platform integrating two-stage adapter verification, reputation-aware scheduling, quality-based payments, and auditable ledger records for LoRA fine-tuning. Our evaluation combines synthetic workloads, real GPU-based fine-tuning, and a local Ethereum Virtual Machine (EVM) environment. Across 440 validation cases, all 400 invalid submissions were rejected and all 40 valid submissions were accepted. With 50% unreliable workers, reputation-aware scheduling achieved 100% task completion and reduced the mean failed-attempt time by 89% relative to round-robin scheduling. An integration experiment completed 120 real fine-tuning tasks. Additional simulations showed that identity resets can exploit exploration and that quality proportional payments can improve strategic workers’ delivered quality. These findings support jointly designing verification, scheduling, and payment mechanisms. TrustCompute verifies compliance with result acceptance criteria, but does not prove adherence to a prescribed training procedure. SN - 3070-6424 PB - Institute of Central Computation and Knowledge LA - English ER -
@article{Lee2026TrustCompu,
author = {Lin-Fa Lee and Yi-Yu Chang and Kuo-Hui Yeh},
title = {TrustCompute: Result Validation, Reputation-Aware Scheduling and Quality-Based Payments for Outsourced LoRA Fine-Tuning},
journal = {Journal of Reliable and Secure Computing},
year = {2026},
volume = {2},
number = {3},
pages = {179-193},
doi = {10.62762/JRSC.2026.867713},
url = {https://www.icck.org/article/abs/JRSC.2026.867713},
abstract = {Outsourced model fine-tuning requires reliable task allocation, result validation, and incentives for quality. We present TrustCompute, a compute-sharing platform integrating two-stage adapter verification, reputation-aware scheduling, quality-based payments, and auditable ledger records for LoRA fine-tuning. Our evaluation combines synthetic workloads, real GPU-based fine-tuning, and a local Ethereum Virtual Machine (EVM) environment. Across 440 validation cases, all 400 invalid submissions were rejected and all 40 valid submissions were accepted. With 50\% unreliable workers, reputation-aware scheduling achieved 100\% task completion and reduced the mean failed-attempt time by 89\% relative to round-robin scheduling. An integration experiment completed 120 real fine-tuning tasks. Additional simulations showed that identity resets can exploit exploration and that quality proportional payments can improve strategic workers’ delivered quality. These findings support jointly designing verification, scheduling, and payment mechanisms. TrustCompute verifies compliance with result acceptance criteria, but does not prove adherence to a prescribed training procedure.},
keywords = {outsourced computing, LoRA fine-tuning, result validation, reputation-aware scheduling, quality-based payment, auditable ledger},
issn = {3070-6424},
publisher = {Institute of Central Computation and Knowledge}
}
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