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Paper Citation Record · LEDGER

SIGIR 2025 -- LiveRAG Challenge Report

As of 7 August 2026, this Paper Citation Record lists 32 of 32 outbound references and 2 inbound Pith citation observations for arXiv:2507.04942.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2507.04942 v2

Coverage vector

measured 32 of 32 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-06T19:39:55.381290Z

measured 34 of 34 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-07T06:34:17.273281+00:00

measured 2 of 2 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-07T00:23:09.095048Z

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: pith, observed 2026-08-07T00:22:35.268504Z

Reference resolution

32 of 32 outbound references displayed

  • verified exact5
  • verified fuzzy14
  • unresolved13
  • parse uncertain0
  • malformed identifier0
  • metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation df316aaa-f292-4ee4-9c03-9e4f9591b216 · outbound

This paper cites Retrieval-augmented generation for knowledge- intensive NLP tasks.

SIGIR 2025 -- LiveRAG Challenge Report Retrieval-augmented generation for knowledge- intensive NLP tasks

Reference 1

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:59.657966Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.305246Z digest=sha256:949b7671d4b90b069927a520d2937132d740ab6850f7e41c8131cbaa08b3c04d

Observation dc8e06da-7c26-4386-b42e-1e388cce4182 · outbound

This paper cites Atlas: Few-shot learning with retrieval augmented lan- guage models.

SIGIR 2025 -- LiveRAG Challenge Report Atlas: Few-shot learning with retrieval augmented lan- guage models

Reference 2

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:59.528978Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.338718Z digest=sha256:cf8af39f5b5dfc91f76c8d5c8a1dbc819543825a0777fe0459ab109bbcc264a4

Observation 96d2a619-b462-4af2-a2f6-2f33957a2c6e · outbound

This paper cites Retrieval-Augmented Generation for Large Language Models: A Survey.

SIGIR 2025 -- LiveRAG Challenge Report Retrieval-Augmented Generation for Large Language Models: A Survey

Reference 3

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:53.404280Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:53.404280Z digest=sha256:353a4c9e85683b03245becd88b9436006b645e1ed9ca0c8a9cde75e1df19447d

Observation 40b86bee-d0f4-4351-9e58-ab0aac0495e2 · outbound

This paper cites The Great Nugget Recall: Automating Fact Extraction and RAG Evaluation with Large Language Models.

SIGIR 2025 -- LiveRAG Challenge Report The Great Nugget Recall: Automating Fact Extraction and RAG Evaluation with Large Language Models

Reference 4

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:53.466408Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:53.466408Z digest=sha256:fe57e7bbad2f2800cdf1ac3e0577648c9b62d8072b71085997c68d87da060597

Observation 0d2612da-046f-4181-8d9d-81729928c3d1 · outbound

This paper cites Ragas: Automated evaluation of retrieval augmented generation.

SIGIR 2025 -- LiveRAG Challenge Report Ragas: Automated evaluation of retrieval augmented generation

Reference 5

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:59.356511Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.519440Z digest=sha256:66a637184ebbee232656fc8fae7fca658a32c18aaab4b6569e43493172a14cf9

Observation 1327db2c-db04-4e52-afed-8af4b0d4565b · outbound

This paper cites Generating Diverse Q&A Benchmarks for RAG Evaluation with DataMorgana.

SIGIR 2025 -- LiveRAG Challenge Report Generating Diverse Q&A Benchmarks for RAG Evaluation with DataMorgana

Reference 6

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:53.556349Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:53.556349Z digest=sha256:45bae761d5966b4ef390dacb0762688913dc6d8490a32c41778877f7eefb7021

Observation 3692a945-473a-4855-98b7-954cdbde97e6 · outbound

This paper cites CRAG-comprehensive RAG benchmark.

SIGIR 2025 -- LiveRAG Challenge Report CRAG-comprehensive RAG benchmark

Reference 7

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:59.123101Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.625489Z digest=sha256:e794880bbf649e1e7277db4787e339e69a78e3cc5072aa5f4db8ff6478c9e1ee

Observation 3189758f-19da-48dc-8ab6-f1815db16894 · outbound

This paper cites Support Evaluation for the TREC 2024 RAG Track: Comparing Human versus LLM Judges.

SIGIR 2025 -- LiveRAG Challenge Report Support Evaluation for the TREC 2024 RAG Track: Comparing Human versus LLM Judges

Reference 8

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:53.694230Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:53.694230Z digest=sha256:d9e13af3bd605f4cc8688ea58b2d4d83645e87b49b6d72a06364ba35a28078c2

Observation 83042387-3ae9-4b90-9e82-82ff3ee0a3e3 · outbound

This paper cites Rahmani, Varsha Ramineni, Nick Craswell, Bhaskar Mitra, and Emine Yilmaz.

SIGIR 2025 -- LiveRAG Challenge Report Rahmani, Varsha Ramineni, Nick Craswell, Bhaskar Mitra, and Emine Yilmaz

Reference 9

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:58.852843Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.698956Z digest=sha256:6933dc8f23f18ccabfffc0544660f4f76c50f1e5c6de1cd558303196986ebac0

Observation 296d3dc7-e65b-400b-be9e-f8019146bded · outbound

This paper cites Don’t use llms to make relevance judgments.

SIGIR 2025 -- LiveRAG Challenge Report Don’t use llms to make relevance judgments

Reference 10

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:58.554242Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.784404Z digest=sha256:8288f17a5e2fabb41fc767027409b0f2ab3482f5abec03efb04a8f65af6f0f9b

Observation 7b86baaa-9f4e-4493-a9fd-8f3006c2678b · outbound

This paper cites The fineweb datasets: Decanting the web for the finest text data at scale.

SIGIR 2025 -- LiveRAG Challenge Report The fineweb datasets: Decanting the web for the finest text data at scale

Reference 11

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:58.335707Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:53.931077Z digest=sha256:3ec6e21765c5d870de19ebfcb8c4a15d6384740de76240269f93fb60b398df93

Observation cfe5f369-9bd9-424e-85c5-73cde3d7b6fc · outbound

This paper cites Text embeddings by weakly-supervised contrastive pre-training, 2024.

SIGIR 2025 -- LiveRAG Challenge Report Text embeddings by weakly-supervised contrastive pre-training, 2024

Reference 12

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:58.119498Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.050628Z digest=sha256:5b6c5b3294287cca509d0bd09afac0b985350dd7f06b9b707cd0a2d67e1927c9

Observation fc13c16f-ea5f-49be-a425-4670653d1459 · outbound

This paper cites Accurate and efficient metadata filtering in pinecone’s serverless vector database.

SIGIR 2025 -- LiveRAG Challenge Report Accurate and efficient metadata filtering in pinecone’s serverless vector database

Reference 13

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:57.904672Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.098570Z digest=sha256:94a461f8a91fe0043b3e226ce027159a9db0127b660091b44c68f6240e10f327

Observation fae1d68b-70cf-4f23-95d5-a278fde2ae93 · outbound

This paper cites The fast johnson–lindenstrauss transform and approximate nearest neighbors.

SIGIR 2025 -- LiveRAG Challenge Report The fast johnson–lindenstrauss transform and approximate nearest neighbors

Reference 14

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:57.724206Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.151571Z digest=sha256:24ee19149cc33cfc4b1739bcfefb340a2606d33ac6798ffe9fd455817c2cef32

Observation 26ff4e4e-1677-44b6-b9b3-162465f71a05 · outbound

This paper cites Product quantization for nearest neighbor search.

SIGIR 2025 -- LiveRAG Challenge Report Product quantization for nearest neighbor search

Reference 15

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:57.536126Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.199376Z digest=sha256:8e9703844debb25c5f64ce42d9f8fc450e17a6cde300da6a0ae677cfec5f2a12

Observation 2cd22d91-ddfe-49eb-abc4-8c1e13010f5d · outbound

This paper cites an unresolved cited work.

SIGIR 2025 -- LiveRAG Challenge Report Unresolved cited work

Reference 16

Resolution
unresolved
raw_fallback, observed 2026-08-06T19:39:57.368141Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.244060Z digest=sha256:6ffd05e67dff2b45249843af3273c273c497585391a57876fb5fb3a8dec802f1

Observation 8d204908-7d67-4cce-a805-03becea44773 · outbound

This paper cites Generating Q&A benchmarks for RAG evaluation in enterprise settings.

SIGIR 2025 -- LiveRAG Challenge Report Generating Q&A benchmarks for RAG evaluation in enterprise settings

Reference 17

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:57.158821Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.307492Z digest=sha256:e0ca07d82aa26c6e7c8725bbeac948f7badd8fe3008b9cb1e797ee5ba3f0cc10

Observation e45d347e-6229-45e7-917c-e152b4f1a8c7 · outbound

This paper cites RMIT-ADM+S at the SIGIR 2025 LiveRAG Challenge.

SIGIR 2025 -- LiveRAG Challenge Report RMIT-ADM+S at the SIGIR 2025 LiveRAG Challenge

Reference 18

Resolution
verified exact
local_arxiv, observed 2026-08-06T19:39:56.625885Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.391282Z digest=sha256:2ad770a4741ef8e85785169c7de29e680001042ef805cddb534431a9fcc65a58

Observation 56c28ea2-f516-4a49-98c9-7a81cd9b3459 · outbound

This paper cites RAGtifier: Evaluating RAG Generation Approaches of State-of-the-Art RAG Systems for the SIGIR LiveRAG Competition.

SIGIR 2025 -- LiveRAG Challenge Report RAGtifier: Evaluating RAG Generation Approaches of State-of-the-Art RAG Systems for the SIGIR LiveRAG Competition

Reference 19

Resolution
verified exact
local_arxiv, observed 2026-08-06T19:39:56.337862Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.466508Z digest=sha256:6fecca41e0c0e1ba70dbeab2a76fedfbefbd9b3b2d3f4517647d9820ac6858fe

Observation da43ca26-c4ec-4209-85cb-9c667a6f95bf · outbound

This paper cites CIIR@LiveRAG 2025: Optimizing Multi-Agent Retrieval Augmented Generation through Self-Training.

SIGIR 2025 -- LiveRAG Challenge Report CIIR@LiveRAG 2025: Optimizing Multi-Agent Retrieval Augmented Generation through Self-Training

Reference 20

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:54.506624Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:54.506624Z digest=sha256:ff9b2082c1e9c26ba95c2447c8e949c30e329e454e3616df28682b41894b3df0

Observation b1c42514-05bb-4921-b02d-c175c976d5b5 · outbound

This paper cites LTRR: Learning To Rank Retrievers for LLMs.

SIGIR 2025 -- LiveRAG Challenge Report LTRR: Learning To Rank Retrievers for LLMs

Reference 21

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:54.589048Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:54.589048Z digest=sha256:cb91c98941b87d37bb7e89b87ecad09caf1de31717accdd803956b8cab618e9f

Observation e723e267-767a-42a6-b46f-43701c15633c · outbound

This paper cites DoTA-RAG: Dynamic of Thought Aggregation RAG.

SIGIR 2025 -- LiveRAG Challenge Report DoTA-RAG: Dynamic of Thought Aggregation RAG

Reference 22

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:57.025460Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.608225Z digest=sha256:3bb82a54fa2e0629e5889b3e89e9caf75122ea32950bebb647dc189b64ee1b07

Observation c1029138-ee1d-4c8e-9b54-cd4ecd5b81e6 · outbound

This paper cites PreQRAG -- Classify and Rewrite for Enhanced RAG.

SIGIR 2025 -- LiveRAG Challenge Report PreQRAG -- Classify and Rewrite for Enhanced RAG

Reference 23

Resolution
verified exact
local_arxiv, observed 2026-08-06T19:39:56.097058Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.654573Z digest=sha256:e7be1473c61b674b7ff4ae7f110bed7be03aabe79c404d7080c3fcd305da1b9a

Observation f8dec7b3-c51e-466a-9359-6256a8d2e416 · outbound

This paper cites RAGentA: Multi-Agent Retrieval-Augmented Generation for Attributed Question Answering.

SIGIR 2025 -- LiveRAG Challenge Report RAGentA: Multi-Agent Retrieval-Augmented Generation for Attributed Question Answering

Reference 24

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:54.695229Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:54.695229Z digest=sha256:c5ddbd5ab6cd111818896f7b2bd7de1eaf8969ae58385e01b677709dcc405731

Observation a8a61f92-1574-4eb5-9f0f-671271c99f0e · outbound

This paper cites TopClustRAG at SIGIR 2025 LiveRAG Challenge.

SIGIR 2025 -- LiveRAG Challenge Report TopClustRAG at SIGIR 2025 LiveRAG Challenge

Reference 25

Resolution
verified exact
local_arxiv, observed 2026-08-06T19:39:55.889227Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.725549Z digest=sha256:998e0705ca0e296927f50282a1edd94505d8109461fce0653801ba2beca38220

Observation a8dd4342-af75-4879-b1af-dddbb96f4cba · outbound

This paper cites Knowledge-Aware Diverse Reranking for Cross-Source Question Answering.

SIGIR 2025 -- LiveRAG Challenge Report Knowledge-Aware Diverse Reranking for Cross-Source Question Answering

Reference 26

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:54.750897Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:54.750897Z digest=sha256:d52351ad03e273797f0300f2d4f3c15eacc14a1dfdf716dedf2af9bb985fb45d

Observation 82436ace-19e6-4412-9196-f87112f287fb · outbound

This paper cites Leveraging LLM-Assisted Query Understanding for Live Retrieval-Augmented Generation.

SIGIR 2025 -- LiveRAG Challenge Report Leveraging LLM-Assisted Query Understanding for Live Retrieval-Augmented Generation

Reference 27

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:54.866294Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:54.866294Z digest=sha256:c365fdc7c2cda83bacc17ed505869a3eabeb498334e0fdc382c275e5271b2f20

Observation 0194ab01-739a-44a5-8565-f4b694d66dc4 · outbound

This paper cites UiS-IAI@LiveRAG: Retrieval-Augmented Information Nugget-Based Generation of Responses.

SIGIR 2025 -- LiveRAG Challenge Report UiS-IAI@LiveRAG: Retrieval-Augmented Information Nugget-Based Generation of Responses

Reference 28

Resolution
verified exact
local_arxiv, observed 2026-08-06T19:39:55.625540Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:54.967864Z digest=sha256:37450afc8fc05ec09031e62001a8cfc69eb8951313c22ce4e301df895d4e93b3

Observation 8cda25aa-9490-423d-af63-4b9a5b756b15 · outbound

This paper cites HLTCOE at LiveRAG: GPT-Researcher using ColBERT retrieval.

SIGIR 2025 -- LiveRAG Challenge Report HLTCOE at LiveRAG: GPT-Researcher using ColBERT retrieval

Reference 29

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:55.069147Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:55.069147Z digest=sha256:b8d7c91c0fb531ebad933134a88f9c494eaabbf17f829599f7dd1a2eb29e1aa6

Observation aee830c9-d1e5-4e19-a3f6-7dc79d12aac1 · outbound

This paper cites A Survey on LLM-as-a-Judge.

SIGIR 2025 -- LiveRAG Challenge Report A Survey on LLM-as-a-Judge

Reference 30

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:55.155608Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:55.155608Z digest=sha256:13b6817722b0b098a0fedbc9c73145ee2843df589645c7f3b8734c5a82fec966

Observation 65127241-23dd-49e7-81f1-7a34332aca2b · outbound

This paper cites Initial nugget evaluation results for the trec 2024 rag track with the autonuggetizer framework, 2024.

SIGIR 2025 -- LiveRAG Challenge Report Initial nugget evaluation results for the trec 2024 rag track with the autonuggetizer framework, 2024

Reference 31

Resolution
unresolved
no resolver link, observed 2026-08-06T19:39:55.265090Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-06T19:39:55.265090Z digest=sha256:3b15d85e3ae8f6be776b1b9416274abcfabe61276e58fecae8fdf866d4d6c36f

Observation d78f384f-68b9-441b-8c34-04c1e12aefd1 · outbound

This paper cites Rank aggregation methods for the web.

SIGIR 2025 -- LiveRAG Challenge Report Rank aggregation methods for the web

Reference 32

Resolution
verified fuzzy
raw_fallback, observed 2026-08-06T19:39:56.897117Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-06T19:39:55.381290Z digest=sha256:6c23be0a36482ffb7859473a72f0e55ecb74fdcdcd7d72ab49ed8a8a14515d9a

Pith citing papers

Observation 2421a4dc-db6b-4e29-b2b1-78201777c171 · inbound

RAGtifier: Evaluating RAG Generation Approaches of State-of-the-Art RAG Systems for the SIGIR LiveRAG Competition cites this paper.

RAGtifier: Evaluating RAG Generation Approaches of State-of-the-Art RAG Systems for the SIGIR LiveRAG Competition SIGIR 2025 -- LiveRAG Challenge Report

Reference 7

Resolution
unresolved
no resolver link, observed 2026-08-07T00:23:09.095048Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-07T00:23:09.095048Z digest=sha256:840728fe518f117d1fd332fafbec1ed8977985025e28f21ad836692551736cc1

Observation 929e8105-fc1f-492b-91b0-fe5ce1ad7e24 · inbound

RMIT-ADM+S at the SIGIR 2025 LiveRAG Challenge cites this paper.

RMIT-ADM+S at the SIGIR 2025 LiveRAG Challenge SIGIR 2025 -- LiveRAG Challenge Report

Reference 4

Resolution
verified exact
local_arxiv, observed 2026-08-07T00:22:35.319545Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

source=pdf_text observed=2026-08-07T00:22:30.685606Z digest=sha256:f77ca85dad03eaa3f0b05a14666dd6079e771b9041d54aca0e72ec2659592281