{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OGD6IR45C2TTJOXTKL56R5IBNV","short_pith_number":"pith:OGD6IR45","canonical_record":{"source":{"id":"1305.5094","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2013-05-22T11:46:40Z","cross_cats_sorted":[],"title_canon_sha256":"7fea1b74524303a4c48173731877b7222f28d12fd400e62dba0f73b6436f979b","abstract_canon_sha256":"724b03b71862e557899053b48960bc4793efb77845d7c400bf07a1b49bc78450"},"schema_version":"1.0"},"canonical_sha256":"7187e4479d16a734baf352fbe8f5016d62d1ae5462e621119b2e190d3409dcb1","source":{"kind":"arxiv","id":"1305.5094","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5094","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5094v2","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5094","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"pith_short_12","alias_value":"OGD6IR45C2TT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OGD6IR45C2TTJOXT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OGD6IR45","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OGD6IR45C2TTJOXTKL56R5IBNV","target":"record","payload":{"canonical_record":{"source":{"id":"1305.5094","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2013-05-22T11:46:40Z","cross_cats_sorted":[],"title_canon_sha256":"7fea1b74524303a4c48173731877b7222f28d12fd400e62dba0f73b6436f979b","abstract_canon_sha256":"724b03b71862e557899053b48960bc4793efb77845d7c400bf07a1b49bc78450"},"schema_version":"1.0"},"canonical_sha256":"7187e4479d16a734baf352fbe8f5016d62d1ae5462e621119b2e190d3409dcb1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:19:45.244381Z","signature_b64":"eP+2IujpK6TPKsuJJAdJUd5ySgHizwJQKd6ebdcdN2c6HHm0JJXdQ9Hey5gR3ojh2G1phTGtExBRcYYH7UPKBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7187e4479d16a734baf352fbe8f5016d62d1ae5462e621119b2e190d3409dcb1","last_reissued_at":"2026-05-18T03:19:45.243664Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:19:45.243664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.5094","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:19:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a8ywwdjcmK2DAovxeBKEmolKrXJYC9si2FcNKNhu9OEE6009ZZHXYN0kidg5RyBtcLP+/4HADgxAl1URb7SMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:13:57.929183Z"},"content_sha256":"fb138dcb29c1581f2383d6c50cc46c616c767d1b06613ce9d4cebe20d3e37a43","schema_version":"1.0","event_id":"sha256:fb138dcb29c1581f2383d6c50cc46c616c767d1b06613ce9d4cebe20d3e37a43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OGD6IR45C2TTJOXTKL56R5IBNV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Muscle as a meta-material operating near a critical point","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.bio-ph","authors_text":"Jean-Marc Allain, Lev Truskinovsky, Matthieu Caruel","submitted_at":"2013-05-22T11:46:40Z","abstract_excerpt":"Passive mechanical response of skeletal muscles at fast time scales is dominated by long range interactions inducing cooperative behavior without breaking the detailed balance. This leads to such unusual \"material properties\" as negative equilibrium stiffness and different behavior in force and displacement controlled loading conditions. Our fitting of experimental data suggests that \"muscle material\" is finely tuned to perform close to a critical point which explains large fluctuations observed in muscles close to the stall force."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5094","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:19:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kGNRXGAhexDsTpxA+DCrVTLxNEPqlFf/Xad9hFw3ASZOjoQ5I2brR105fjOJ6R5ogPVJ4IANR8Qs/4AwjnhDAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:13:57.929840Z"},"content_sha256":"66d5930deb79a9209bdca159bea803dfa13d6b57243afa038abd39af3ffe422f","schema_version":"1.0","event_id":"sha256:66d5930deb79a9209bdca159bea803dfa13d6b57243afa038abd39af3ffe422f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OGD6IR45C2TTJOXTKL56R5IBNV/bundle.json","state_url":"https://pith.science/pith/OGD6IR45C2TTJOXTKL56R5IBNV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OGD6IR45C2TTJOXTKL56R5IBNV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T06:13:57Z","links":{"resolver":"https://pith.science/pith/OGD6IR45C2TTJOXTKL56R5IBNV","bundle":"https://pith.science/pith/OGD6IR45C2TTJOXTKL56R5IBNV/bundle.json","state":"https://pith.science/pith/OGD6IR45C2TTJOXTKL56R5IBNV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OGD6IR45C2TTJOXTKL56R5IBNV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OGD6IR45C2TTJOXTKL56R5IBNV","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"724b03b71862e557899053b48960bc4793efb77845d7c400bf07a1b49bc78450","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2013-05-22T11:46:40Z","title_canon_sha256":"7fea1b74524303a4c48173731877b7222f28d12fd400e62dba0f73b6436f979b"},"schema_version":"1.0","source":{"id":"1305.5094","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5094","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5094v2","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5094","created_at":"2026-05-18T03:19:45Z"},{"alias_kind":"pith_short_12","alias_value":"OGD6IR45C2TT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OGD6IR45C2TTJOXT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OGD6IR45","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:66d5930deb79a9209bdca159bea803dfa13d6b57243afa038abd39af3ffe422f","target":"graph","created_at":"2026-05-18T03:19:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Passive mechanical response of skeletal muscles at fast time scales is dominated by long range interactions inducing cooperative behavior without breaking the detailed balance. This leads to such unusual \"material properties\" as negative equilibrium stiffness and different behavior in force and displacement controlled loading conditions. Our fitting of experimental data suggests that \"muscle material\" is finely tuned to perform close to a critical point which explains large fluctuations observed in muscles close to the stall force.","authors_text":"Jean-Marc Allain, Lev Truskinovsky, Matthieu Caruel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2013-05-22T11:46:40Z","title":"Muscle as a meta-material operating near a critical point"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5094","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:fb138dcb29c1581f2383d6c50cc46c616c767d1b06613ce9d4cebe20d3e37a43","target":"record","created_at":"2026-05-18T03:19:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"724b03b71862e557899053b48960bc4793efb77845d7c400bf07a1b49bc78450","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2013-05-22T11:46:40Z","title_canon_sha256":"7fea1b74524303a4c48173731877b7222f28d12fd400e62dba0f73b6436f979b"},"schema_version":"1.0","source":{"id":"1305.5094","kind":"arxiv","version":2}},"canonical_sha256":"7187e4479d16a734baf352fbe8f5016d62d1ae5462e621119b2e190d3409dcb1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7187e4479d16a734baf352fbe8f5016d62d1ae5462e621119b2e190d3409dcb1","first_computed_at":"2026-05-18T03:19:45.243664Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:19:45.243664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eP+2IujpK6TPKsuJJAdJUd5ySgHizwJQKd6ebdcdN2c6HHm0JJXdQ9Hey5gR3ojh2G1phTGtExBRcYYH7UPKBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:19:45.244381Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.5094","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb138dcb29c1581f2383d6c50cc46c616c767d1b06613ce9d4cebe20d3e37a43","sha256:66d5930deb79a9209bdca159bea803dfa13d6b57243afa038abd39af3ffe422f"],"state_sha256":"90dbf3e50930a3914bbfb4f0608a1e36e533d6d18ad0d70e310d954e2ea7f0ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kHd0JYVjCsofrQC8woJiPx3nXXk+k3vQxkoLe3xl0J83TKbJkvnT0omsEqr8Ql+VD2/Lm5VfUcPbcYJZv0n1Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:13:57.933054Z","bundle_sha256":"db2b6f12b277f8c6b34cb88f2465b21545e226811fd1e95fc6f692874c4abcc6"}}