{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6MFB4YROHVFLBGW7P2J2GJEC77","short_pith_number":"pith:6MFB4YRO","canonical_record":{"source":{"id":"1208.1591","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2012-08-08T06:16:18Z","cross_cats_sorted":[],"title_canon_sha256":"dbd983ac654e98c20ccc1cc7bbc75860f008500326554d0b3d03bca5fd6da2dc","abstract_canon_sha256":"85bca1c4fc53e8ad1150700775a0b6dba474c3581e923aafb3c1d101637667a8"},"schema_version":"1.0"},"canonical_sha256":"f30a1e622e3d4ab09adf7e93a32482fff517d242083c6cb2986275baff17adf4","source":{"kind":"arxiv","id":"1208.1591","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.1591","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"1208.1591v1","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1591","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"6MFB4YROHVFL","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6MFB4YROHVFLBGW7","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6MFB4YRO","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6MFB4YROHVFLBGW7P2J2GJEC77","target":"record","payload":{"canonical_record":{"source":{"id":"1208.1591","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2012-08-08T06:16:18Z","cross_cats_sorted":[],"title_canon_sha256":"dbd983ac654e98c20ccc1cc7bbc75860f008500326554d0b3d03bca5fd6da2dc","abstract_canon_sha256":"85bca1c4fc53e8ad1150700775a0b6dba474c3581e923aafb3c1d101637667a8"},"schema_version":"1.0"},"canonical_sha256":"f30a1e622e3d4ab09adf7e93a32482fff517d242083c6cb2986275baff17adf4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:49:11.146433Z","signature_b64":"I8j3kz9YYbk41ubG/xWFI3wwEh87/vSj18S3CjLLFADgQF+41YqvP0ZbHx9chxLi1K68Y03KYygl9dvwjUUzAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f30a1e622e3d4ab09adf7e93a32482fff517d242083c6cb2986275baff17adf4","last_reissued_at":"2026-05-18T03:49:11.145748Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:49:11.145748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.1591","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T/DBfFzEaykxprtsiddh8vJ3FAYSEB2XMWQ8Kle9zMMMdiywQr8k69VE+msAj0TPOgVD5Dv2orHhBq2yVaUTDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:16:53.619762Z"},"content_sha256":"d48ee5c1ab45538a337735974ad2e1301a314b2c76ea9ac0e58356767847b220","schema_version":"1.0","event_id":"sha256:d48ee5c1ab45538a337735974ad2e1301a314b2c76ea9ac0e58356767847b220"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6MFB4YROHVFLBGW7P2J2GJEC77","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CeTA - A Tool for Certified Termination Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Christian Sternagel, Harald Zankl, Ren\\'e Thiemann, Sarah Winkler","submitted_at":"2012-08-08T06:16:18Z","abstract_excerpt":"Since the first termination competition in 2004 it is of great interest, whether a proof that has been automatically generated by a termination tool, is indeed correct. The increasing number of termination proving techniques as well as the increasing complexity of generated proofs (e.g., combinations of several techniques, exhaustive labelings, tree automata, etc.), make certifying (i.e., checking the correctness of) such proofs more and more tedious for humans. Hence the interest in automated certification of termination proofs. This led to the general approach of using proof assistants (like"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1591","kind":"arxiv","version":1},"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":"2026-05-18T03:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/aKf3t/awjZRVKStM77cxegeEvBwl2dUlNskKyaVJqKL3oQ55/3LM9cXNCs6DdZbBOvVveFVEHO6M+7I+FjJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:16:53.620352Z"},"content_sha256":"c218dfec88cec4672ba3a540977d6824dc65a77303bf79f142c156f5ac425863","schema_version":"1.0","event_id":"sha256:c218dfec88cec4672ba3a540977d6824dc65a77303bf79f142c156f5ac425863"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6MFB4YROHVFLBGW7P2J2GJEC77/bundle.json","state_url":"https://pith.science/pith/6MFB4YROHVFLBGW7P2J2GJEC77/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6MFB4YROHVFLBGW7P2J2GJEC77/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":"2026-06-05T05:16:53Z","links":{"resolver":"https://pith.science/pith/6MFB4YROHVFLBGW7P2J2GJEC77","bundle":"https://pith.science/pith/6MFB4YROHVFLBGW7P2J2GJEC77/bundle.json","state":"https://pith.science/pith/6MFB4YROHVFLBGW7P2J2GJEC77/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6MFB4YROHVFLBGW7P2J2GJEC77/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6MFB4YROHVFLBGW7P2J2GJEC77","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":"85bca1c4fc53e8ad1150700775a0b6dba474c3581e923aafb3c1d101637667a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2012-08-08T06:16:18Z","title_canon_sha256":"dbd983ac654e98c20ccc1cc7bbc75860f008500326554d0b3d03bca5fd6da2dc"},"schema_version":"1.0","source":{"id":"1208.1591","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.1591","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"1208.1591v1","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1591","created_at":"2026-05-18T03:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"6MFB4YROHVFL","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6MFB4YROHVFLBGW7","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6MFB4YRO","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:c218dfec88cec4672ba3a540977d6824dc65a77303bf79f142c156f5ac425863","target":"graph","created_at":"2026-05-18T03:49:11Z","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":"Since the first termination competition in 2004 it is of great interest, whether a proof that has been automatically generated by a termination tool, is indeed correct. The increasing number of termination proving techniques as well as the increasing complexity of generated proofs (e.g., combinations of several techniques, exhaustive labelings, tree automata, etc.), make certifying (i.e., checking the correctness of) such proofs more and more tedious for humans. Hence the interest in automated certification of termination proofs. This led to the general approach of using proof assistants (like","authors_text":"Christian Sternagel, Harald Zankl, Ren\\'e Thiemann, Sarah Winkler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2012-08-08T06:16:18Z","title":"CeTA - A Tool for Certified Termination Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1591","kind":"arxiv","version":1},"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:d48ee5c1ab45538a337735974ad2e1301a314b2c76ea9ac0e58356767847b220","target":"record","created_at":"2026-05-18T03:49:11Z","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":"85bca1c4fc53e8ad1150700775a0b6dba474c3581e923aafb3c1d101637667a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2012-08-08T06:16:18Z","title_canon_sha256":"dbd983ac654e98c20ccc1cc7bbc75860f008500326554d0b3d03bca5fd6da2dc"},"schema_version":"1.0","source":{"id":"1208.1591","kind":"arxiv","version":1}},"canonical_sha256":"f30a1e622e3d4ab09adf7e93a32482fff517d242083c6cb2986275baff17adf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f30a1e622e3d4ab09adf7e93a32482fff517d242083c6cb2986275baff17adf4","first_computed_at":"2026-05-18T03:49:11.145748Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:49:11.145748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I8j3kz9YYbk41ubG/xWFI3wwEh87/vSj18S3CjLLFADgQF+41YqvP0ZbHx9chxLi1K68Y03KYygl9dvwjUUzAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:49:11.146433Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.1591","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d48ee5c1ab45538a337735974ad2e1301a314b2c76ea9ac0e58356767847b220","sha256:c218dfec88cec4672ba3a540977d6824dc65a77303bf79f142c156f5ac425863"],"state_sha256":"d8d3851e7b7deebe24f507db45f3f371f921dda6a8194585af37fba4673724c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYH7m69H463QDis5oFwcAv1H/8fNdsfNndbkhzs0VnzESA2V+5iR/Y+6mHkTeHf83BL8eG7mBnjy2iNYdFeeCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T05:16:53.623701Z","bundle_sha256":"0545c058d50aa2c3c3be0e68384d2580c60e3cea68a56510476d7be4aec15676"}}