{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:UJBQYK4HOFLJTYTWOJ62CTZO66","short_pith_number":"pith:UJBQYK4H","canonical_record":{"source":{"id":"2505.12281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2025-05-18T07:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"9c4daacccca039daf9f4a156826fcafcf75a5fbfd112689d5e2b04c9c469c62e","abstract_canon_sha256":"6a085283752e3d593aad91a1001cdfa050517ef57520cacc6414bffff283e674"},"schema_version":"1.0"},"canonical_sha256":"a2430c2b87715699e276727da14f2ef79b7ec379f11689531031adfec8bff7d8","source":{"kind":"arxiv","id":"2505.12281","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.12281","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"arxiv_version","alias_value":"2505.12281v1","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.12281","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_12","alias_value":"UJBQYK4HOFLJ","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_16","alias_value":"UJBQYK4HOFLJTYTW","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_8","alias_value":"UJBQYK4H","created_at":"2026-07-05T11:05:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:UJBQYK4HOFLJTYTWOJ62CTZO66","target":"record","payload":{"canonical_record":{"source":{"id":"2505.12281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2025-05-18T07:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"9c4daacccca039daf9f4a156826fcafcf75a5fbfd112689d5e2b04c9c469c62e","abstract_canon_sha256":"6a085283752e3d593aad91a1001cdfa050517ef57520cacc6414bffff283e674"},"schema_version":"1.0"},"canonical_sha256":"a2430c2b87715699e276727da14f2ef79b7ec379f11689531031adfec8bff7d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:05:01.515795Z","signature_b64":"loO1pYhrZpy5v7SwF4ncWCfolawFFfZxdyP0PosEwi+0uqjG/Mr5Eo8EQmym5CV2wgZAFNjksqhvCPDJcAU3Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2430c2b87715699e276727da14f2ef79b7ec379f11689531031adfec8bff7d8","last_reissued_at":"2026-07-05T11:05:01.515044Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:05:01.515044Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.12281","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":"2026-07-05T11:05:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x3SFIKpz0AsEfquNpD2F4D3PIMhWcbwq8LjMnPnhrGwQpkqkcDPqSChqX29SEAgB0YZmJ99liqkNMzBp3MuHCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T06:02:51.094982Z"},"content_sha256":"53e08620b2a54f20845eb7f843ba63a8cf36ffd57e1bdb6f0f3ce2f1ea4a4c64","schema_version":"1.0","event_id":"sha256:53e08620b2a54f20845eb7f843ba63a8cf36ffd57e1bdb6f0f3ce2f1ea4a4c64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:UJBQYK4HOFLJTYTWOJ62CTZO66","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bishop: Sparsified Bundling Spiking Transformers on Heterogeneous Cores with Error-Constrained Pruning","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NE","authors_text":"Boxun Xu, Peng Li, Vikram Iyer, Yuxuan Yin","submitted_at":"2025-05-18T07:42:58Z","abstract_excerpt":"We present Bishop, the first dedicated hardware accelerator architecture and HW/SW co-design framework for spiking transformers that optimally represents, manages, and processes spike-based workloads while exploring spatiotemporal sparsity and data reuse. Specifically, we introduce the concept of Token-Time Bundle (TTB), a container that bundles spiking data of a set of tokens over multiple time points. Our heterogeneous accelerator architecture Bishop concurrently processes workload packed in TTBs and explores intra- and inter-bundle multiple-bit weight reuse to significantly reduce memory ac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.12281","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.12281/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:05:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7tCPGcFpmBtagvh9S3hRMQuheHTYAtxb/lmJhRsgXZhhMRE+i5cZq41WW9++YZl13v4PXZ60yazLCcIQsquSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T06:02:51.095520Z"},"content_sha256":"12f0f4913141d08a8b1ddf92477399dde5ae68bfb8f9def4599f571268f9f09d","schema_version":"1.0","event_id":"sha256:12f0f4913141d08a8b1ddf92477399dde5ae68bfb8f9def4599f571268f9f09d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/bundle.json","state_url":"https://pith.science/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/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":"2026-08-18T06:02:51Z","links":{"resolver":"https://pith.science/pith/UJBQYK4HOFLJTYTWOJ62CTZO66","bundle":"https://pith.science/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/bundle.json","state":"https://pith.science/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UJBQYK4HOFLJTYTWOJ62CTZO66/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:UJBQYK4HOFLJTYTWOJ62CTZO66","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":"6a085283752e3d593aad91a1001cdfa050517ef57520cacc6414bffff283e674","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2025-05-18T07:42:58Z","title_canon_sha256":"9c4daacccca039daf9f4a156826fcafcf75a5fbfd112689d5e2b04c9c469c62e"},"schema_version":"1.0","source":{"id":"2505.12281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.12281","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"arxiv_version","alias_value":"2505.12281v1","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.12281","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_12","alias_value":"UJBQYK4HOFLJ","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_16","alias_value":"UJBQYK4HOFLJTYTW","created_at":"2026-07-05T11:05:01Z"},{"alias_kind":"pith_short_8","alias_value":"UJBQYK4H","created_at":"2026-07-05T11:05:01Z"}],"graph_snapshots":[{"event_id":"sha256:12f0f4913141d08a8b1ddf92477399dde5ae68bfb8f9def4599f571268f9f09d","target":"graph","created_at":"2026-07-05T11:05:01Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.12281/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Bishop, the first dedicated hardware accelerator architecture and HW/SW co-design framework for spiking transformers that optimally represents, manages, and processes spike-based workloads while exploring spatiotemporal sparsity and data reuse. Specifically, we introduce the concept of Token-Time Bundle (TTB), a container that bundles spiking data of a set of tokens over multiple time points. Our heterogeneous accelerator architecture Bishop concurrently processes workload packed in TTBs and explores intra- and inter-bundle multiple-bit weight reuse to significantly reduce memory ac","authors_text":"Boxun Xu, Peng Li, Vikram Iyer, Yuxuan Yin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2025-05-18T07:42:58Z","title":"Bishop: Sparsified Bundling Spiking Transformers on Heterogeneous Cores with Error-Constrained Pruning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.12281","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":"sha256:53e08620b2a54f20845eb7f843ba63a8cf36ffd57e1bdb6f0f3ce2f1ea4a4c64","target":"record","created_at":"2026-07-05T11:05:01Z","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":"6a085283752e3d593aad91a1001cdfa050517ef57520cacc6414bffff283e674","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2025-05-18T07:42:58Z","title_canon_sha256":"9c4daacccca039daf9f4a156826fcafcf75a5fbfd112689d5e2b04c9c469c62e"},"schema_version":"1.0","source":{"id":"2505.12281","kind":"arxiv","version":1}},"canonical_sha256":"a2430c2b87715699e276727da14f2ef79b7ec379f11689531031adfec8bff7d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2430c2b87715699e276727da14f2ef79b7ec379f11689531031adfec8bff7d8","first_computed_at":"2026-07-05T11:05:01.515044Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:05:01.515044Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"loO1pYhrZpy5v7SwF4ncWCfolawFFfZxdyP0PosEwi+0uqjG/Mr5Eo8EQmym5CV2wgZAFNjksqhvCPDJcAU3Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:05:01.515795Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.12281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53e08620b2a54f20845eb7f843ba63a8cf36ffd57e1bdb6f0f3ce2f1ea4a4c64","sha256:12f0f4913141d08a8b1ddf92477399dde5ae68bfb8f9def4599f571268f9f09d"],"state_sha256":"f0ab8cc3c019a4d04d8d0e2581b951afdcce84e15db31eccfe98255c7c2858bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hYIcWj+VeLaSHUbaz/gQyjBp7J4K+la0gP+zjFG8bQcmM0NMHlythgPQwRntM1tMFV2BgzAnkkMIELs6xfolDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T06:02:51.102749Z","bundle_sha256":"49237af9cff0544f0201053138ee1b709cff0870c5f5288a9462367799fff1aa"}}