Pith Number

pith:SMJZVSQ2

pith:2015:SMJZVSQ2ISFNLLRHN53K6YF7QA

not attested not anchored not stored refs pending

Seyfert galaxies with Swift: giant flares, rapid drops, and other surprises

D. Grupe, L. Gallo, R. Saxton, S. Komossa

arxiv:1502.06946 v1 · 2015-02-24 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SMJZVSQ2ISFNLLRHN53K6YF7QA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:26:24.035599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93139aca1a448ad5ae276f76af60bf801390b0f327be4f45639c5d0eb32a2c55

Aliases

arxiv: 1502.06946 · arxiv_version: 1502.06946v1 · doi: 10.48550/arxiv.1502.06946 · pith_short_12: SMJZVSQ2ISFN · pith_short_16: SMJZVSQ2ISFNLLRH · pith_short_8: SMJZVSQ2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SMJZVSQ2ISFNLLRHN53K6YF7QA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 93139aca1a448ad5ae276f76af60bf801390b0f327be4f45639c5d0eb32a2c55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a85cc8aeb9e113a19fe13ac29ee22ed7d8eeb1ba7687b052b27502d81a38553",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-02-24T20:37:46Z",
    "title_canon_sha256": "e328a7b6b66696ecd4b26530a0269b25b30a0edee215a50b027ad0c58a8d18a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06946",
    "kind": "arxiv",
    "version": 1
  }
}