Pith Number

pith:XP3CBFLN

pith:2017:XP3CBFLNHW5TITK7ZX3B6OM4Q4

not attested not anchored not stored refs pending

The flat-spectrum radio quasar 3C 345 from the high to the low emission state

A. L\"ahteenm\"aki, E. Congiu, E. J\"arvel\"a, G. La Mura, J.M. Bai, L. Chen, L. Foschini, M. Berton, M. Frezzato, M. Tornikoski, N.H. Liao, P. Calcidese, P. Rafanelli, S. Ciroi, S.K. Li, T. Pursimo, V. Abate, V. Cracco, V. Ramakrishnan, X.L. Fan

arxiv:1707.07681 v2 · 2017-07-24 · 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{XP3CBFLNHW5TITK7ZX3B6OM4Q4}

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	2026-05-18T00:11:43.181460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbf620956d3dbb344d5fcdf61f399c8710477d7887f58eca019a0a490c75bda3

Aliases

arxiv: 1707.07681 · arxiv_version: 1707.07681v2 · doi: 10.48550/arxiv.1707.07681 · pith_short_12: XP3CBFLNHW5T · pith_short_16: XP3CBFLNHW5TITK7 · pith_short_8: XP3CBFLN

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/XP3CBFLNHW5TITK7ZX3B6OM4Q4 \
  | 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: bbf620956d3dbb344d5fcdf61f399c8710477d7887f58eca019a0a490c75bda3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbef5d13cb0492c2eadedbb807f108ecb3b0129f9fff83cd6f69a836afa805f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-07-24T18:00:00Z",
    "title_canon_sha256": "b2275a6fc578f168c693684762f928481a015023cd27dc1872ef5a6578b17a95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07681",
    "kind": "arxiv",
    "version": 2
  }
}