Pith Number

pith:7JFZ5YZX

pith:2007:7JFZ5YZX2O4BONH7H3R2D5PALV

not attested not anchored not stored refs pending

Superluminal Radio Features in the M87 Jet and the Site of Flaring TeV Gamma-ray Emission

C.C. Cheung (NRAO, D.E. Harris (Harvard-CfA), L. Stawarz (Stanford/KIPAC), Stanford)

arxiv:0705.2448 v2 · 2007-05-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7JFZ5YZX2O4BONH7H3R2D5PALV}

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	2026-07-04T17:03:52.235596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa4b9ee337d3b81734ff3ee3a1f5e05d7e5e2d8a95e19d03712a5a614cf878a2

Aliases

arxiv: 0705.2448 · arxiv_version: 0705.2448v2 · doi: 10.48550/arxiv.0705.2448 · pith_short_12: 7JFZ5YZX2O4B · pith_short_16: 7JFZ5YZX2O4BONH7 · pith_short_8: 7JFZ5YZX

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/7JFZ5YZX2O4BONH7H3R2D5PALV \
  | 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: fa4b9ee337d3b81734ff3ee3a1f5e05d7e5e2d8a95e19d03712a5a614cf878a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb574c0f7e56ae9e965f9ed443d808181e215364291104a51ccdcc421677496c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-16T22:00:53Z",
    "title_canon_sha256": "44a0e28a6b4427724dff57d1f7feb3f6c2853342b6bd71c9f0bb097c85eb4033"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.2448",
    "kind": "arxiv",
    "version": 2
  }
}