Pith Number

pith:G7PR5AEV

pith:1999:G7PR5AEVZFDAMR2YAHOIRVPJVV

not attested not anchored not stored refs pending

Optical and Radio Polarimetry of the M87 Jet at 0.2" Resolution

Eric S. Perlman, Fang Zhou, F. Duccio Macchetto, John A. Biretta, William B. Sparks

arxiv:astro-ph/9901176 v1 · 1999-01-13 · 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{G7PR5AEVZFDAMR2YAHOIRVPJVV}

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.

Cited by

1 paper in Pith

Tracking down the broadband polarimetric properties of PG 1553+113

Receipt and verification

First computed	2026-07-04T16:10:36.955348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37df1e8095c94606475801dc88d5e9ad5ed08c5019f3458116c683eba4cff742

Aliases

arxiv: astro-ph/9901176 · arxiv_version: astro-ph/9901176v1 · doi: 10.48550/arxiv.astro-ph/9901176 · pith_short_12: G7PR5AEVZFDA · pith_short_16: G7PR5AEVZFDAMR2Y · pith_short_8: G7PR5AEV

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/G7PR5AEVZFDAMR2YAHOIRVPJVV \
  | 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: 37df1e8095c94606475801dc88d5e9ad5ed08c5019f3458116c683eba4cff742

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7a58699de69c72c50c027984951fc4a9ab170d370b5eba373d21a2cd9da34ad",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-13T20:20:38Z",
    "title_canon_sha256": "4774ea2718107d74b82ea0f45aa7935b45a8bad816ac972bf93c7f912203fd22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901176",
    "kind": "arxiv",
    "version": 1
  }
}