Pith Number

pith:WRH35FGL

pith:2007:WRH35FGL6A4N2OT6YSRQZ3ORU5

not attested not anchored not stored refs pending

High Frequency VLBI Imaging of the Jet Base of M87

Chun Ly (UCLA), R. Craig Walker (NRA0), William Junor (LANL)

arxiv:astro-ph/0701511 v1 · 2007-01-17 · 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{WRH35FGL6A4N2OT6YSRQZ3ORU5}

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	2026-05-18T04:29:07.154420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b44fbe94cbf038dd3a7ec4a30cedd1a76cb738927a54ed088d38910c054bf507

Aliases

arxiv: astro-ph/0701511 · arxiv_version: astro-ph/0701511v1 · doi: 10.48550/arxiv.astro-ph/0701511 · pith_short_12: WRH35FGL6A4N · pith_short_16: WRH35FGL6A4N2OT6 · pith_short_8: WRH35FGL

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/WRH35FGL6A4N2OT6YSRQZ3ORU5 \
  | 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: b44fbe94cbf038dd3a7ec4a30cedd1a76cb738927a54ed088d38910c054bf507

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6f9a10fda33d3b4f05522c54f5e0ae9723686c19738bb30a4e08f12884b54e0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-17T21:08:11Z",
    "title_canon_sha256": "e88ca0b6847630075c28bc14d3ef3df3fb964253c9218bee1b36e277254e03b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701511",
    "kind": "arxiv",
    "version": 1
  }
}