Pith Number

pith:2Q7RR3VJ

pith:2019:2Q7RR3VJ2WHIIAE5E63GAOV7DT

not attested not anchored not stored refs pending

Extremely long baseline interferometry with Origins Space Telescope

Alexander Raymond, Daniel C. M. Palumbo, David J. James, Dominic W. Pesce, Gary J. Melnick, Jonathan Weintroub, Kari Haworth, Lindy Blackburn, Maciek Wielgus, Michael D. Johnson, Sheperd S. Doeleman

arxiv:1909.01408 v1 · 2019-09-03 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2Q7RR3VJ2WHIIAE5E63GAOV7DT}

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

When the Shadow Meets Its Measure: Assessing the Feasibility of Submillimeter Black Hole Shadow Imaging in Megamaser Disk AGN

Receipt and verification

First computed	2026-07-05T00:02:16.071018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d43f18eea9d58e84009d27b6603abf1ccdb5d37b6440d014821513e4fa7c934f

Aliases

arxiv: 1909.01408 · arxiv_version: 1909.01408v1 · doi: 10.48550/arxiv.1909.01408 · pith_short_12: 2Q7RR3VJ2WHI · pith_short_16: 2Q7RR3VJ2WHIIAE5 · pith_short_8: 2Q7RR3VJ

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/2Q7RR3VJ2WHIIAE5E63GAOV7DT \
  | 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: d43f18eea9d58e84009d27b6603abf1ccdb5d37b6440d014821513e4fa7c934f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d4cd0f02ecbc65f8fea132f53ebcc420a92fede2d3a71d8226e2bc2b091397f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-09-03T19:12:29Z",
    "title_canon_sha256": "86bb303d0ddfb3307f69a20d36e7d19c79bb064b83b95f9976271b21b91a38e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01408",
    "kind": "arxiv",
    "version": 1
  }
}