Pith Number

pith:JE5LKB74

pith:2019:JE5LKB74NROYN4LDWEHVZL4NHU

not attested not anchored not stored refs pending

Unprecedented variability of Sgr A* in NIR

(2) Max Planck Institute for Radio Astronomy, (3) Caltech, (4) IAA), Abhimat K. Gautam (1), Andrea M. Ghez (1), Anna Ciurlo (1), Eric E. Becklin (1), Gregory D. Martinez (1), Gunther Witzel (2), Keith Matthews (3), Mark R. Morris (1), Matthew Hosek Jr. (1), Rainer Sch\"odel (4) ((1) UCLA, Shoko Sakai (1), Tuan Do (1), Zhuo Chen (1)

arxiv:1908.01777 v1 · 2019-08-05 · astro-ph.GA · 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{JE5LKB74NROYN4LDWEHVZL4NHU}

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	2026-07-05T00:08:36.178466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

493ab507fc6c5d86f163b10f5caf8d3d0ed9098ee98ac09a934cdb404daf7767

Aliases

arxiv: 1908.01777 · arxiv_version: 1908.01777v1 · doi: 10.48550/arxiv.1908.01777 · pith_short_12: JE5LKB74NROY · pith_short_16: JE5LKB74NROYN4LD · pith_short_8: JE5LKB74

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/JE5LKB74NROYN4LDWEHVZL4NHU \
  | 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: 493ab507fc6c5d86f163b10f5caf8d3d0ed9098ee98ac09a934cdb404daf7767

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f825b7c6bb2a8fb5c39748f245fd1f8bf40b4ab0b7358ee2c3be38e10a39d1f6",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-05T18:00:10Z",
    "title_canon_sha256": "1d13715f83722b17cd96a1b1b4fe747094095d0d54680d07a9c2b9839127ec69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01777",
    "kind": "arxiv",
    "version": 1
  }
}