Pith Number

pith:JR2J6YRF

pith:2025:JR2J6YRFVAQRAJUYYRSENYJCVV

not attested not anchored not stored refs pending

Deep Chandra X-ray observation of the isolated black hole OGLE-2011-BLG-0462

Aldo Treves, Gabriele Ponti, Lara Sidoli, Sandro Mereghetti

arxiv:2507.16359 v1 · 2025-07-22 · 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{JR2J6YRFVAQRAJUYYRSENYJCVV}

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	2026-07-05T11:41:08.037295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c749f6225a821102698c46446e122ad69ffb4d4be03631562c97ba89823d6eb

Aliases

arxiv: 2507.16359 · arxiv_version: 2507.16359v1 · doi: 10.48550/arxiv.2507.16359 · pith_short_12: JR2J6YRFVAQR · pith_short_16: JR2J6YRFVAQRAJUY · pith_short_8: JR2J6YRF

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/JR2J6YRFVAQRAJUYYRSENYJCVV \
  | 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: 4c749f6225a821102698c46446e122ad69ffb4d4be03631562c97ba89823d6eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb5477c1cb0fedadb249a6c6a6b745d237d2a1ef6b8ef062b561bf66ce7e8d76",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-07-22T08:46:45Z",
    "title_canon_sha256": "fab3651d890fd0023a77c7c08406bca78649046bc1a8281b2be1b65651c1ebba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.16359",
    "kind": "arxiv",
    "version": 1
  }
}