Pith Number

pith:VEFANXZR

pith:2019:VEFANXZRHNS4ZLJHHXPPU3SBZ5

not attested not anchored not stored refs pending

An X-ray reverberation mass measurement of Cygnus X-1

Adam Ingram, Guglielmo Mastroserio, Michiel van der Klis

arxiv:1906.08266 v1 · 2019-06-19 · 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{VEFANXZRHNS4ZLJHHXPPU3SBZ5}

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	2026-05-17T23:41:07.595586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a90a06df313b65ccad273ddefa6e41cf6582699447d7eba54da271e659e2f696

Aliases

arxiv: 1906.08266 · arxiv_version: 1906.08266v1 · doi: 10.48550/arxiv.1906.08266 · pith_short_12: VEFANXZRHNS4 · pith_short_16: VEFANXZRHNS4ZLJH · pith_short_8: VEFANXZR

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/VEFANXZRHNS4ZLJHHXPPU3SBZ5 \
  | 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: a90a06df313b65ccad273ddefa6e41cf6582699447d7eba54da271e659e2f696

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3733c7f7fbaa0b375effb3aeac4ec9cbb0e3daaf8a440184138f380436cc778",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-06-19T18:00:02Z",
    "title_canon_sha256": "b901e37cfcc2361be4667b607cc3476e2bd6d42f20ed2d11c4b160f3bda0513c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08266",
    "kind": "arxiv",
    "version": 1
  }
}