Pith Number

pith:76HD3SC7

pith:2015:76HD3SC7NAG6I3TJ6T5QCFPXXG

not attested not anchored not stored refs pending

Measuring Ambient Densities and Lorentz Factors of Gamma-Ray Bursts from GeV and Optical Observations

Andrei M. Beloborodov (Columbia University), Indrek Vurm, Romain Hasco\"et

arxiv:1504.06369 v1 · 2015-04-24 · 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{76HD3SC7NAG6I3TJ6T5QCFPXXG}

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	2026-05-18T01:28:05.255585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff8e3dc85f680de46e69f4fb0115f7b998dfd7934ca5591240d3029496b17adb

Aliases

arxiv: 1504.06369 · arxiv_version: 1504.06369v1 · doi: 10.48550/arxiv.1504.06369 · pith_short_12: 76HD3SC7NAG6 · pith_short_16: 76HD3SC7NAG6I3TJ · pith_short_8: 76HD3SC7

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/76HD3SC7NAG6I3TJ6T5QCFPXXG \
  | 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: ff8e3dc85f680de46e69f4fb0115f7b998dfd7934ca5591240d3029496b17adb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdd41f0bc8830b40a21604964dca00a347d3adaac8959f2f6294881127eea1e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-24T00:12:04Z",
    "title_canon_sha256": "ede75e7fa4a42fb80cefd2e4088b667846dc0f993685ad955ce5d7c839959f5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06369",
    "kind": "arxiv",
    "version": 1
  }
}