Pith Number

pith:MMBW7FYY

pith:2013:MMBW7FYY7MPJD2T5POFD5PHTU3

not attested not anchored not stored refs pending

High energy emission of GRB 130821A: constraining the density profile of the circum-burst medium as well as the initial Lorentz factor of the outflow

Bei Zhou, Da-Ming Wei (Purple Mountain Observatory), Hao-Ning He (Purple Mountain Observatory), Pak-Hin Thomas Tam (National Tsing Hua Univ.), Yi-Zhong Fan, Yun-Feng Liang

arxiv:1312.2662 v1 · 2013-12-10 · 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{MMBW7FYY7MPJD2T5POFD5PHTU3}

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	2026-05-18T01:45:52.283536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63036f9718fb1e91ea7d7b8a3ebcf3a6debe983be8e773f7d9d4a0c6a745d407

Aliases

arxiv: 1312.2662 · arxiv_version: 1312.2662v1 · doi: 10.48550/arxiv.1312.2662 · pith_short_12: MMBW7FYY7MPJ · pith_short_16: MMBW7FYY7MPJD2T5 · pith_short_8: MMBW7FYY

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/MMBW7FYY7MPJD2T5POFD5PHTU3 \
  | 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: 63036f9718fb1e91ea7d7b8a3ebcf3a6debe983be8e773f7d9d4a0c6a745d407

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec44418b6319427039fbcae2f0d5b744fae57c3814bbe8a9cff729d733e7e358",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-12-10T04:19:22Z",
    "title_canon_sha256": "ce0120b99c3d437a767d96fdea6ee4c4410012410b8db7a058554e100564ba96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.2662",
    "kind": "arxiv",
    "version": 1
  }
}