Pith Number

pith:MKE2FRDW

pith:2015:MKE2FRDWPDCB2IHMGEYTV6SB3L

not attested not anchored not stored refs pending

Multi-color optical monitoring of Mrk 501 from 2010 to 2015

Dingrong Xiong, Fang Wang, Haojing Zhang, Hongtao Liu, Jinming Bai, Tingfeng Yi, Xiong Zhang, Yonggang Zheng

arxiv:1512.08302 v1 · 2015-12-28 · 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{MKE2FRDWPDCB2IHMGEYTV6SB3L}

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	2026-05-18T01:18:38.845740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6289a2c47678c41d20ec31313afa41dad93c9eefa8e5619b14a2212a1534d49f

Aliases

arxiv: 1512.08302 · arxiv_version: 1512.08302v1 · doi: 10.48550/arxiv.1512.08302 · pith_short_12: MKE2FRDWPDCB · pith_short_16: MKE2FRDWPDCB2IHM · pith_short_8: MKE2FRDW

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/MKE2FRDWPDCB2IHMGEYTV6SB3L \
  | 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: 6289a2c47678c41d20ec31313afa41dad93c9eefa8e5619b14a2212a1534d49f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc84f3ea81bae550f5f5c2371b05bfd8a3f39787bdb160938b55b65cd15f7a0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-12-28T02:08:37Z",
    "title_canon_sha256": "5a6ce027675a69d824b5f65a2385a18a8eededca971f40cffb415e5a6a3cddb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08302",
    "kind": "arxiv",
    "version": 1
  }
}