Pith Number

pith:3PRCGYMC

pith:2015:3PRCGYMC43OKJ5HCYRQTMLCGHH

not attested not anchored not stored refs pending

Spectroscopic Studies of an Ultraluminous Supersoft X-Ray Source in M81

Jifeng Liu, Song Wang, Yu Bai

arxiv:1508.07651 v1 · 2015-08-31 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3PRCGYMC43OKJ5HCYRQTMLCGHH}

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	2026-05-18T01:34:31.753938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbe2236182e6dca4f4e2c461362c4639e4b02d36ed29c720bc6f3073a85cb7a2

Aliases

arxiv: 1508.07651 · arxiv_version: 1508.07651v1 · doi: 10.48550/arxiv.1508.07651 · pith_short_12: 3PRCGYMC43OK · pith_short_16: 3PRCGYMC43OKJ5HC · pith_short_8: 3PRCGYMC

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/3PRCGYMC43OKJ5HCYRQTMLCGHH \
  | 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: dbe2236182e6dca4f4e2c461362c4639e4b02d36ed29c720bc6f3073a85cb7a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "638db7f27e94432f5093c433b64b99b59ab4203b76f5f4d671cd3af845b71f87",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-31T00:21:59Z",
    "title_canon_sha256": "15b82e842138b75325634e961a9abaca335489db7b2e2ef54a7f1ae617af15df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07651",
    "kind": "arxiv",
    "version": 1
  }
}