Pith Number

pith:WM6IFDAY

pith:2006:WM6IFDAYN7DHT24KR3IXKUIEWN

not attested not anchored not stored refs pending

XMM-Newton Observations of PSR B1957+20

H.H. Huang, W. Becker

arxiv:astro-ph/0612594 v1 · 2006-12-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WM6IFDAYN7DHT24KR3IXKUIEWN}

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	2026-05-18T01:40:28.332983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b33c828c186fc679eb8a8ed1755104b37949e49f36e152d32525d467a55f553d

Aliases

arxiv: astro-ph/0612594 · arxiv_version: astro-ph/0612594v1 · doi: 10.48550/arxiv.astro-ph/0612594 · pith_short_12: WM6IFDAYN7DH · pith_short_16: WM6IFDAYN7DHT24K · pith_short_8: WM6IFDAY

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/WM6IFDAYN7DHT24KR3IXKUIEWN \
  | 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: b33c828c186fc679eb8a8ed1755104b37949e49f36e152d32525d467a55f553d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "316a9a5f0c99c5ab57a7608e69c9f792183c70b82945cb33c84d78446600d781",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-20T15:46:26Z",
    "title_canon_sha256": "f25d100e77504aa65eb0116fc3f667611cec9fbdbb61c351db7b4303e0f784ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612594",
    "kind": "arxiv",
    "version": 1
  }
}