Pith Number

pith:7JFM42X3

pith:2021:7JFM42X3UEWYU54V4TFVVCOCZB

not attested not anchored not stored refs pending

ALMA observations of doubly deuterated water: Inheritance of water from the prestellar environment

A. Coutens, D. Harsono, E. F. van Dishoeck, J. K. J{\o}rgensen, K. Furuya, L. E. Kristensen, M. V. Persson, S. S. Jensen

arxiv:2104.13411 v2 · 2021-04-27 · astro-ph.GA · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7JFM42X3UEWYU54V4TFVVCOCZB}

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	2026-07-05T02:53:42.976697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa4ace6afba12d8a7795e4cb5a89c2c860801fdc2e5b0a8e8b00948f000e1eba

Aliases

arxiv: 2104.13411 · arxiv_version: 2104.13411v2 · doi: 10.48550/arxiv.2104.13411 · pith_short_12: 7JFM42X3UEWY · pith_short_16: 7JFM42X3UEWYU54V · pith_short_8: 7JFM42X3

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/7JFM42X3UEWYU54V4TFVVCOCZB \
  | 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: fa4ace6afba12d8a7795e4cb5a89c2c860801fdc2e5b0a8e8b00948f000e1eba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de400ec084c384d1117094d50d274a3c07a0376048f2b3214592fa0bfb32112d",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-04-27T18:11:44Z",
    "title_canon_sha256": "d29cf9f68403c944ffca6cffaea923bac06c946d12a7c3d0217b2275814fabf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.13411",
    "kind": "arxiv",
    "version": 2
  }
}