What makes V100 recordings tamper-proof?

Every V100 recording receives an ML-DSA-65 (Dilithium) digital signature the moment it is finalized. The signature covers a SHA3-256 hash of the recording content, the creation timestamp, session metadata, and participant information. Any modification to the recording -- even a single bit -- invalidates the signature. The signature is 3,309 bytes and uses lattice-based cryptography that is resistant to both classical and quantum computer attacks.

Can anyone verify a V100 recording signature?

Yes. V100 provides a public verification API at /api/pq/verify that allows anyone with a recording ID and signature ID to verify the signature without accessing the recording content. This enables third-party auditors, courts, and compliance officers to independently confirm that a recording has not been tampered with.

Does V100 sign transcripts and AI summaries too?

Yes. V100 signs transcripts, AI-generated summaries, and meeting notes with the same ML-DSA-65 Dilithium signatures used for recordings. This means you can prove not only that the video has not been altered, but also that the transcript accurately represents the original audio and that the AI summary was generated from the authentic transcript.

How do Dilithium signatures help against deepfakes?

While Dilithium signatures cannot detect deepfakes in content that was never signed, they prove provenance for content that was signed at creation. If a V100 recording has a valid ML-DSA-65 signature, it proves the recording was created by V100's infrastructure at the stated time and has not been modified since. A deepfake of the same meeting would not have a valid signature.

TAMPER-PROOF RECORDINGS

Tamper-Proof
Video Recordings

Every V100 recording, transcript, and AI-generated summary is signed with an ML-DSA-65 Dilithium digital signature the moment it is created. A 3,309-byte quantum-resistant signature combined with a SHA3-256 content hash provides a cryptographic chain of custody that proves your recording has not been altered -- today, tomorrow, or decades from now when quantum computers exist. No other video platform offers this.

Get API Key Verification API

ML-DSA-65 Dilithium (FIPS 204)

SHA3-256 content hash

3,309-byte quantum-resistant signatures

Why Tamper-Proof Recordings Matter

In a world of generative AI and sophisticated video editing tools, proving that a recording is authentic and unaltered is becoming a critical requirement. A video file with no cryptographic provenance is just pixels -- it cannot prove anything in a courtroom, a compliance audit, or an insurance investigation.

The Deepfake Problem

Generative AI can now produce convincing deepfake videos of anyone. Without cryptographic provenance, there is no reliable way to distinguish an authentic recording from a fabricated one. Dilithium signatures establish provenance at creation -- if a recording has a valid V100 signature, it was captured by V100's infrastructure and has not been modified.

Legal Admissibility

Attorneys increasingly challenge the authenticity of video evidence. A recording with a verifiable cryptographic signature and chain of custody addresses the authentication requirement under Federal Rules of Evidence 901(b)(9). The signature proves the recording has not been altered since capture, and the public verification API allows opposing counsel to independently confirm this.

Compliance Integrity

HIPAA, SOX, FINRA, and insurance regulations require that records maintain integrity throughout their retention period. A recording without a tamper-proof signature could be challenged during an audit. V100's Dilithium signatures provide mathematical proof that recordings are identical to their original state.

What Gets Signed

V100 does not just sign the recording file. The ML-DSA-65 signature covers a comprehensive set of data that together form a complete chain of custody.

Recordings

Every video recording is signed immediately upon finalization. The signature covers:

SHA3-256 hash of the complete video file

Recording creation timestamp (ISO 8601)

Session ID and meeting identifier

Duration and file size

Participant count (not identities, for privacy)

Transcripts

Every transcript is signed independently from the recording. This means you can verify the transcript's integrity even without access to the video.

SHA3-256 hash of the transcript content

Reference to the source recording signature

Transcription engine identifier and version

Language and speaker diarization metadata

Export format (JSON, SRT, or VTT)

AI Summaries

AI-generated meeting notes and summaries receive their own Dilithium signature. This creates a three-level chain: recording signature, transcript signature, and summary signature -- each verifiable independently.

SHA3-256 hash of the summary content

Reference to the source transcript signature

AI model identifier and version

Generation timestamp

Chain of Custody

The three signature levels form a verifiable chain. An auditor can trace from the AI summary back to the transcript, and from the transcript back to the original recording, verifying integrity at every step.

L1 Recording signature (video content + metadata)

L2 Transcript signature (text + reference to L1)

L3 Summary signature (notes + reference to L2)

Each level can be verified independently via /api/pq/verify

Verification API

V100 provides a public verification endpoint that allows anyone -- auditors, courts, opposing counsel, compliance officers -- to independently verify a recording's signature without accessing the recording content.

verify-recording.js

import { V100 } from 'v100-sdk';

const v100 = new V100('YOUR_API_KEY');

// Record a meeting with tamper-proof signatures
const session = await v100.meetings.create({
  name: 'Legal Deposition - Smith v. Acme Corp',
  recording: true,
  transcription: { enabled: true, diarize: true },
  encryption: 'post-quantum'
});

// After the meeting ends, verify the recording
const verification = await v100.pq.verify({
  recordingId: 'rec_abc123'
});

console.log(verification);
// {
//   valid: true,
//   algorithm: "ML-DSA-65",
//   fipsStandard: "FIPS 204",
//   hash: {
//     algorithm: "SHA3-256",
//     value: "a3f2b8c1...d4e5f6a7"
//   },
//   signatureBytes: 3309,
//   signedAt: "2026-03-28T10:45:00Z",
//   chain: {
//     recording: { valid: true, signatureId: "sig_rec_abc123" },
//     transcript: { valid: true, signatureId: "sig_trs_abc123" },
//     summary:    { valid: true, signatureId: "sig_sum_abc123" }
//   }
// }

REST API verification (no authentication required for public verification):

terminal

# Public endpoint -- no API key required
curl https://api.v100.ai/v1/pq/verify/rec_abc123

# Verify a specific signature in the chain
curl https://api.v100.ai/v1/pq/verify/sig_trs_abc123

Use Cases

Tamper-proof recordings are critical in any domain where the authenticity and integrity of video evidence must be provable long after the recording was created.

Legal Depositions

Remote depositions recorded through V100 receive immediate Dilithium signatures. Both sides can independently verify the recording was not edited after the session. The three-level chain (recording, transcript, summary) provides complete evidentiary support. Addresses authentication requirements under FRE 901(b)(9).

HIPAA Healthcare Records

Telehealth session recordings that serve as medical records must maintain integrity for 6 to 30 years depending on jurisdiction. V100's quantum-resistant Dilithium signatures will remain valid for the entire retention period. Combined with V100's HIPAA compliance and BAA, this provides complete healthcare video integrity.

Financial Compliance

FINRA, MiFID II, and Dodd-Frank require that certain communications be recorded and retained with provable integrity. V100's Dilithium signatures provide cryptographic proof that recordings of trading floor communications, advisory sessions, and compliance meetings have not been altered. Auditors can verify independently.

Insurance Claims

Video evidence in insurance claims -- property damage assessments, medical evaluations, witness interviews -- must be provably unaltered. Tamper-proof Dilithium signatures eliminate disputes about video authenticity, reducing fraud and accelerating claims resolution. The public verification API allows adjusters and investigators to confirm integrity instantly.

Signature Technical Details

For security engineers and compliance officers who need the specifics.

Property	Value
Signature algorithm	ML-DSA-65 (Dilithium)
NIST standard	FIPS 204
Signature size	3,309 bytes
Hash algorithm	SHA3-256
Security level	NIST Level 3 (128-bit PQ security)
Quantum resistance	Lattice-based -- secure against known quantum algorithms
Signed assets	Recordings, transcripts, AI summaries, meeting notes
Verification	Public API at `/api/pq/verify` (no auth required)
Cost	Included on all plans at no additional charge

Tamper-Proof
Video Recordings

Why Tamper-Proof Recordings Matter

The Deepfake Problem

Legal Admissibility

Compliance Integrity

What Gets Signed

Recordings

Transcripts

AI Summaries

Chain of Custody

Verification API

Use Cases

Legal Depositions

HIPAA Healthcare Records

Financial Compliance

Insurance Claims

Signature Technical Details

Every Recording Signed. Every Transcript Verified.

Related Resources

Post-Quantum Encryption

Encrypted Transcription

Post-Quantum Video Encryption

Tamper-ProofVideo Recordings

Why Tamper-Proof Recordings Matter

The Deepfake Problem

Legal Admissibility

Compliance Integrity

What Gets Signed

Recordings

Transcripts

AI Summaries

Chain of Custody

Verification API

Use Cases

Legal Depositions

HIPAA Healthcare Records

Financial Compliance

Insurance Claims

Signature Technical Details

Every Recording Signed. Every Transcript Verified.

Related Resources

Post-Quantum Encryption

Encrypted Transcription

Post-Quantum Video Encryption

Tamper-Proof
Video Recordings