1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084835a0fd9ae8b5dc8107036733720d76b4b13fa4ea42d919caf269e54d918. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d738616a-ecea-4e22-a664-6bdd68185591.json and https://artists.proofprofile.net/proofs/artist/d738616a-ecea-4e22-a664-6bdd68185591.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
I wanted you to take care of Me (feat. HATSUNE MIKU)
There's no way I can Lose (feat. HATSUNE MIKU)
I Like Chilled Chinese Food (feat. HATSUNE MIKU)
When Does Love Turn Into Love? (feat. HATSUNE MIKU)
Actinobacillus Actinomycetemcomitans (feat. HATSUNE MIKU)
I can't find it even if I look for It (feat. HATSUNE MIKU)
Timing is key when it comes to Charging (feat. HATSUNE MIKU)
The End of Summer and You (feat. HATSUNE MIKU)
Let me look at your Back (feat. HATSUNE MIKU)
I want to try Again (feat. HATSUNE MIKU)
I want to be someone's Healing (feat. HATSUNE MIKU)
Beginning of the Morning (feat. HATSUNE MIKU)
Directionally challenged Song (feat. HATSUNE MIKU)
2 minutes 30 seconds (feat. HATSUNE MIKU)
A box of mandarin Oranges (feat. HATSUNE MIKU)
Are you okay. are you Okay. (feat. HATSUNE MIKU)
If you look at the sky, today Too (feat. HATSUNE MIKU)
Responsibility and Judgment (feat. HATSUNE MIKU)
Running down your Cheeks (feat. HATSUNE MIKU)
Meow meow all the Time (feat. HATSUNE MIKU)
You don't have to try Hard (feat. HATSUNE MIKU)
Love shake hips shake Hips (feat. HATSUNE MIKU)
I can't go back, I love You (feat. HATSUNE MIKU)
Throw away the Letter (feat. HATSUNE MIKU)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e76e0217c93cceb9bb14adc519e36b1324c1ea71fe1c2f1182c3a9f6ee4105. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPE2580991 — a six-check JSON result.
The sound of the Wind (feat. HATSUNE MIKU)
Street piano in the City (feat. HATSUNE MIKU)
I want to be a star (feat. HATSUNE MIKU)
With Music on My Side (feat. HATSUNE MIKU)
Something's Missing (feat. HATSUNE MIKU)
Love Me Until It Hurts (feat. HATSUNE MIKU)
Love health checkup (feat. HATSUNE MIKU)
Rhythm Game Survivor (feat. HATSUNE MIKU)
ステップオンスニーカー (feat. 夢ノ結唱 HALO)
Invincible Dance (feat. Yumenokessho HALO)
Let's make this a summer we won't forget (feat. Yumenokessho HALO)
To the same sky (feat. Yumenokessho HALO)
Let's cause a big incident (feat. Yumenokessho HALO)
upgrade for two (feat. Yumenokessho HALO)
I couldn't bring myself to say, "I love you" (feat. KASANE TETO)
Good morning! Good morning! (feat. KASANE TETO)
Can I have another serving? (feat. KASANE TETO)
Bullet full of wounds (feat. KASANE TETO)
They're going to resolve all the loose ends, right? (feat. KASANE TETO)
Because today is the only day (feat. Yumenokessho HALO)
Love You Hate You (feat. Yumenokessho HALO)
Shining Night! Move it Night! (feat. KASANE TETO)
The night ends with the light of my smartphone (feat. KASANE TETO)
There are many things I enjoyed (feat. KASANE TETO)
I can't find Misokin (feat. KASANE TETO)
The same morning as them will come (feat. Yumenokessho HALO)