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 0x17ebf0f5a57ec5432184938f961f685ae63f0608ef82811614ea2775c49cdcfe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d4bc0ed-488d-42eb-9095-b44119e26154.json and https://artists.proofprofile.net/proofs/artist/6d4bc0ed-488d-42eb-9095-b44119e26154.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe5b8100a75c028f3a8b0a60755911b92ebc3ac273edf6ba8226acb889c67b2d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82102469.
Jujutsu Kaisen Epic & Emotional Music, Vol. 2
Mikey and Draken Theme (from "Tokyo Revengers")
Boruto: Naruto Next Generations Epic Themes, Vol. 1
To Your Eternity Theme (from "Fumetsu no Anata e")
Jujutsu Kaisen (Gojo Satoru Domain Expansion) Fan-made
Yuta Okkotsu Theme (from "Jujutsu Kaisen 0: Movie")
The final attack (from "Attack on Titan") [Fan-made]
Gojo and Suguru Theme (from "Jujutsu Kaisen")
Young Tiger (from "The God of Highschool")
Zenitsu Epic Entrance (from "Demon Slayer")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abeef985ddffde39eaf53b6a9bb12b810158c346c530e27f47f629605943b6d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32284144.
Giorno's Theme (from "JoJo's Bizarre Adventure")
Noot Noot Theme Mozart Lacrimosa (Epic Theme)
Cyberpunk: Edgerunners (I Really Want to Stay at Your House) [Instrumental]
I Will Beat The Strongest ("from BLUELOCK")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf20f1201c6af803109cc8d5d7ba30b7eef5c1a9e647673225909af0f76706f2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42314572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09a6f89ac86cd3f1022457c3e11f3684e549afd8cc37d476b077594ea4b8967. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2324264.
Power of Sukuna (from "Jujutsu Kaisen") [Fan-made Soundtrack]
Nanami Kento Theme (from "Jujutsu Kaisen")