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 0x8aac9a23b1634824c665817ca8f1e23be27c2e63576e9ecb4432ebf7e009afb9. 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/7dd43286-3d61-4366-ab2e-1aca010ea70a.json and https://artists.proofprofile.net/proofs/artist/7dd43286-3d61-4366-ab2e-1aca010ea70a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Break Away (Gowther Rap) [feat. Sky Limits]
Demon Eye (Sasuke Rap) [feat. SailorUrLove]
Like A Man (Kirishima Rap) [feat. Nightbreakeryt]
Jump (Hinata & Kageyama Rap) [feat. Freeced]
Breathing Style (Demon Slayer Trio Rap) [feat. Ninethie & Jeff Hopland]
Dead By Daylight (Halloween Rap Cypher 2020) [feat. Ninethie, Adam Purski, Sky Limits, IAMCHRISCRAIG, Freeced & B-Lo]
Greater (Spider-Man Miles Morales Rap) [feat. Gr3ys0n]
Locked On (COD Cold War Rap) [feat. DizzyEight]
City Of The Night (Cyberpunk 2077 Rap) [feat. Archer]
In Control (Merlin Rap) [feat. Knight of Breath]
Escape (The Promised Neverland Rap) [feat. Halacg & Carter Sauce]
Stone Wars (Dr Stone Rap) [feat. Sky Limits]
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 0x1b631498b0599ebaa18aeb9b0d21a61a3a0f0d0daa4e333824290d36a68c1857. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22107414.
Spotlight (Jotaro Rap) [feat. Jeff Hopland]
Split Mind (Itadori Rap) [feat. Carter Sauce]
Step Up (The Falcon & The Winter Soldier Rap) [feat. Darrnell Bradley]
Destiny (Neji & Hinata Rap) [feat. V!CE]
Number One Hero (My Hero Academia Rap) [feat. Galickz]
Broken Blades (Inosuke Rap) [feat. RAPKNIGHT]
Hope's Peak (Makoto, Kyoko & Byakuya Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7747a34f68ce40d2bd1c8fc8d4b9611822140a3c1a393459a19f86e4606a5a5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZHN72206709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c83a5956391660eb8c9d4c2fe37ae6f195d9d1dc53539db4db083e8c4e8c21. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6M2522133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a70c2a4e03100c451ede239ff3f8c637d690e7f40c498528ad0ab50da6fa6d. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZZ792553870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5e967a58d6e5fc83398ee0f5986dbd83d626b8e68603b3ab284ee8c23cb497. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBA2257859.