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 0x06bc0e314ed3a0519c37b8e1a1312c491e1af62eafbaccacc67e3aa7e07791d8. 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/e7aec3af-3469-4983-9e70-1815c6a22a19.json and https://artists.proofprofile.net/proofs/artist/e7aec3af-3469-4983-9e70-1815c6a22a19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hotel Nacional (Gloria Estefan Instrumental Tribute)
Ass Back Home (Gym Class Heroes feat. Neon Hitch Deluxe Tribute)
Ass Back Home (Gym Class Heroes feat. Neon Hitch Instrumental Tribute)
Ass Back Home (Gym Class Heroes feat. Neon Hitch Tribute)
Wild Ones (Flo Rida feat. Sia Tribute) - Single
Wild Ones (Flo Rida feat. Sia Deluxe Tribute) - Single
Wild Ones (Flo Rida feat. Sia Instrumental Tribute) - Single
Better Than I Know Myself (Adam Lambert Instrumental Tribute) - Single
Safe & Sound (Taylor Swift feat. The Civil Wars "Hunger Games" Tribute) - Single
Safe & Sound (Taylor Swift feat. The Civil Wars "Hunger Games" Instrumental Tribute) - Single
I Won't Give Up (Jason Mraz Instrumental Tribute)
I Won't Give Up(Jason Mraz Deluxe Tribute)
Hotel Nacional (Gloria Estefan Deluxe Tribute)
Give Me All Your Luvin' (Madonna Instrumental Tribute)
Turn Up The Music (Chris Brown Deluxe Remake)
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 0xf7c271e10a60c5e223d14062c5d45a3894845806413a781c9f2f079037fdb010. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USA371635719.
Part of Me (Katy Perry Instrumental Remake)
Pour It Up (Tribute to Rihanna) [Instrumental] - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec644cce55a6eab32f2c6c6a3147f0d47b32c0bd3c88e940cbbaeb2c6cc790a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMHLZ1300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007839741e6fa7d38f743b4c737cff1ba26037cd503e6e62369c57b132ca7c2b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMHLZ1300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ba0e6cb7bbe4c3a6e7219a7b1feda48266a52e686d65cd43084a4b4c454cf7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMHLZ1300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7500ccff148e53e9a7fded9823c83a3d6bcc869c78b56f63642ec33e92e2ad. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QMHLZ1300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a09b8c9bac6da0bd38a35d966c38821727957ba18f68e64466503a1f836c53. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMHLZ1300151.