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 0x72c1dfee73910cbd803c1d1c4c705234f39fb21f0388415118f552441ec11fb2. 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/1721533c-9d08-436a-ade8-6cb1e12fa8d9.json and https://artists.proofprofile.net/proofs/artist/1721533c-9d08-436a-ade8-6cb1e12fa8d9.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 0x75849f50ba950d5b0aba5db81bffd7967cdc7720ea5e04fe1a5198d73647978c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US83Z2237223.
This Is Not a Simulation - Sterium - Sterium Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3163b26ecfe1d2b77c7223125c74940e4a794abf0cb03a7f5075f5d09a819c5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z2139812.
This Is Not a Simulation - Jay Mariani - Jay Mariani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6a1fc19aa54e6fc8203ce3997837dc14ac0a7bff3659779dc8af546123ff2. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US83Z2139813.
This Is Not a Simulation - Mochakk - Mochakk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4535a455d51c288b52bf99eec5ffc66971b8c74708aaed17743f1b14d83ed46a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2139814.
This Is Not a Simulation - Malive - Malive Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b14625343f6cb3279cae35e836c38d9aa03cb2b14ba4a42d138c52cf00f33. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US83Z2139815.
This Is Not a Simulation - Cesar Nardini - Cesar Nardini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c4822a93bc3e6de515afd4c3ede67314268279fd2409ecc4943085e806894. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2139816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9568b456322381d4d8577f2e3681ce03182eba3e799a7c3ee8f2522b671a2a2a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2025830.
Finally (feat. Julie McKnight) - Mochakk, Jay Mariani & Cesar Nardini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c233a4cc9cbc3fb0d2bcc1fabb53a70b4b2e00386d84d424181be8f8a3980d2. 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/GBCPZ2423642.
Finally (feat. Julie McKnight) - Mochakk, Jay Mariani & Cesar Nardini Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e362b92a7679c736cec9d22b355a4a8126ad79f5fa0f91f27775cca1bceae0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBCPZ2423373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7461448e373aeaaac0639e957d8b6aa32d22f01bb18ac95616c64c272bdd57d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU1990403.