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 0x4583f4e8b839d0953f4f1b75e9835a4813816434c0be10b44bb836bae526930c. 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/d8945152-05f5-4107-8f52-1867bca75c1a.json and https://artists.proofprofile.net/proofs/artist/d8945152-05f5-4107-8f52-1867bca75c1a.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 0xc4b304ebb53b42d78e47162a88e77f5dbd690554bbc389c9a95d0a5795eeebf3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEML70900165.
Mono 2 Stereo - Basslovers United Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d01ce3adda8a0e7ef2034629f8ac1833a9411dde9e3785d9132ff4aed9482f9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEML70900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c20d1745328a5fe115ccca5a27acfb7cedbc45f754e563fcc6b1a6b30b9477. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEML72000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b603f9907e88429ce92d5d4c9b4f71df773f1b8cd82d3ca623991c751656f5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEML72000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49386f74f609ada0adc12c43e6c61a2a813ea2feefff81c2325303296914aac2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEML72000055.
Schwerelos 2k20 - DJ Gollum Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd77f287ef17e64bcce2636b01f974c6faceba51353b75f695287ffee883f129. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEML72000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca695d9c6e454f31b49465745246c3b820b82c86d6a89a6013b4a3019728e3f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEML72000057.
Schwerelos 2k20 - E-Partment Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652aa7060cccc6e360759b0a405bb6bc5c8b67ce1f1ab3034581797fb0e6f153. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEML72000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11504009e253120a50f5a0fed4372a0db86b8f563401c7d1421a7037ead5ee32. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEML72000059.
Schwerelos 2k20 - Raindropz! Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2b2fcab39df28023d7679bbb7e3e7647452df981fae6e617200bc68dfa44d3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEML72000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e6948142b89ef25f4cad6c056220b10f565b4163fa722513f4a861f795ba1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEML72000061.
Schwerelos 2k20 - Cloud Seven Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54829987bc281520858836ed2811dc66d2ed363689aca32c8cc7e168a00458b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEML72000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5817d35ef93fee0e5b6b292d9e01900d217775be38d07f066c0bf1f8f549f481. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEML70900544.