thumb|Audience in the Diwan-i-Khas granted to the French ambassador, the vicomte d'Andrezel by Ottoman Sultan Ahmed III, 10 October 1724, in a contemporary painting by Jean-Baptiste van Mour. A divan
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd493566c30c98b0bb5c7ac68c3ce95f65337e988769cab168dd103322ce94f97. 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/6927f774-0298-4169-9c64-1198a2287aa6.json and https://artists.proofprofile.net/proofs/artist/6927f774-0298-4169-9c64-1198a2287aa6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021385383166674b32b6872c39d0bd897a12461444d0c0422fa7d3cf7c8cdd42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITF252000042.
Te Amo (Versos Gastados) - Prod. by Cuban Deejay$
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada86ddbbc8b9c3bd8d2fde55d352421c2cb2b130f09d14907ef5838220d8787. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITF251800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a1c419de1bd9f32c50279fa9b773ac351fb92791f3826b40eab5bb05ddd5d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITF251900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e015f3ead708f9a906a48421bf8683ff7dc3a1f68d5aab2d73037b6a7bd7553. 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/USSD11700008.
Latin Hits 2017 Club Edition (50 Latin Music Hits - Reggaeton, Urban, Salsa, Bachata, Dembow, Merengue, Timba, Cubaton, Kuduro, Latin Fitness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5898385174cfd2dc1e55f250360d3b247e6195cdd24a8b9bd93c63f9354239. 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/ITF251700011.
Bruto (DJ Conds Remix) [feat. El Micha, Divan & El Taiger]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcebe0543f3b4e7dccbaf718ccb8234209b99270bf2d77b78a43dab0e5db1c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM81624771.
Boomerang - with Divan & Ky-Mani Marley (Prod. by Cuban Deejay$)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b2ae7d8e8504d8b8a42634bc36ce1a606bf6ea6d8f0705cf1c605ac790a9b2. 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/ITF251800130.
LATIN HITS SUMMER 2019 - 40 Latin Music Hits (Reggaeton, Dembow, Urbano, Trap Latino, Cubaton, Salsa, Bachata, Merengue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46049a194335f00a9ec0211a0d677a2d079da217114fb717390ebe71f0445fe. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITF251900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a1c419de1bd9f32c50279fa9b773ac351fb92791f3826b40eab5bb05ddd5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITF251900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11747cb1a08f5590e13e0e654fd02ed7829a9561c21900763b3b6060cb6309. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITF251900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada86ddbbc8b9c3bd8d2fde55d352421c2cb2b130f09d14907ef5838220d8787. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITF251800107.