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 0x8780800ebda252e0c8118605dd47b5b2c554699d6b5efa4b15e2c67168846c03. 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/a8245077-e000-42a8-baf4-edc134d61ab2.json and https://artists.proofprofile.net/proofs/artist/a8245077-e000-42a8-baf4-edc134d61ab2.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 0x854add14b0744cc93edd5e843c44bd2ad1d16900fb4b789afba29d2e63989d8c. 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/ESA011781319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ce1e99bf04a8a063df178ce94489efce496b862bfb37aa3d64b4f0b9e2d2f. 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/AR5UH2301306.
Olvida Su Nombre / Nuestro Amor / Me Matas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c80fc66de7120948e1a7ab70a6ae9e871d583f566a5dbb25441f6470272022. 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/AR5UH2301123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc147d353d12e6c33312c4f74c76ce357c0da9650d0f73a6f4bfe66fe8a9a526e. 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/USANG2280139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f82aeb2387a6eccdba1bbea0d68ce34bcce5bcc9c8a5c0f95d4583005d06d6d. 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/US3DF2285969.
Entre Nosotros - Una Noche En Medellín - Cosas Malas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a843b4706e78003bf8225ab6b4f2dddd3f30d648e9b51a3751318f89e9ef687. 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/US3DF2236737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce144d1232a311a8829f7ac825bfbcd524930d3c5c02b08c395cff2b68a99f2f. 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/QM3DF2190333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180b01c6aa90ee756bf670c80c6109ca90f5bb02550300a85618120847bd9ff. 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/QM3DF2121722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180b01c6aa90ee756bf670c80c6109ca90f5bb02550300a85618120847bd9ff. 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/QM3DF2121722.
Qué Le Pasa a Mi Ex / Salgamos / Pobre Diabla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115f8405bb3574dfa91a04349d860b3b5db61b96ab1c3a680cdf1149ab7b1f42. 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/QM3DF2132079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7404f134645a9dceeafa9d7f4f97cd81922c497de387c1b46bbf5864a6ba23. 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/US3DF2177436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e45c36f35dca430a7ea51f2de89192f7abb99197b130d210a7894c4c5d200b. 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/US3DF2101343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acc345565d3121db19c58a020739aca0d18da1b9eac6ef599c025f72777201b. 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/USANG2122003.
Relación / Tus Besos / Sensación del Bloque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83a9c46bac1889bd05a5ec1563d03535a2ff6f4c91320a2e6cdfe3f9bc0c339. 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/US3DF2093436.
Elegí / Bellaquita / Yo Que Te Amé (Acústico)
Como Llora / Ahora Que Te Vas / Regalame Una Noche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2886d8c8c38e2843186b1f72edb12e35b0cfb7835959c4abc3b30df5fea2fbff. 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/US3DF2006999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2983ad798e89cadd9ccb37bbcfd869f6e20a7d71d8f43d43162d27ef47b9c0. 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/US3DF2007002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2947808dc16dfd476c8493fd9ee0c378737e7424c9f43926f3f17aae1a4a83a8. 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/USANG2025039.