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 0x5f72bbdbea700f0f72743cc888456c9c8d600336c00a66081678d3a23b1c72b8. 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/b050d0f3-5f80-4e8f-a0b3-525f71648cbf.json and https://artists.proofprofile.net/proofs/artist/b050d0f3-5f80-4e8f-a0b3-525f71648cbf.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 0xbf7724933f1ac31c23a2adc0bb8f05c44e9df1f9fd67888236e20b2daa9267a5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USDY41849082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c70c4f469a290446bb7a7c8f2d5acbd3f41f8bcbc794e9b79bbea56de39dd7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGJ1858690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e199c79f810baf6048a04e345ce94d7c75ccc8c439c43b453dcb2a1c6b3d7c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGJ1858700.
Cumbia Peruana del Perú para el Mundo (En Vivo)
Unidos Concierto Desde Casa 4Ta Edición / Me Gusta Todo de Ti / Estás Pisao / Tu Fiesta
Parranda Continental: El Delincuente / Traguito de Ron / Sarita Colonia / Llorando Se Fue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63007383998c38299716ceb9116a132f84b9a36f67684d0db854c3e60e35b67a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZHZ62197485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11045357c59d3fdeca6e994cfb28f87da8af31030a918b4ff292d3ae48c972e. 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/QZHZ62197486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443bd75c295561c84a1533b0172015ff9385c9b67ee4beca14020470d35ef37. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZHZ62197487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a296d4648de77e8df96c232bc0ae22301321a4c7e275c617e3374ed2190c3d3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZHZ62197489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8c9e474469189f062e75c006c39918833394ab1aee96c6b8fa735763ef6ee. 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/QZHZ62197490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63007383998c38299716ceb9116a132f84b9a36f67684d0db854c3e60e35b67a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHZ62197485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443bd75c295561c84a1533b0172015ff9385c9b67ee4beca14020470d35ef37. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZHZ62197487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a296d4648de77e8df96c232bc0ae22301321a4c7e275c617e3374ed2190c3d3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHZ62197489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c364569e07f2531b3ba89a9f45871baf9dfaaf27938412e5ed1e04571e212d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHZ62197491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe3f3b29222ee31c6b9c4560c6d7671a92e15ad4206b77cfd5997a1efd64da. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US7VG2247304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75f068663c9c0abf77ef2ff97dec3ee8b60d0765f3bf230acc82d778fbdd20. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USLZJ2210797.
GRAN ORQUESTA INTERNACIONAL (BENDITO ALCOHOL (ALASKA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf74c6fb19416c725359cbec0c91d42dff710cd5cbcffd23d8e3d7de39ffc38. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWU2284765.
Homenaje a Rodolfo Aicardi ( Que No Quede Huella, Como Voy a Olvidarte, Tabaco y Ron, Ojitos Hechiceros, Vagabundo Soy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d80352ba36b3cabf2ad2455f0abef55d19608b07ff346e16755a1476636aa95. 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/QZMZ92342476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba67c4cd09d4b0cc386d293e9ab24baaca168c9b4a7af9675d04d526949c36de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJX2336965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f10e6dc2e69c43ed6402332926614ffbe15176d6786fab759281805b3bd9e. 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/QZW9L2320564.
Mix Sobre las Olas (La Gota Fría / Las Cajas / Sobre las Olas / Fuma el Barco / Muñeco de la Ciudad / Burundanga)
Parranda Amores Perdidos (Ojos Negros/Amores Hallarás)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b28e3e9ab412b950a8714db898758844d73b5ef171d37bbc480df999ba0b688. 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/PEFR31905052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7a22d3d0415097fd5124d4190bdfc2e7a1fe7de7f21a976c260bbefb24f8b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PEFR31905054.