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 0x45ea8257d8ddd5ed386e90f59f44342361e303aaa393b9b78c072188506bc6c9. 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/09f3ed92-2f58-4dc7-9101-168a4f0bf892.json and https://artists.proofprofile.net/proofs/artist/09f3ed92-2f58-4dc7-9101-168a4f0bf892.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 0x1929bc255087336282395a1a9ab2d498cfdcba6513304c287e47035443c5b8e8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UYC241800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d18605443150fad9efc5c29688f24cdfb6c3dbf86db2fb0f0248c2c13916931. 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/UYC241800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20eee2bdfeb039fc7e0907a2d75188301946255a000f034b0d6e6c74c5c59cb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USHM81987626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7571a628b9f15eb2cc115198ee449f8e026e8148be00a5df19f434d206b662a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4Q1936488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e7a30733b3da91e60654bde9b7bd2c0e84f4af3a3d0382ee7fd8b49546c5c2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYC242000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331920d9f7b65a74a5823a913a237a486c04be49c3ba0b01070790a9e06bb9b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UYC242000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e7a30733b3da91e60654bde9b7bd2c0e84f4af3a3d0382ee7fd8b49546c5c2. 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/UYC242000002.
Zamba de Amor en Vuelo / Piedra y Camino / Anacleto del Viento / La Cerrillana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb7eaa70249f4871644be5f70fdfc27cd5621d4fd89a99d29280782626f0886. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYC242200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c3bb9ff6b4ad0144afde21b3c1c7431d5ff0b02497e13fd7c264eb5f0115e8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/UYC242200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d17deafdb048ac9d940c5495686931a21eecc5a369f8547cac068178a1cc71. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/UYC242300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2612111e6244021534f0c362947d00b0d5615047f2cd3b3253257c2e6ed2d8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UYC242300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619450452ce24802e233b02170067c1395e280357b06de6516f334d67a4b3787. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/UYC242300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31484f8b48febb6ebf59f748684f3d4e03442db4c4af85b6e235da993b77e534. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/UYC242300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7eb60183b34c28d9a70cddf82943df280bd3a692d6e125175e720e9893dd2f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UYC242300006.
Zamba de amor en vuelo, Piedra y Camino, Anacleto del Viento, La Cerrillana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d013e01a42f907d30758b09b47eb829ad9924a9a3f2a6dc652c312e42c919b5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/UYC242300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f586deec379cde34ea833f10d3cc541aaac88d7932cdf968cf00eb92a53dcd1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYC242300008.
El Toro, Km 11, Gente de Ley, Así de Baila el Chamame
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d28ea695764a13c89eae2bf42d4a9ed1437edf76b748575ca02942ee5ab37c3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/UYC242300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4bc156acf9ce2b841a8e1ab34812e96ac3376a8c02156449252c6b6e09350d. 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/BXLMB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167615a0c1ffac273dcc7348a1af8dd659036ef7eb7a4c71d588e3811a45e8fe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UYC242400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83089b126d8d3119881c7f5faccb4da7472e4c1b8d03ba37e54b99b0116517. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UYC242400004.
Adiós Mi Salto / En Tu Imagen / Zamba por Vos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b202eabcfb525da58ac9bd584369c7a3c166770636a77fa8fde2e0519cda04. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/UYC242400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd2e816d41d3d21fbf4d2e8761834444ed7f659239852f7e86c5b6cfad7211. 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/UYC242400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8967bd06cdea6c92dd2638bd6143b70064c65abf601707c3b712db06a995d585. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UYC242400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36b0befe36d7fcada69b3c1d943dd31a70f936ccb70fd8dcb642926e5920521. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UYC242400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298da32e59e259e0888a977efc11bb0b1b13a995e99d52e8f4db489f565b7044. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYC242400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94c96dd9d7d41e16961a5b8aae602a68a2ac869480130a4396fbe2490df4766. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UYC242400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7a606137ab8c130430c71d66aa8a3783ea1198da6cee335b4a0d58484e3b5f. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USL4Q1815935.
35º Rodeio Crioulo Internacional de Vacaria: Voltando pra Vacaria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b82187eb524ba4497524935a6443e0e62d82859f7e12a8020e58e96f4c8e2e9. 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/BCPC32300081.
Nunca Más A Mi Lado (Versión 10°. Aniversario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72af59a94702773d6c6ca249fbf2a58c711cdefb82fb9dca5cddb9ac7ba8f59a. 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/UYH122100030.