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 0x3260111b4be2e6a67d1fd981a394ba198a75f515775c75e3b027da73672d2501. 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/d215bd2f-ec12-48e5-832e-5c71ca316a45.json and https://artists.proofprofile.net/proofs/artist/d215bd2f-ec12-48e5-832e-5c71ca316a45.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 0xbf3bd7f2bf5bae5e05f4739557ac0282c996c945c2e58ef7faca540259742ed1. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USANG2117686.
Popurri Sones - Arriba Tonichi - La Barquita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b003716b0c7a694ec21991ef76b6725cb18205a502ccede2e65568b1832ad0c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USANG2117688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87ed71f6bb5fa6b80a9514163480da63815ac3fbb9cef5e7f961337374bf26. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:31:38Z), 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/USANG2121303.
En Vivo Desde El Rancho Norotal (Takedown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2963f96e752042514cc9c68f1b09bf46e91564ba96ed6b77917b8860054f928d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USANG2176122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb361812686f731a68c67978dd016cfbdd00dba6b55b84bbd44860382d0f46bbf. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USANG2176123.
Popurri El Rengo Del Gallo Giro / El Alazan Y El Rocio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaeeeda0acd8d054dfc6cc0042d6cd9ad0268d54a5d61ab348256826bdc635c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USANG2176124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6be0612cf8ddd6856d2ab3ee9350f88f4f8d462b3de583db89a0602658cb9be. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USANG2176126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7212e868d5587c32242613253f72f1d9471703565b7c72d92f1922d56c5028d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2176127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026675f5d983df3ceae340b5bd065e91d8af5d39d89d6223fde9760e486f246b. 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/USANG2176128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7797303fd83716e07f75be68173d59e60bc5021fa9bfcb76ba6816a70fbb61fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USANG2176131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740266d5faaa926e15b0606c19c1378e59c25f5d337e42130010fdc3caf1b0cf. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USANG2176132.
Popurri Mi Gusto Es - El Sause y La Palma , Me Gusta Tener De a 2 - Una Aventura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb8d0618740073cda49ce03276e102a72bf1955735f8a67d5b2bc4dc00e4511. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/US3DF2207469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ee9716e5458583f604302944cc6324cd29114f9f173810aceaf9b1b85ee8a3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/US3DF2207470.
Popurri El Pavido Navigo - La Loba Del Mar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498650e24f49269ad9808dff49b0d0df14ed6915b573cbd84e2ac036a73fd3a. 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/US3DF2207473.
Popurri - Pena Tras Pena - Como El Primer Dia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fccbe2493681377d508e20c2d733bb7eadc27736b3326b61e906181a058f436. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF2207475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a55f3520dad0d1f2d5223e5ac6b48016e4a7f4adb0bfcba1196ec048a725d0a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:09:06Z), 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/US3DF2207479.
Popurrí Cumbias#5: La culebra/ Que Bonita/El Sauce y la Palma/ Toro Mambo
Popurri - El Muchacho Alegre - Catarino y los Rurales - El Huisache
Popurri Valentin Elizalde - Volveré a Amar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580ca5b284ca8173b90f604a1a8249f09ac2668149c13c9698ccffd7a819a40f. 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/QM3DF2271236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5428aab2f6c15b79c7509b005b45779b1ee891e0ad8b9c1036dbac4d03be1d7f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:31Z), 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/QM3DF2260371.
Popurri Cielo - Reproches Al Viento - BONUS TRACK
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4df891278ec8d28614050b7012cb892432d563848d536473bcd1d4a0d63267. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US3DF2505751.