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 0x966c7f7c8f7574c464681e5b1f545b988c6e334d00180c8756e851e33e725c61. 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/a4dd832d-83dc-45fb-b910-6f19ce4dea8f.json and https://artists.proofprofile.net/proofs/artist/a4dd832d-83dc-45fb-b910-6f19ce4dea8f.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 0x1ade29277e9482af27d1da9786a7d250208976ff265d30e21b655d9a99a12915. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCADA1721081.
La Maravillosa Ya Llegó (Ritmo Sabrosón)
La Maravillosa Ya Llego! (Ritmo Sabroson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633be8dc8ba9fad7d13609c07978702fa5b310e7846d5270ff7cb77a66773331. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:32Z), 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/USDXS1800012.
Popurri De Caballos - El Quijote De Don Chuy, El Palomino, Dos Vicios (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf3dfd2eef9e51a1551ad94e3a7a93c13dcd8f9214c3df10847abb26b2e6f12. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:25Z), 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/TCAES2009115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a56b77aedcf2b03712cfdaa547401012bb519e8f3b4a96ca36fcff855a59617. 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/TCAES2009051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c833f27834e03ed64b4d76b22fdca87a0d937c928b696db4256af39f9e240f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/QZHZ52013442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d72ee5adb9fce6cefae07cf49ac22414f8aab887ca46db94f846462330472. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZS7J2238689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea8155249b298892e3df667716453ac54f7e87f0df0458b57a42fd59fa2ebb3. 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/QZV7A2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac505664424c4c671d491135a311bcec7a1c981111c3d13fe49425d6aeca63c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZV7A2200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d9907b771f6ecc5de77f1da8333d385b96cbe64fff6bd7e4d32b2731d1893. 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/QZV7A2200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576f3b4d949c3b4788d33a3f03ea6ecdd25c03277a955cb1d791f57238a835ab. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZV7A2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f55c202c4a160ada0f0aff9d60297c5a47a513c78f5047be012f30e7b019df. 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/QZS7J2371486.
Popurrí De Rancheras: No Le Digas A Nadie / Al Ver Que Te Vas / La Milpa (En Vivo)
Popurrí De Romanticas: Mi Amor y Mi Agonía / Mi Eterno Amor Secreto / Amor Pajarito (En Vivo)
Popurrí De Cumbias: Cosas Del Amor / Negrita EAE / María de Jesús (En Vivo)
Popurrí Para Zapatear: Las Güilotas/ Sangoloteadito/ A La Antigüita (En Vivo)
Puros Popurrís En Vivo Desde Rancho Imperial
Popurrí De Rancheras: No Le Digas A Nadie / Al Ver Que Te Vas / La Milpa - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb608b68d4b003db5880c0ec5383d8927fc1962c3fae056487315c3c9edcb6c2c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZQAY2538709.
Popurrí De Cumbias: Carolina/ Al Ritmo De La Banda/ Báilala Quebrándola (En Vivo)
Popurrí De Los Invasores De Nuevo León: Moneda Sin Valor/Ni Dada La Quiero