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 0xa1bb0cf969c51132a28aa2a8f3c4d1273ea302946373fe24e79518d97be24806. 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/4625bf30-4267-4eb7-a861-8d26c588cdc3.json and https://artists.proofprofile.net/proofs/artist/4625bf30-4267-4eb7-a861-8d26c588cdc3.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 0xcf73ea5297a13afed4d9f2b1d3304df862e9fd710f8d6d468a8226a4d91d4542. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBSMU9235513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84e46c684d04d22f82142bfb57b96987f29e48992430390e88df91d0684ecb8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU9235555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc21df256f4a19e0a4c0f6f82ee5120672505281875acdf8143cea9f7887b96. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QM4TX1716199.
Mix - Yacaré: El Yacaré del Pantano / La Manzana Sabrosona / El Marinero (Barquito de Madera) / Cáigale el Guante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed486f1172039182551c03a9ad818abe337271b81a41c21900e1718d8db78d6. 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/QM4TX1716200.
Con la Tierra Encima (Cuando Yo Me Muera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9521f2f706e2f67e0521bb773e34758b1ece268ef775eee98f373eabc89f00b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM4TX1716201.
Mix Picaito: Chancuncha / Contigo Me He de Casar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e27363d3f0cabb2bb27fdfd4030759b248796494b356b6687218d9aa4bc997. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4TX1716202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c9b8c783ef798b75a70b23b42ea7ece763b73d58ef17eb9e5be19aba157285. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX1716203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1a81a16b3e6f800f9bd86fa5904453bd00d5c190f5840c83216eda0baea36c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TX1716204.
Mix - Homenaje: El Buque Con Más Potencia / Noches Eternas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037585ab895f3abf5f3f42b180d8a6999a24a0f68491bcba3a216b62242a329f. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/QM4TX1716205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc371944ee9d0351d61282133a9ee29b49e0349b5a98c69e9f6814553d5756. 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/ES71G1818516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee61119e54d4ce167a1526b283fa32c6d8d4a22097de89a3e1a02d3f4a3fae3. 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/ES71G1818517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c37cdb9cd0facf0bb34efd98260d67cb9c7b832f8d6fc7a416edc328a1dc5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ES71G1818523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf7808ea2d3a31d474a6c21a4770a6ae547157f2a74607e3f1a7664977f65df. 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/ES71G1927976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046f39284c92335df86bd7911fa5888b297ddb62941eb382c931774219c6094. 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/ES71G1927977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090f7a1edb20c2c1d8201fba7550e35ad2c0faffe08363c11bcf61088070eca. 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/ES71G1927978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe565bbf44d001e93ead7628bb89b4e71607d0984dc7e96bae98f23656deff9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ES71G1927980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429ece4daa14bcd3b167308ac118e7533be46bb095c93de7630f985cbdfb2afc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ES71G1927981.
Tierra mala / Cuando te vayas / El parranero / Un hombre soltero
Tierra mala / Cuando te vayas / El parrandero / Un hombre soltero (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee29d5272b877bd9ba7b5da3a240c62d815d6fc0b942b21e7f6426d4e7d6e07. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GX4R52131282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f86c230393eb1cbda2767dcb63a2fa985f8e03e9fb57699964749810553cca1. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZW9L2290477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d63f300c9fa64493a12f9862874d154a39a25d11127cd39f384e55098fb5bf. 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/ES71G2415250.
Campesina: Ay soledad / Guajirito - Larga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce13cf331377242ce40121c5d5f3312a477b128a006ea79a769afcf91b44a5d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES71G2415251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481343a8304d8a34cb1d96d5c5805cee9252890a0042365f534e9c5fc2997dc3. 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/ES71G2323833.