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 0x059bef2a6488d03d441a9d0b7814e6c5dc0a0f310ab487698987a685f7446c0a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ecd83a4-c0ce-4cbe-89e5-3bd27a06b36d.json and https://artists.proofprofile.net/proofs/artist/5ecd83a4-c0ce-4cbe-89e5-3bd27a06b36d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Día Que Me Quieras (with Jorge Falcón)
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 0x6c7ffc14e0151a1f70be49dc050f113f56bedeb1c7af24db0168bf493ddcba33. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:04Z), 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/ARF109700640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a499dddedd9b3398f5a2a5c03802317922ca25b43417f0acb753c5036f3d7e0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:50Z), 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/ARF100900198.
Caserón de Tejas (feat. Jorge Calandrelli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c29de4afa5decc7eb861351e3ca1cd706a961aa4aa36e610fa967b2bb7eca. 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/ARG601011868.
Melodía de Arrabal (feat. Juanjo Domínguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520cd6c18e63a0a578af86e67da1da6788c86e4ee5d5aae445823ba6abb7b754. 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/ARG601011869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f032d8183853610c97675461501136b3efe923f73de8469579a6778a220f949. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARG601011870.
María (feat. Walter Ríos & Ricardo Domínguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b27f99ef823db2a3bff72baa66207b5b77e2938143ec85ee541a84bacd68bd. 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/ARG601011871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273cf25b75d0d4e4c45811385be507752a26d522e344a01965a15c444486c40f. 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/ARG601011872.
Malena (feat. Walter Ríos & Ricardo Domínguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cedff824dfda715a74cdb117407be6e2ba810b78a64fa5c45ce63e92a759136. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARG601011873.
Canción Desesperada (feat. Sexteto Mayor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7080e6b4a3170a39b60f91a4f26c2950ab01fd755ac632ef3aece241c85d9a0. 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/ARG601011874.
Milonga del 900 (feat. Walter Ríos & Ricardo Domínguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7767623a5753fb6cb9aaf8732babd7c25378c154fc02b6b02b214285ae41c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARG601011875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b91133f4d377a767128956cb783ef03180216bd7085140606d34c0dfbc8b62. 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/ARG601011876.
Rebeldía (feat. Walter Ríos & Ricardo Domínguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23349157be6eeba5527b0c64273b7bccbce23256d60225616c9a9f4ddcc9bf84. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARG601011877.
Los Ejes de Mi Carreta (feat. Lucho Gatica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d888cc13083c5c8b2918d4de1b07d49199be2d2c7f20a72df1d2b97fae5797c. 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/ARG601011878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164fc68885139d2ab26c7b4b716eb58ad5f8298074fdc6da3cd54a94bbdf6c0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARG601011879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc748d57230a10325328fcd2b645b1b92de2c22e4232aa1b9f8b12e7d5a502b2d. 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/ARG601011880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ac290f242139ec2e44f092401bbe517869077e1e7b9312fe788c74f924b85. 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/ARF070700906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7945382580e58431d757cd4dbb80ad5d7c19906cf4408216e85e7914a2abfc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARF050300644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cefe070fa63686cf42d9a99fea3a20071377a82ab95ca40b74406ab28b47616. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARF050300648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246bbaeb12a340504ff75b0955e688ee528da1cf36fcdb068bd3af52b2569f63. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARF050701106.
Yo Soy Maria (Grabado En Vivo En El Teatro Alvear En 2002)
Yo Soy Maria Grabado en vivo en el Teatro Alvear En 2002
Yo Soy Maria (Grabado En Vivo En El Teatro Alvear En 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1226d66b0f054de4447dcd751cf754ed98b0e1cd164176a717fe1df96d647e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF100900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e66f5af06cd75e66e44f984789f5693413c1f5d021675e975b3bfad32417ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1608477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1755685e32747d3959537511540bc6826cb77419a88ded1409903a3b4a050b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AR8L71300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e8ad3a56895335b8dc510846472e7b54b34baede62446dce482f74e6b8df68. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARF390900743.
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