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 0x7dee8d904654bd5e5073444f4b778a9ca36aa0f84d77a450c2aabe5b74877deb. 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/a9ed3ad6-7be7-4ccb-9b92-48613383ece3.json and https://artists.proofprofile.net/proofs/artist/a9ed3ad6-7be7-4ccb-9b92-48613383ece3.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 0x2a7db6ba84d5416eef8ee76239b72c0606e2ad3c6d22f5d81676f137d59750cb. 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/GX8LE2318994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017269a5132b6b85ee358c08e8e8eb0ec5aeb0b365ead77bdc406c599d77443. 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/QZMZ92402272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a39a5aee29e20a2094514303898d34a3100a2aca194c8cee4b9e6b493d8f727. 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/GX8LD2323054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7249267632cb74bdcf81685b6d402a0ddb3cf7a0e1f099d9ed4c50305829c8bb. 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/GX8LD2309244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6131cda25018362f8d4e9b29cfb84e81c6bada1e059a25477b2b86d965e9e. 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/GX8LD2310254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6fac0e3feb21190ca3ef67c632c2e89e8667954fb1f175a2766974ca84c01. 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/GX8LD2382868.
Los Reales de Plata (Revolucion ranchera 1987)
El Calientito - Revolucion ranchera 1987
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0ed1e91c5d55cb4235cb6b9de1cbf4d23c42f745f9cb49371d8f96778176fe. 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/GX8LD2390287.
Cuando Te Vayas - Revolucion ranchera 1987
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaa19b9df983ec3acfa1e0b4213609cb22426f79a82f961e2c61b4cdb87bec5. 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/GX8LD2332381.
Los Reales de Plata (La ultima parranda 1985)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6597e9db68290b1fac2b768e7ae73d172133d0492a4d54dcfaf73f322ad6ab. 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/GX8LD2391257.
Contigo me quiero Casar - La ultima parranda 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22490cf49f3549b45284fcb886aa54c280d4d882ad7ab87a9cc1a221b1da20f2. 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/GX8LD2350473.
Regresó mi Gallo Tuerto - La ultima parranda 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf97f36484d84a07552d76121fd3955fa61d67826f30aff436db28a1afdde5. 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/GX8LD2358823.
Perro con Rabia - La ultima parranda 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57eee78fe85e73440cbb26010bc10476bacdc198a1029d83b5a92abafbe0065. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:07:44Z), 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/GX8LD2329312.
Abrazando mi Botella - La ultima parranda 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f631a84c3de7effbde8267ec8d0363d46b6433aec023b9c492e73a84ef50355. 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/GX8LD2389777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5ea67aa860537f49b01b27b3d1c57f3d3681fa74ec49c3b58739930c6bed4e. 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/GX8LD2347912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500718c766af320a9b9e4cb96e1bd2c48bade6c2740d036d07fb99826cb76484. 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/GX8LD2330690.
Corazón Desamorado - La ultima parranda 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf72996d22e0030d1e26f7db64659617b5d2d218ed8b69324046a6e19d9975f7. 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/GX8LD2399395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf329d89735658388fd4ffb390b996f8efc1c3b175f5f96927b5a6dbaaddfdfc8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:37:45Z), 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/GX8LD2308372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966114090af743a3e4116631175846bb281c7c38204a1b3788a67ebe30c88fde. 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/GX8LD2395240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609982224364e40806d43c34abc62c5e7c3416b23abbb176e1015687b9b786a. 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/GX8LD2370433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b360ee3b1639251fa63127809e2751e65236c88cca849dc9de15ec6f31b5189. 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/GX8LD2301379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf52c89e8ae6b46e59cdc27cfd0c2fc1de12bb1d75678f1069d46826f1f1abc. 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/GX8LD2301622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259b84d5128c7d24d031ccf40d666a962f585f22ff35468d624f910de924ad9f. 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/GX8LD2348792.