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 0x35a6369320ad48fda86ba4ca08f2e05b96ed8ee9c92b3807e360973427925027. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cb9b2a9-e86a-4855-be8f-532a5e667fe3.json and https://artists.proofprofile.net/proofs/artist/5cb9b2a9-e86a-4855-be8f-532a5e667fe3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La cumparsita - 15 versiones - 15 grandes orquestas
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 0xa1ff7632de72be6beac9b8499b3f1926285590bfd8b0d9666093e4141e6afe4e. 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/ARG991009935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6441e63076c65074703d32582df7062e59fb2fa3c9db9a2605f375468decc5f. 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/ARG991009937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe420f1390803ec6be62809c22216ea56ceb9b2e373db3558109c0d29fef80d7b. 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/ARG991009942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb976f20272a9131bea391788b314e3f38d7a48eff40928365a9420d8acaf5b87. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARG991009943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71bac79533af1a84f041e65e6b87257bc41fbdd08b29929b8a75d16a0277be7. 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/ARG991009944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4e077f9bfcdffec7e2be13698b21c043ce78208bee5b0d3f2a9c623a8d1479. 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/ARG991009949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005cc9988b9197fc0704ada7a2406afe3ab4e76ed0670bd1933aa955f2af3649. 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/ARG990900991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d5c5cfb14c76022820a8b7c398adb89a0811d478725e3ed6aed8e9b6e8cc06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG990900992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef586f54fe88c3884d1406a892e962b1a939e1e8afcf5270b9ea55f89c5d6b. 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/ARG990900993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ccbcfd295793b2fb037a92f98a23d30fdba929d9ce4081c288713f8a4a4db9. 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/ARG990900994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab6f8fa3c2c734203cd09a2ed60ae5a5bc8b555f7e8a629d35dd393cb2ad962. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG990900995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e286922a348daeaa2731476dfbf41a9d060c981fc920c1154ba2596d7c7e9f. 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/ARG990900996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1607513815f8ffd6482ee16f77b8a195f272224ae2030ffc7405cdc9c8a655c. 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/ARG990900997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98866118ea217ce42eeffd734ad7c2cbc53d03d492db0701add036a1c773f3a5. 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/ARG990900998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f0665608e2e41cc9cf04ef3de45f2b04793f55d4fdf750dd2e7fc057a3da71. 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/ARG990900999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470c4e7f4c5e7ba3b15ca5e058589e2a6a3c4552223e60ce100778cd37cfbd61. 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/ARG990901000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2cebe6876654045de37fc9b33ac3738854f374adc9ab9227fb76cfa6165681. 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/ARG990901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4aa3f49f303f7087ff2fe6a3882c6a7ecd25e5fe9d9572097dbc9ced67379a. 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/ARG990901002.
Los exitos de Richard Clayderman interpretando a Federico Chopin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190c7679f9940be2da24c43fe2476bfad75bc0fecad453c844ccf4008bb824b4. 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/ARG991001834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a61ffb7587b1aab9ed740b70bee3663ee825b9a1ad681be41bd8c93079e34f9. 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/ARG991001835.
Estudio - Opus 10 nº 3 (cancion inolvidable)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac5aa4b8aa3226761c2df4179baa15515c4f9e126a2da396b76409411ecd76. 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/ARG991001836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa508fba989037810aac14e5babeefb4346e9777c5400cc08a21d869be7d661df. 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/ARG991001837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d50ddcc0f876c9417308e7f95ee850360366ff79695c757bf32fec28346592. 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/ARG991001838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0279f95d60bf72f6a9d2acbb350509de24045f6b2c9aea5e93809b3050be9f6. 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/ARG991001839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe172b37d48d5629d66300e8802b6415cd59f0ca5a29c742ed61150bc4f0f10e. 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/ARG991001841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e8f11c8684de5f53d8061a695b4cc06c97255f4df36ee9a8fb658bc26a7994. 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/ARG991001842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3103915b2a18fa79c92fd5ef07844d54ad42d9b7d3d86c9e31a12ff3f9531dd. 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/ARG991001843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1834d3c7b69f14eba040a0702d9d3f15caaa0ffd501b904efb5e9500b78a47c7. 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/ARG991001840.
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