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 0xab427c8f938eb86ab06031c1e535b145e4bb97fe88aafffe422c523406d5bce6. 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/2a6d5b08-965c-49ff-9252-ef290261d053.json and https://artists.proofprofile.net/proofs/artist/2a6d5b08-965c-49ff-9252-ef290261d053.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Villancicos infantiles con Cleo y Cuquín
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 0xac4114396f293cebc3eeb46b6c5a1cd2d89bd9ed3ed02e3c67c68fa81c27b059. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USLZJ2334781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3937cb6700aac83b169a2c95c37b690c7b57f66f579d5fcb829a2c02684469. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:56:58Z), 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/USLZJ2335136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e98d40a740aae37dab4642be9b01c15f2d6ed248e7f5d2b2670ae23e4f54ce. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBWUL2356970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1688f610a13ce683166fab4508406a29e69d50d19bc1d7d6393df4136d80a605. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBRKQ2271081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb898d8be734974cc23e5ede7786eda53b7aee5c7e90cf8687887a8e5d105ffa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USLZJ2335145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee90872c93fe4d26bafb241d43c46f3f6e3f2610103c061b1642ce288926ee1c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBRKQ2271059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad752f3477686f2cf61a2906e02101bbcf98d5a5a06d733d73437112c7eab92. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:08:34Z), 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/GBWUL2357326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ed719d0473ace92d1d6ce32d384dc2208d7f80841737b46518c39c8f90f3a5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBWUL2357420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aeeb7b319664bb6f7bb25115440e5bf6e3f384b670c0ffd0388442de9710a0. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBRKQ2271069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3ff40cfbbae886efec03a7851a1bbc486d7c01b43f78775b924b8ba1e2fec. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBRKQ2271085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eb89f061c4431920985d211f2fc69549c5a00fd44cddc71bb5fca320f6b734. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBWUL2357573.
Canciones de Halloween con Cleo y Cuquín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612bac86a6b60cf6ec202b27ef3bc7a51d4084a3f588d58974d8afacb2d2e875. 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/QZWDE2360812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6a66d15e7074bd2585b5db3f455eeda5546157d3ea65aae7c806e59b0fcc59. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZWDE2395626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee478059ee8370bcb16534882f5705f1923d92c22637112798bc94112f7a8683. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWDE2395630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035cd6685c90a1fd6350b5b60dfd765b7215b917702d06fe0225a6b83b5b6588. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWDE2395631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293bcf13cad4410d9d4f76ab36f5a0a566c1b4ec3ca1532c411cea5557cacd59. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWDE2395634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd760f680a8656f679bdfa241d959f51d762dbfe9908d825131391e81dfbf8416. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWV32330530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622bfe4872786279661708c9b6b4adc7d8856caeae8bbad194fd9d5ffa875287. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ8B2349159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce1ae8b14eb3a9f34ca8746d1422f0eae7f98eed0eb762fae821013edbaa0ee. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZ5FN2494894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8feba3c5bc23251b83f2e4fb9fe0e399fd8373a05058e74c8278c718837844c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZ5FN2499590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b6260010df9f3704b884d1738b89af939dd5a8bc1ed231bb113f242487507. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:31Z), 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/GBWUL2356934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5355e8157c995194bd64417134fb40f354448a8aa60b557e276a3e59a1363e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTRX2445049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d40f79fb5198967d8e84effe2cb7b9441b8db8eca475098fe3d70a9defc3f4. 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/GBWUL2357242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1b35c2400847767efc1cb0741cabffa011192a0ae441460668ed96d51a7f69. 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/USLZJ2334756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ba23d189bc6fdb93088ee4953566edb3c4ed89988646a0a10450b1b9fa29ad. 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/GBWUL2357294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068e7dbb14aa78645a7733d23ed028d92883dcf0fccf2728759747db993fab8e. 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/GBWUL2357541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8359a8166864e0063291918ef0649f0a6d289622f3b6d6865aef3d306a0b8ecc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:26:13Z), 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/QZTRX2596213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf3b42e360a34c9c972794afd4d789457c92ab2ad39683f3ac8ceac4c78209. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTRX2595744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f4403e864ca67743e1a38b3a48a724574a97a6e5d37da97a6e4b2fdb6e764. 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/QZTRX2595869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45e08cba6770fd488cb5f3c623dcfd77c4ee0b416ecc68560acbc9c190b8c5a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZTRX2596009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe051f95cba81a5b003a03b3efa8a25ae55e97abb62973f49e8760dda63748. 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/QZTRX2596323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e3a4d0c8aa06fbbff7fd823ef274ad5b68bda584962e7fca2c466e3a29e6c2. 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/QZTRX2596598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0325581ad5a05c8e69d0ffbc81e9720e3b1c4cd39c4c81e2436dc8fe3afa3f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBRKQ2271055.