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 0xdfa7f603ab901458a3b0be87a87c77c2ecb3a75a69d21ae65ce57d1809b9689c. 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/6f1a0d54-b1a9-489f-9f3b-1a943f390953.json and https://artists.proofprofile.net/proofs/artist/6f1a0d54-b1a9-489f-9f3b-1a943f390953.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a2bb317ae5bc0dfeaa59d622096ce5b0c7f57eb3c3b4ec55d1f240dae77a00. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/MXF151600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c5ce2c53324038cb26abc88a4da454fa808e04b5d1df7f57d021689de7fdee. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/MXF151700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff5f3146f7d6bbc2551527bd5c3d728a574a70533f02231319f84edc801979f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF151700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f8c39a935ba5186579331e03f8ab654a7f2469078129c60ccfd721307406ee. 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/MXF151700566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9513b0392fc012e43dd7aa82bea7f9845cacb2a700f306f86d14d9e861f38e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:14Z), 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/MXF151700568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42190563664c28ef79d47edf43ca13513612a50f35e88e95b3ab32f75fd23c5b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/MXF151700569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b7d523195e34e505328a7ba2aa082ba7b218c64a682e8f3340fdfd18f75be. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:34:26Z), 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/MXF151700572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d57714b04f5b0b00bddf8f37e34aae120be5bc46c78ea5c7888b39b57a907b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/MXF151700580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae254edbadc271c478a3e6fe6d9fb4f0fce15062b02a6174cf868a3e7c4af809. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:14Z), 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/MXF151700581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe035102dac3e1964a7196150934e5664f0a60edf49380b6869ac87fa0adf67d6. 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/USANG2440328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6c16e601404b54b6a71468d0bbbce2c6b59152c6dbbe8c6f2f6f9ca52ea9d. 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/USANG2458833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785a6ffa1c777571ba538220b500f61052cdee061f2fc0e5c88f25e789adad2. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USANG2491070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aea8b7b3c15eb96d1e532b609d81af488f3c8bcebba4f7d4e3e34763e20445. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QM3DF2417757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a55fd2759d974f060170e8769c27a4611b446904f872a34016cdce310fe7922. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US3DF2511647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb3a4a198c41dde5f207dd0303a59930af3a0a37cbceb2829dec67194dd490f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US3DF2587867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd8f29d96c7ef3b788ae2113872684d18046c33e278038f0ca96d8b61d13ec2. 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/QZHZ51954094.
Esta Vida Me Encanta Remix (feat. Smoky, MC Davo, T-Killa, Don Aero, Tanke, Little el Crack, Big Metra, Santa RM, Zimple & DJ Maxo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47c1e92ea6509e47996f0dac0209fae1a455fb9d3acd88cff2b1705c604ea4. 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/USUYG1023091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb8fe4cbff6fd64014df95b129528cb858e32f15963c022b9b0ae43d0369ce. 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/MXF151500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721556338b91d3760f992fd3cec53447525ba21d8303d55af7bde63b9711da5c. 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/MXF152300427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1929e33e9ac6f384964ef3b93c5ff0e218fa05c6b960e002b3a401e91e3321. 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/TCADE1735939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0273024e5d037ea98fb6203fed0a110940f4d00f121d816c60d0f154e7217b. 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/QZES61947706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a39f10644baa785423916c4dfac545fb93237e0137aa6b3bb45918a16c0b9. 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/QZ5AB2251773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a39f10644baa785423916c4dfac545fb93237e0137aa6b3bb45918a16c0b9. 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/QZ5AB2251773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2aceef844fa19f0fbb9c2cdbae615ab8b4d5ea8be3003f6a23eb202fdb0f63. 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/QZHZ61916663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2ebd5a3ec8b60106d39f7d6700857c4010fd9f223da81680905b340eda6b15. 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/USDHM1707846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1580bfe546067387a4f48baea6243c5f7e3cc647bd68912dce8798d403f0361a. 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/QZW9K2244158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81904a906a5b74ac52fd70c70629672d2bf8707509aa8faf0ce0614974f67a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3DF2472593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731c27d24293bfe570f94a2be61a0ca81b63432496435605d0fe01f6c827ff8b. 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/CZUM72100553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d197e7fc97dfd7d4e9aabb11a2c7b7af1002cad35d55172c65ee695428654b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCACK1556368.
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 0x1fe2b4b7ec15d33c58a44d40ee5b52852c75b040b1ee38fcabf088ade12b8f44. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMZ92366951.