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 0xc400b616956f8c3063c6cde5fceac1f0bf72d8578c4adb78ff165f4469934d49. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08dcc334-19a3-4dce-bce8-e8a3e32f9b9e.json and https://artists.proofprofile.net/proofs/artist/08dcc334-19a3-4dce-bce8-e8a3e32f9b9e.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 0x5b0ee43f155d3f8f0ff4391faa7ff586904a79cfa1239795c84fefc6aca2f594. 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/CH7812198283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3744d82fb8e03d4b461f049fdfe25c5e0b8b2af79c9c89bde99ed8bc3f68b9b4. 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/CH7812198284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bd9ea869b6db534d60ae7ea44cef038437f20896c94faf0c9ee5799a448279. 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/CH7812198285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c1ed5efe806fd6e43842b3045eaed2332343600997b55e325a60dda3438197. 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/CH7812198286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb01094a372eccfa193896be99ea1d8c477b940723b75812b502db3b51e3cc3. 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/CH7812198287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00644bd383091fa291e183d2315c2a4a5f8e933f4d822ef3c94233735117fd95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812198288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd6e47290f1b224f04a7efd4a0deb4f1840d0a3da07e6eb223d40e2378973a. 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/CH7812198289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a05860df4fd6b101cdf1a6bf2fc92dd36fccce323ba5d35758617c79ed053. 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/CH7812198290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884060ea64fc5723b972b9727da2be47ebd63460bae4ae27c757c4946960c76a. 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/CH7812198293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2888e76799410e83ad603411353d4f776ab3d1922a3d6c075cddc8cf1fc935. 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/CH7812198294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2575be4d38b43927909c2a73932e8245d56036e896d3a68689f49bf108b38505. 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/CH7812198296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de8b4c13d42b925031f065ce0366222acb4fb3ab9d810cc8150bbe56d86bc8e. 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/CH7812198297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca4cbbcc98086948c98b1eb0b22fa43232883effd2c346f9bf3a61b7b8cbeb. 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/CH7812198298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed21a188e6fdf86cfab7c4687e8eb3633a7e3a82b9856ff25b6cce6ab447717. 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/CH7812198299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb70fc6509634772a3a96427e3a92b8f88e92e1c1854debf339886003532d9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CH7812198282.
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 0x764fe07e348fda1b45b3d0f07a69b0010d00c912d94614fdeff3e0372e80eb70. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/CH7812198291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be39b6f602c9f70966a8279e1ef91ac8425e348b4f529735043d8ad94e30d12. 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/CH7812198292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461e208d0f2b3fe2fa7c1410b64ce65eb0d5c0912bf51fabfe9e5225bc9dc80. 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/CH7812198295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec587a1c1bee028d4960b30ec9366edb4b6b3ed3b890893880af23371690b6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEBL61210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d2c41ef8effd41c87bb910a1bb74bcc798ed35304f2ee078219a38a220b090. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:01Z), 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/DEBL60334273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0a2f0a423e4b243d77595a4953794bbbe8e269a70855bef9ed236b7e86c68. 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/DEBL60334277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5127e15762226b106dcb6a353b9907110d3ea8db1814f117fd1dfcbad7b136. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEBL60334278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bd7ade7c5ae3ff2ff8fead063b87b9cdb49c0f060a5ca0a671781c257507d9. 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/DEBL60334284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2364cc68d7d3326e44e92dfdd42ce848d11c62f29fe9eb8e1d2f036f24e58c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DEVY81700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3608063653a032b85ad5287a52580f9499dfc98b67690fb8ffb42a9b7e2c53. 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/DELJ81509943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271398b5f92d602f22e129449dc739cf3419ee96466a51dee6c1bea9ca48c76e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DELJ81509944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e76cbb64df5d15780872b13b52c3e5dfeadde279906422ed094885317e9bdc. 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/DELJ81509946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1abc28a173e718c39aec6faee4c20556386813c2528ad38f8dd1e6ffa85cba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DELJ81509949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe05ced7853440dfab37dffdb5a078e832f4c3d0d8993376b76dd83111dd27e. 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/DELJ81509951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eac63ea33d70a60a34cf74c762c95a91e0a6b32906602dc9fd13234d1e0ae1c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:42Z), 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/DELJ81509954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed799bd81cf7484f4d0220daa3bc74e51082b5400d87b693f392900bb387c795. 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/CH7812197179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c76426744e05d90347772562dcdf874ea08f02606c67d5b3e6708215fbf42. 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/CH7812197181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5402be0d2f898478345d72f0325d039d6d943405d55bf8bb72eccf360597c1a3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH7812197182.
Das Leben ist Saad - 2 Track Single 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c4db4b5e30b1566f047220ab37223b2e2a3c68aafa011eb7b101030045950a. 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/CH7812198486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d6b56dc8cea2c88a14af7b929a5cbe3f26aacecf7b57b26e3191e060ac6bfe. 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/DEVY82400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff10efac2cd1bece4af15390b95b7fb3d020f74319b3be3eba699a019aa085e. 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/FR59R2307031.
Vendetta (Ersguterjunge Sampler, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e61bcea7676434ce8f5b3b61c44e852b9f2d47861d6630c8e4feecab2fb49. 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/CH7812190903.