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 0x0b18d4a20991528d83885010ae58f43d808d050aef53fb758c7d17e7cf418c5a. 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/9c512310-40c5-44a7-ae73-836cf2241107.json and https://artists.proofprofile.net/proofs/artist/9c512310-40c5-44a7-ae73-836cf2241107.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 0x8094e64b13d55cdc113bba3670871cb6be2a8cb4978eae8abe91660fdf11de04. 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/QZGWX2046814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fccf63900a03a01b36e67e05dc47b25b8d95d7633adae90f66be32a4438653. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2186797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc76c10e4f855bdeca14fa0c854e83f09a22b37106832a5ae36612af2129408. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2186798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fccf63900a03a01b36e67e05dc47b25b8d95d7633adae90f66be32a4438653. 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/QM3DF2186797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14a7407b15da9f5c6159e9c50fe6c8c0563236072bde62bc67492c706144a75. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:05Z), 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/QM3DF2186799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe709d87c9b8fdde132c48fc0a213917d7aeee3aebc7a2f1a6034986d07e6b94b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US23A1544802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff0753a391cae4d773e8db260f9a24da83f1bed62f90105778c8e421766a427. 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/USANG2202902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c48a13909624ee9bdc489f9213f5bb04e86f47201c2acc092b012580dcefac. 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/FR9Z62100884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d36e17ba6140581bace3e34da1a82be68337d9f51f7f77b7459014f4507de3. 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/US3DF2275766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a129a42a8aa15b663d6c5390719bd8fab206de1661385ecef690739d5e74f14. 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/US3DF2275767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a129a42a8aa15b663d6c5390719bd8fab206de1661385ecef690739d5e74f14. 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/US3DF2275767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8ba3e30d90d88774e4be48186592c9880ce2c30ffab093ab4a2085ef66a46. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2208416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fc610be4069b9240e697bfa59a5f281b5c9118e667e4735fc61df042df8aa. 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/USANG2208419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8ba3e30d90d88774e4be48186592c9880ce2c30ffab093ab4a2085ef66a46. 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/USANG2208416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5ed86f91f4b4eb074b129b99fd24082a61e77ac871f0f7679a17d55b6817b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:20Z), 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/USANG2208417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca59e8eded66b3d1ca15077342e8ca06474dfe43777ac55a4448a45c0d82171f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USANG2208418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fc610be4069b9240e697bfa59a5f281b5c9118e667e4735fc61df042df8aa. 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/USANG2208419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f4c2e8c46a9b0dcc0188f3ae1ba32e05a7b94773545eb17b25ef5a3551821. 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/US23A1556394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f4c2e8c46a9b0dcc0188f3ae1ba32e05a7b94773545eb17b25ef5a3551821. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1556394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bc51cbd84b9349fdeaf0dcc1fd9f76478a1e043f04eaa7275655f141dcaf6e. 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/US23A1556528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f93c73b15aafea00752694c4f969e130702154e38ea4983bf0380b4f80b038. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US23A1556527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6b9bfa19bad26be5e97624b6ea955741325148de8afef078a09f5883eb535f. 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/USANG2253286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6342cc9c032b387590bf0c1c1184bba37086dee3efdb59b814471f7ee14a57ba. 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/US23A1559527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432c7180c03215caf56bd0fecc31ef2a4f934c726e9506bab8707f6587f8cfbb. 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/US23A1572208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142662dd63f98a4d94abc0bfa19b1b65ccb2973e4b775bbdeebc9cabf12aa42d. 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/US23A1578843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa182586e87151f2f090f14526c9d69601eb392d91e2b9837e275b73d62ec1c74. 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/US23A1578846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa0b5a8513870b1614ab9684ddd5a6c4a7cbe3e62e58f095732342a0bbcc45e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/US23A1578844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a328e5801071d86eaecd13f6a1ef018f2c8b0dfc9ba2979e900324b84144e58. 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/US23A1578842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da48ede851352af286f41ada22a5c8b407ff86bb6131dc3a839dbf7bc2e92b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9Z62400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48ed3101534e3aaf8b5f7aada9730d83aa5d1fa61dbd0dcc8a66e868c8c8f5. 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/US3DF2465314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742efe8d15f5a726f1a06ee48066ee60d9f9c05e668fe2d3b5ea3aa6acce8a2. 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/USANG2480676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf400574e6adccc5094e6fbbf378c570081e64251bc48639ccaeae5916c83cc3. 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/US23A1591652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a1d2e410855724977bc1544b7854ea4c24fe8720cdc60ded3ab34c21a8f7c. 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/FR9Z62500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9528b198f3cda60e826e22fdc24c1d82a622d3cac034004f75c38b2135d79164. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:40:10Z), 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/US23A9729334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730120a86d94fbf1db62bab7a14ae6422bf00dd8abf5dea45a57088d61c138c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:44Z), 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/US23A9729332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328befe4281e514d5d3705597d9f997d8f02b3c855f0195924bf967ae6924b3. 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/UKZGC2307381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da48ede851352af286f41ada22a5c8b407ff86bb6131dc3a839dbf7bc2e92b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9Z62400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9290d9bfd2ce1747016369149a5f015dbb183a55d0f590f5b4ea054b1755f5f0. 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/UKZGC2406296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1accb6d819411efdd56ff66363b1434896aeafe2292aa8c6d0d48d2a7f61888f. 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/USANG2408143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9bfac82677fd12c88958a8210646d7c27cf6969165c9aac4a6ab39248f4833. 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/USANG2412764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f58716f65be820506ccea7b04ade40bc9c12b774f0bc05a1d96aff709b3aeb. 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/US3DF2440230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94a521c3dad63bc247b6c69adebbd9f402a78bca3736aac0a38b0573b1e9a3. 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/US3DF2440231.