1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x287b8e42219311a99e5709d1f58407d8ee54a54d3eebaa5a3e1f72e82be620cc. 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/5444c530-4952-4b16-af05-cf8a5b1a206d.json and https://artists.proofprofile.net/proofs/artist/5444c530-4952-4b16-af05-cf8a5b1a206d.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 → block OTSBitcoinBlock must exist at that height 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 0x5e3df363cfa4529c42d86ca23dd2d3f4f7f325e1988e3fce048db01b9c909bd9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R1740736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8945a019e4e9ded1b8f0e8225f8591d064e6c0658480e3e7dd54e603254936. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:58Z), 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/FR59R1740741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21bdd484e2b61e58b3ab38080dd7c6f3e9a0643d487cd2a5b4b2f284b452c1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR59R1740742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bba6b83dce10a4f71b81d7d8e1c29ab46f9bb330daf6e08c2e08d1e22d435ab. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR59R1740743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7679ad3ca427b1bc63e7025662c8533ae6fb73c1edf94303382612a029128b5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1740744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b9dc12ab42d4d6cba2d3d9b3f75c4903851a974a2923dbc7f310f4c9074b31. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R1740745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a5122fb71b46c51c35ec426796f53fc2272e8fda73bdc73439c8c4c6ed93c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR59R1740746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d62c8f703bbcea18e85b72151b65db8b6d1dadb8946d2970bfa5aac2c8f17c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR59R1740747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f38298256a1a1d4522c03e6f09856d7251f0bbc918eb8aa609dfe0b48623392. 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/FR59R1740748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92a4a877473662d4274ca713be87431b54dafb22457217def7e1f201c502126. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FR59R1740749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe296d3927a53125541dd484802f98217eb7f274faab746faa5608dab23c56b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITG271900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3288cdbda85f23465d4b71fad34b0892e29e89a9feb63bfb1bea4143291af5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITG271900677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c6b7bdd4a9157c52bf6d57fa3a2b2c628ba728af4634cfa3de009c9b895bd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITG271900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcdaa3e8c95883e9298c5d9e417b45df715e7085cec63ebd152fd1b3b7413f4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:33Z), 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/ITG271900684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bc12aae61a3cd341bcfeed640f6c3d26fa1aa060e30e0905046edc27012b97. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITG271900685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff681f55d97a87cb5cb3c1b3c085bb0736d5e4aa657f155213b7ed4b155aff21. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:45Z), 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/ITG271900686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65386f4af82a166e352f63ac0510dc335fd3747d685ae08c7f5fb2c5ad539151. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITG271900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c88d1cb24e03cc1522a011a47ad18144abed61cfede7aeb113594b9f57561. 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/ITG272100739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dee812c4d9ccd68a77cb576317783a1598d4234714530d74941d40b7d9040f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITG272100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac16f3dc6e398e36230a9ef79e985fd1add1af7b631e960e01ef946c47564c4. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:35Z), 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/ITG272100735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2410ec809c3e27ce6834429e45ee65aa74bedc280305fc1ead45f399fee2e95e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITG272100736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8f60845b4c274086b7962d1cfd6078f7bf2e74c03e5de3dbd4355999ae8da4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ITG272100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9871abd30fb6d9d0741a6b85533dcf30bdb59fa411c9c1f57873e1fc96a757de. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITG272100741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf2d18050a6da89692c68354843ca4f510b75f6e70d21b9d58e093123dc59b6. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:03Z), 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/ITG272100742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ddc3bf916068a92b217e4b2682864d738a314a8e9e53cd565dc6c4d723d616. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:11Z), 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/ITG272100743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5acec409b8caa5d5e864f1cb0119e5936bb9e1046eed29ac8d11b9c7af4778. 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/ITG272100744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c462d6cd49668b9d9ca2ab0808016eaafa912fe384fe6544ecb1b7fa7ad950. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:09Z), 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/ITG272100745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3bbaca6c87f3a867405f7850fe199382f99d354370ffdb3056e046c4176ac. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITG272400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb602ce15174e08c6357f4d67e91d3547d96a29a17cfc5723057bccfa963b4a9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:16Z), 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/ITG272400635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7a4787ae16c54badd7c7b31b0ebb9b1de4d5e9b54e3f4644790d218f93416. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/ITG272400632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088309624e9b1a0186cf7fd27166a1a5b1692f27123dc09c26bbfacff62b978. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/ITG272400633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e632679480a489b112480a54653a08f2453f6d5a6bbe2bab64f6e4cbda3da1. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/ITG272400634.