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 0x4c29db1ee2425ca2bd7b7fbda9a7ac346216a78de89332bbc29db7428a2b1e2c. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6441c5b2-ff10-4f2f-86da-d12400238da9.json and https://artists.proofprofile.net/proofs/artist/6441c5b2-ff10-4f2f-86da-d12400238da9.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 0x052f4260ee5633c209c271c90c04d1b38e51224229fd127cacda2955630594cd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GXBDT2438743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a61966e9a0712acd8fca92859b62c4850276c6eac91a78cf275d140c475bb4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:14Z), 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/GXBDT2450979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed54337824e0fe72b664ff9103fd4a539c9ec4b39949cee3ab153c897afa12. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXBDT2462045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d00eb99d72f4ce11749e8d5c291abe5d4cd5adf21989c7fa0d7e94ad75bb7e. 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/GXBDT2463502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c334ed838efba90131d515c446d6c40a6fc0cd16c34e5948dd9cc7d59980ba. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GXBDT2487276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10534da05387cfab1386e7853572cc0d47e2dd07b3c71bd525fc1bad4be4de13. 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/GXBDT2406364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6773c0c8f40b16f2812584292bdb37ac13f8db4cffc6e5ec08cbc15c2975b5ab. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GXBDT2433832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0eeab907c729afc7edc69f79d8d018c7c1fe4da0112df8efc4f713d8b992d. 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/GXF972497387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787ac6724a3f44d4720cda556461bd34f170ff13c97ba9cd15cb66f69f3c31bb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GXF972457632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264297fccc4b845472a1cdfbc51fc84632313f8fd5439d8907bb92f4b2054d6a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GXF972410797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4fc56edd8d5a4b621ad4a443d36fd6342169d2d2d2e9fe0592db32f4e8623. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GXF972443505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6778100035cdfcab8e2c4b092d42e4d0ea7b10e35650fce393aa34756dfce. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GXF972438768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce204b146e66fffe70bda320f56b413daa2c5c3b53d7ee1bfd478a63ecae1ff4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:50Z), 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/GX8KD2540790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7c68f279edbb112cc49aad5fe0c5cafeeccf59e1445a4bff4634054a58e2b6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX8KD2545548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e3ab6f68629555c05b0bbfd10c339fdd2f782d7c29c9090b3643b8262aaa08. 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/GX8KD2520959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d83357c446ce542e2d366fd481044d465305f0841eb635b203b8a1d0b51de92. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GX8KD2590841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6af5868a6400c063145d1591fd8ccae3cbabe7e5cd291823c52d9298732b8b. 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/GX8KD2576869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6f85715430d05d74241a801ae3f2902d9b61ddfd8ce82a543d69837b79a190. 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/GX8KD2560631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947c6481f785896e408562dc49e432d93ea63097f66e24c69cfe04cdd8ea0ad. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GX8KD2501469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593227215fcd9e9695316d5a4875d02c9b38fd9e714ab474fb95b0fd3dcce4bf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:29Z), 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/GX8KD2527740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfc7778fe4651d2f5cdac8c39549019c0a1e53e89de86f09a1e88294249aa61. 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/GX8KD2544226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce318173fbfa329cf4f9f149fc07bc2eb133b90869a61a3c8b78766e657db308. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:38Z), 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/GX8KD2520389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733108ccb40a682b59bada9ad6eb4a42b039cb0f12a5c1ad8a54e7c2d490c16f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX8KD2501390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc39d9a36f73cc7238d3e60ad3a16ed25cf64776b87c9818c811d104eb5cbe21. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:16Z), 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/GX8KD2525891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee8a79c99569e88a2e7121350546411fc39cee15991f025873593f907f4d6e6. 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/GX8KD2519780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80672097fba7c8b2458e6ec4a55db2f3bd01f2debad5ca49fb581a9bb5c003c3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8KD2565089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e3cbac4a5c03a48250af52a94ceff4eb132fc8322912596340fcdd58a8619. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:49:35Z), 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/GX8KD2546632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf20f6ac1d3d5a19a7056091c300270f99e8e80a27cde7686523f3f65b6f152. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX8KD2547700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c6e967530a01ac4267f465783ccd63237dd0028b44a2f289e1466a926dbf8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX8KD2558835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40f3969411906e692a23e6ea4850d07f41319b12abe0e2abc0e298aa9b5273c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:45Z), 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/GX8KD2529387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816044e3c252e775a88287e4d0448bdc0f743445421ccb655267a29c1848a265. 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/GX8KD2517678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742836a3847efe38c303042a973dcd5bc1299a20cc2c1c5d3556e894d28dfc6f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8KD2518149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf3f10a116760860353e78213f2fe8f82e2b20071502e845dbb49b234de8baf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:40Z), 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/GX8KD2575042.