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 0x04597f6cd9cf40fd8ee309a29248428b22074956a7be54c80f261f3687698627. 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/41695675-5c0e-4c61-83f9-ab0289071fe0.json and https://artists.proofprofile.net/proofs/artist/41695675-5c0e-4c61-83f9-ab0289071fe0.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 0x39dbd4fbe05ecc0224c3e513131fb97d7076f5afaa3aa193ad5450bb6c237f3b. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/US8U81600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59f357a2d6a6e549eedc3965f81b445e8df720a5179ae93999a5ed0bd57da23. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:23Z), 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/US8U81600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eb8ec341b29575bb427042680fc99ab34c90d5c544aa5aea9951e0c4876974. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US8U81700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee206bed06491b0491883b623883e989633940a5b4725a21a5a293f8beb796c. 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/US8U81700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda07abadb919e9a268ab5625d05f1964a427564f6712591fc9f2ca30529bd4f0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US8U81700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04173eb09c4964681060b0a3de7cd55ae2ea8d5a301f821b4b62ec150a0ca30. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:29Z), 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/US8U81700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb005a4bb2c9f2f96c62d90514ee0e30824ff20d5de901e65f20b94c77a2b9882. 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/US8U81700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f08dbbf31b662798c423fae952fe9993a5851ac92e598df572cc2ed7f78f7f. 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/US8U81700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e112359cd3cb8481ad9d2a242e6564a8e57e905829c9b7160654e638f2e8258. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/US8U81700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeac091ff9ffac76de0935618784926b6b477b5a21ba6edbdb2ed81294ac850. 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/US8U81700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ce4382c6474ebd3d4491d21e5ee3dd71260a0f6b3308bf4ef74f7b561b3f37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US8U81700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48a1714c70ecc9f82279bd9ffc7385c87280c859b9ddb141b6254548f723a57. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:14:19Z), 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/US8U81700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea11aa3962ff4edd91cefd9b9024879aae5c5a3e1f7eac94bc87a7a5b5792f87. 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/US8U81700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c788dd38d1197ae82b91c8fdcfa58f91400a22c81fa106ed27863100f4668f9. 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/US8U81700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2add3c28b2bea428e57501dba47dda27a01e626f4e3d48f550c39819a1eb4b. 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/US8U81700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3622dc21ed91a249ae2f17487436c17576f9d2d56761acef36536cca80110582. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US8U81700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9643116882493dde57df6eb018f6727e7ebfb225fc73d40c2c6fba7190a1ad0. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:01Z), 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/US8U81700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997690c903135c044523f293aba578483fbf11e83fc93f89e6c8f4c28ed6abc6. 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/US8U81700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35982d5990785558bf6eabb58e8ce04f52895658ea95c47c9e7d58d71a5e3b50. 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/US8U81700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87681e53d437f018aa0ab8da20b11fde151b2cb2c07714dda8a210199a1993a7. 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/US8U81700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3865dd3ac0bc0b0e4ebae5c24352b342d68103a6f0afdb384ad343ea24a218bb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US8U81700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07b5b60e04bfe69e49a818237245fbe013ffa588e51aa017a657fb6b203a01. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:52:00Z), 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/US8U81700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e3308948e89aad5a92f0c0c7061726f0c51b2f782be0ae90a0e0fbf3f31711. 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/US8U81700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a06317c2e480518b4142fa8cf75c3200a197d666c1bca48aeafbb852dcc0e6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US8U81700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3cd700495e991201108f97181dbd7305f3c0b71c155cc21ec9385a373b9dc7. 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/US8U81700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f2caf279d44fb013813ecdbd1c2bbefbb458f63e8018322e0ce441b6aca468. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:53Z), 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/US8U81700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe16859a350abb2aa4f221fca401b36fedda5268c699a298d834b3b549ee720d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US8U81700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc45bdc666ae15408e6edb5defac5d77e9fff3b35e9b77e03642654e843bacd. 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/TCAGZ2307220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646e566e9b6bd083d78da8f86d3cf4bf6c7501c3ec1334fafc3c525e082d50e0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHG2343136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3239dcefd48a877f2a4c99849435b1d77e139b9c1b5982d3f6359fe9f6562. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAHG2343148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aa785dd77dec2172fcd1bd1995a940a9a3cf0c50af13fd9df8cdae5faf6c38. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAHG2343171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3438ca4bcb66181341417bc9f4ecae74c3a2be484ce63c3a6f888a223175295. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIF2431410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda07abadb919e9a268ab5625d05f1964a427564f6712591fc9f2ca30529bd4f0. 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/US8U81700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eb8ec341b29575bb427042680fc99ab34c90d5c544aa5aea9951e0c4876974. 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/US8U81700038.