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 0xe2856bbb09a5c3a908c76ee302c744b9ade4254d7f62d8ec96edae5676e7910a. 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/9d5bb2f8-b4e8-4430-bb9d-5dd3b60f25f8.json and https://artists.proofprofile.net/proofs/artist/9d5bb2f8-b4e8-4430-bb9d-5dd3b60f25f8.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 0x1e67cb93dfbd0dab3c1a5858ba9a9a4a0ea322980bf02ee8d5d01274c945d609. 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/TCADU1806252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4769d66f0ff80f83ec532fbcffb6524254bf82494e50050f4b1cf455c63d7a5f. 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/UKGV81900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83896ef2f8aac36dc23c346b39ccb4b0466120ea41d8570a6338c78a5264fba3. 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/UKGV81900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb644ea3fac399179956907a3baf511038be7dc4fab6969ed6b968ab98f8e895a. 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/UKGV81900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5566c2def93cdda52dc6beba706b46e1e861633790b149aa0ec6d9babd218648. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKGV81900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce54862761e8645eec93ea5be60660c16a53e538f0723bd474552106c276b7e9. 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/UKGV81900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87b3825db66d9bdddbad29c1e302005c60701d163a56359f1aef74443602f0d. 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/UKGV81900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb607e491b031a05c2f59ba6df38a4d9f899c5075f1cc543e240c60b5c69d638. 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/UKGV81900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27be045c22eb3028e774dfb26d472f77a849b540d7a5bf224b4e34cf9c40a6f0. 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/TCACI1545423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d37fd88e5757d3ae74bac3d92a71a3129379d6952b9903e513e94cd536dff8. 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/TCACI1545425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d51bde71de8f86dbd08598cd430fed650277cdaa23b13a891bd122bf384dc8. 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/TCACI1545426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5791acadadbd0962e89165a2b50cd39061c9f52ebc6c902d4c37dc54a2069f37. 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/TCACI1545432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0283d752863e35c898903cfaf15b7c80c3c8fa17f24f0caa905dfbce35a5d87d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SGW502382810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8d7e6262967154413e4154704a24fe4d236ca8867c217d5f15c9a39f1b116. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SGB502255456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf666dca2160c26ed9561b5752cf2b0ccda32c96e14da1f702e0cec8dda086244. 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/SGB502269028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8d7e6262967154413e4154704a24fe4d236ca8867c217d5f15c9a39f1b116. 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/SGB502255456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf666dca2160c26ed9561b5752cf2b0ccda32c96e14da1f702e0cec8dda086244. 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/SGB502269028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06fb05cfdead0ad498511fb6638f6446ddab267a8f6648008dd629b90e6d07d. 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/UKGV82100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f37ed5b6cb0ecd101b3d1260b848386ee2e03bd596f9fe648098988d9505a1. 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/UKGV82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f37ed5b6cb0ecd101b3d1260b848386ee2e03bd596f9fe648098988d9505a1. 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/UKGV82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b10d45ac64b211ad99e6c6329fb52619aa370e7ee6ff6c07da52c47a87578. 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/UKGV82000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae1a7113be748d9ec2e69472f653ebb1864e04447aff6f5118d69d1df66b85. 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/UKGV81900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea4ebdac736489914dccf4c554626f60c67ed194b7002c13b40d80fce4a8fa. 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/UKGV82000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae1a7113be748d9ec2e69472f653ebb1864e04447aff6f5118d69d1df66b85. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKGV81900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83896ef2f8aac36dc23c346b39ccb4b0466120ea41d8570a6338c78a5264fba3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKGV81900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e67cb93dfbd0dab3c1a5858ba9a9a4a0ea322980bf02ee8d5d01274c945d609. 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/TCADU1806252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff67b460872d170096be98839a9fafbf7e033174ff12a558999e141dc28a4eb. 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/TCACT1638195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1aa9db22d89d2e92408c8741d6a463d10bd38d6c6c7c5bd60edeedfe17f20c. 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/TCACT1638197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d9fc05184035e979a823ecd4c3dec1bdd164f8c7a920623135a3a23a17963. 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/TCACT1638207.