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 0xea90c411bea8fc7185979af4adadfa85cfad197497ad68460e876bdf750df96e. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20e2773a-7467-4985-8db2-246a3a57d559.json and https://artists.proofprofile.net/proofs/artist/20e2773a-7467-4985-8db2-246a3a57d559.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 0xbdaa0e4bac3e041c236edc4019e87934d059af26f5e93b435db2101925ff1609. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZHN32569448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665db7d033e18127e7a7541f8da0aee479f7f388dd766634b8610d120bfb6a83. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6P2523461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e94e77b4620215b579a396f298c1c8e9e2e72f16c11449674dc16c5b5f00fd. 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/QZK6P2540713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2efa7e91fa6799e17c8acd38efe6d0c55e573b6dc05ec3b2b5864e5e01fc51e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:35Z), 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/QZMER2588274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06368644c21de84c04f7c70f8611d7c7cfb5a71ab3594bd5297bd51b520aa2fa. 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/QZMER2588275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb8685848baffa786881da517674026fc92380d94295e2f84724be59f8f8ab0. 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/QZK6F2576675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c5cdcb658514b5ce9f93e120ebda8304eb8df102acb6839059c1aad701442e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMER2588276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9091290e9b207fd494e1c47c103b49f90e2a8e8f964d6f43b5c96e21e4a033f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMER2588278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33a085b17af6a1952fb5f8076b4997a0edb56ba88c1fb82e46804e7d781fd6a. 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/QZMER2550115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd9f343621546a648512c0a8f12e06be9ea983842403acee5e7c7fa15400e9. 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/QZMER2588279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4569c5b649b6f4e153ec85712dc0ba525ab644c24bf380bd7867befb7ace0d4. 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/QZMER2588280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915f6d58914243ee2ae6bd2a721b69478e35221366c7e79d792847775f1ffe82. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWS2533700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd61142e4b2c522c333c52761d3783c3138f7cd820dffd6b5b19888c52d8ea. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZK6P2540716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf303ca30aeef7eade57dfba5090c5f19b5b55378e9aa19295de73f84fc97c959. 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/QZFZ42585401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0822f75d00b674fe238fea4f4edd782d37f95729e64f4826be067b3505bfc9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA62554140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b0c402cf1f0563666e5b7d3bf0d408b8a59cfef4fbf6f196e6a63ddfad9029. 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/QZZ7K2597158.