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 0x2f9441b70a125fbdf1b1d139f2c98d858814bae5b87e46e8b77571bc0f1b7c07. 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/13bb055a-9374-4c8e-a4ab-59258c07625e.json and https://artists.proofprofile.net/proofs/artist/13bb055a-9374-4c8e-a4ab-59258c07625e.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 0x71610fbb0fa434c0559775021eb2ec67da4fd97c9fea57cad4183e07d66126b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6DC1575312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd3378c5bfffda05db9069ef6604ad5adf308f06f3b5abe728de817a957a6a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6DC1575322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895b3342363ce9220ac19fc44e710a5a497b307826cbf6f45a10c87427c4e31. 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/QM6DC1569457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd72c6e99ac9b0097b7ffebe417e25e74d98b21a6907ee2ef7a450bc5743928b. 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/QM6DC1569458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b848347e32534cb3a5540d59b65a1b030836a273652bacd093f5eaa7f11ec4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6DC1569459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295221dfd8f7a1dd4d98b714bd3f013752281df5b2ca795e89266d4717049065. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM6DC1569460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b19a9ebdb12be3e66731460666c7d7b7c20b6f42b2af6556d74eebeadca1270. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM6DC1569461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98c49ef30c2d7402d7ffd23744d30cbdae1a8c36b3cfda16fcb7db31103b620. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QM6DC1569462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a1eed6ac3c356089bac0f99bedba7134248e2365bb5d82aba8cd3260caa9bb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:19Z), 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/QM6DC1569464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71610fbb0fa434c0559775021eb2ec67da4fd97c9fea57cad4183e07d66126b2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM6DC1575312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd3378c5bfffda05db9069ef6604ad5adf308f06f3b5abe728de817a957a6a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM6DC1575322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9dbec287c94e4de9a43796f2b9037e1d51f5cbd3cc9997c80c4c15d45148bc. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM6DC1575325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895b3342363ce9220ac19fc44e710a5a497b307826cbf6f45a10c87427c4e31. 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/QM6DC1569457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b19a9ebdb12be3e66731460666c7d7b7c20b6f42b2af6556d74eebeadca1270. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1569461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a1eed6ac3c356089bac0f99bedba7134248e2365bb5d82aba8cd3260caa9bb. 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/QM6DC1569464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22218d167c88083c36ebd196ef566518ef3eb022114b1d89a8a074f1095bec3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QM6DC1574727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c484bca16df0c865f67a32ad5c884456e46d700fc16dce8492d9f83a2be7f. 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/QM6DC1574736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d9d4ef25f44cb12542e71610c4f8fd11b1056a998eb36468d622acb60f16e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1574744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6942cab642f2f3a6605d1855574fa358ce662ee13f7565182646b7444c1f3a61. 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/QM6DC1574745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc65995cb3c3051fb2247fd6ebf86ca1486331ab43de0d4981a28a8b31a15ee. 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/QZW9L2292733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c94b06aaa7a6c8ed36e3d9186646f604f412b384b939fcd8c79deb0b5c31e9. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZW9L2292734.