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 0x613e850fcd8a2df480279a6db84cec8a2e2e09ac0982add95f8e6e89c4f1182e. 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/e6619e11-b92d-46bd-883a-707c8c41c26a.json and https://artists.proofprofile.net/proofs/artist/e6619e11-b92d-46bd-883a-707c8c41c26a.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 0x098886d46794fb3c13332f8f77db4c24e5d814995e8af484250269557cc55784. 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/GBSMU2131667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9f011da435c5f0af3f679ce465564c5608a8522bf84c7dfac0f0aeb00c7d15. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:45:33Z), 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/GBSMU2682833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfa1d48280b68134cba2bf160662954ebdc5d9e9f3d63e081bc00b04cdcae9a. 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/GBSMU3936522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f27c44966b937e1608755c0ca02767a8bdcdae61a53ece5bff4fc4694e666f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW1955444.
Can't Get You out of My Head - Kylie Minogue Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7668002b98bfe42e8afe4896edcfe85d5828c33c535f003c711f48e318c507. 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/QM4TX2053489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511525351ff075caf323202e9932f0035beaca6d139e8f9bcb86a733cc47f94e. 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/DEWW42100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f675cc47ddd03293f3f4ba8f628d190b206658b4ec35c1c395da3227d491ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:49:14Z), 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/DK4YA2187001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b19520602f4093f40e37008796ba5faeebcb0024d864b7bc6e165b2f8852d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GX89G2231861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684402d8827310a1ab02e7463051421dfc22bfaef0dc237982e16b5458e6336f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:05:16Z), 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/GX89G2231834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd1e62a2c483959635e3d45eec83a173cf819631ef3ddcfd4bb83e7eed91ba2. 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/GBWUL2381091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b55e8efc626b78259ecf7025db29d071c4ec44ac6cb084f442601063bcef52. 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/GBWUL2381096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de1f8399fcffca7f432bd239effb8f29068d121f5458cf7a02d5736af2b565f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2454838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecab566185b3839ed2a790452a55982c3fc06ad9341661dbbf3e32044bff3a4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:25Z), 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/GBWUL2380732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd02479ca6faddfde03510619e9d3539b20dcd227c18c5267f593175ae70576. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBWUL2381055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1e4f7f881fef2445ddcdde5be52ba5688339afd186894f8dcd7fc2833279c9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBWUL2381028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81491ef9d9afcf94cf58691dd0136cc5338f23c9655a2ee90b17225606d364df. 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/QM6MZ2484493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1daf39723e7c5653f0a3497316ceb8a0eb9c3c28ac037c0990c1dcfc87a9f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZYFZ2430145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79348cf7aa4d6c5cb8e790ffcac323e7ff3c4fd70f67fb50269a8caa9c947e8c. 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/QZYFZ2430146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00896f9fce3b0e6c331c7ab734b8f1633297b2ffec01db7309dd1973737c0be8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:17:39Z), 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/GBSMU4407486.