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 0xcd2c5160987d43ed91863e8931fead33ff6c2664c1ed8da7cb71fab9171db2ec. 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/093034eb-a970-4cbb-b7fd-04c3f13937e8.json and https://artists.proofprofile.net/proofs/artist/093034eb-a970-4cbb-b7fd-04c3f13937e8.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 0x40f51ce058244115cb1f59fb04b61ed3228b5f356692235f910515b98ead7fea. 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/UKR6V2031530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73570500de0180b330dc4c52ab2b900626e4a14cdb754ce5705afc9bb5293d0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US83Z2111822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd204729eb84d1fc0b1172a7c533041ce8e862128cf36d4890000bb74589d7e4b. 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/US83Z2111823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa491e77b994427f2a42f90a91264d0cb2be183fe126d4b30b4942c97cd9cce6. 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/US83Z2135732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc3cd1016645834d70fd4ef15ccac11ea4ff2a5195151465431cc55b7c89022. 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/UKR6V2280175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7606c04ac14420ea30f08669634b7ed355361ea680397bbcf87e62313cfdaf2. 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/US83Z2302119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3024e6b97dfc5fd508305d0ec02f111aa1a777efce2a81ffdb140f2eb565c6ab. 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/BXBK62400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb347677a3963a064d475b570563eb99485df0bd7a7a4c7e497228ae2f45be. 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/US83Z2488861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb347677a3963a064d475b570563eb99485df0bd7a7a4c7e497228ae2f45be. 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/US83Z2488861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff1e81f29974ac8df0c6730910fd0836f14e18f768ead0fdb0371115577e7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2419512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32313ea2911d4fdafce7f0e2e21f5a1b6e6711a35a3a954a08256a49c7a18a08. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLHR22500215.
Forever - Q.U.A.K.E Extended Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58629c54c23f670835f16aa5e21397a09a47172e445cb06ac86cb721357e4ab. 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/US83Z2210357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea35244ea108d9f4deeecd8bc469b02b65015b06a4d768ea358735a5e833bc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2210355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1811aad450931f8f29976f2fa66fe68874c9fca032d42463cfade2a41bf98e82. 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/US83Z2129587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac32a7c5274573ec590a771a25054c03ac08826f73e0c393a23ad14538eba1c. 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/US83Z2130127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b31cc1507de8a09526db419b69e0a4976218a2603cf5678b776884d7b7f31af. 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/US83Z2208591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0ccb08805a3cc3a59295af20a1eb9942254c8bbdc68fda74cca70d3784b8b4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z2459640.