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 0x7130ec714de9f13c94f9e64a0fe5196c75a9b33822aae48087afb1054aacc0a2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df9fb775-cbab-4c8b-b045-52a565e298e4.json and https://artists.proofprofile.net/proofs/artist/df9fb775-cbab-4c8b-b045-52a565e298e4.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 0xc35326c510821c69c65b7fd9480dd76f51f69c3a2df06cebc4255243724deed9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:02:31Z), 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/BXLC32000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95f6a1b4635854eb336618e1685b83a6ce9505fb8007f62ccd868554c38df4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:08:46Z), 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/BXLC32000374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cf53dab8bbfa0b5292e4ef875cf5b7205ca3e2a0f6ec37b7aae7bebe4bba8d. 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/BXLC32000382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff16c6b9bfa3d8c92416a115142138808012c332c7710fd556d818aa4c8dbf3. 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/BXLC32000385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32913f1c0f51f863763e414155c3bedd59ad0e0f9d04b08de06e18bf95fe2448. 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/BXLC32000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143649bccc91fe89c0bfac29509e39da1232c32bae280221e61964d3d240fa17. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:07Z), 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/BXLC32000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a37e4f340d721d797121af4d7c22555f18b51d39499bdb1837aa160ecb6d4a8. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BXLC32000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caaad738d65d17a85bcfda5192b40011f25031a7c300792a71aca2e2de17bd1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BXLC32000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc105c92a4f2e3ef1074b125ca4192a6a78c0648f1cd711e5ce0513e5cd21e43. 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/BXLC32000295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22258d0731eb0d711a8429e992e0da11d37d1aa6e1ab9325560ec6bf71f0b73f. 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/BXLC32000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8b97d5e89b6c07415d3430da55a7fd01b4938af7a658b3041c53f7aa805cb9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BXLC32000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979942e37763a1d7e68ada6daf2e048d585b40cc1842e6933cff180121e446dc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BR0H02100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb77f49dc3ec7598f9c194ba7a2df66664f79f0d212c2384173103e6bfae9d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BR0H02200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bc8737f7257827435a77624d7177a7df10a4e6e8ea2ac0c52f85c1739e21cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BR0H02400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c905622f106758bf20ee081851d5bf8dd3503ca19b9bf8504257d34bd6fceec. 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/BR0H02400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aed3f5ff9c20470a7e5cbfd6ae4d424cdffe6a9e08e0e47b0ddc80fd9d5b75. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BR0H02400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4043485135aa5e047495655c5554f4fbc00007c245d6df44cb61be3ba9525ec. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:15Z), 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/BR0H02500001.