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 0x41884b04ce1efe70bc25d74e5adbed4f187931cac71dc7bbfea575b4cd85f798. 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/ac087278-8cbb-49a3-af4b-84d81530cdcb.json and https://artists.proofprofile.net/proofs/artist/ac087278-8cbb-49a3-af4b-84d81530cdcb.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 0x41b142c2c73e6de3e7669100c4fd32d8031aaf9e8af51e61dbf87ef74997957b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMTTH1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e429e08677b15d1fc1bc6255e9bbbf5b77b37ccaf2be164083e8d16c3cdcd. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:06Z), 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/QMTTH1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86fc57511a86c5fa07ed0307c94eaf2b565b342e84e37d34542a412e8b92ba. 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/QMTTH1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fdb418007bc99e37a7e32f1328363c0bacb923135e1a4261273b9720a4aef2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMTTH1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151752bd6c8f2b1342b96b0c69bb736a079cc5b4adcce6abb13f11fffd265e67. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/DETP61700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ef50b2f384705d2d186452199c8ec6851b15bce5d548f4cebc9d23161f971a. 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/DETP61700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0019aaab015dafa618091c8dbce137d9ec7ddf6206ac2e754a0bd17cae487e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DETP61700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4849c688c331996df5c74de853d51ed529a42cf7f94f122d07ca612915edad8. 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/DETP61700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edd56fb9839927e3118920b3aa14dc2813d665f0b6e593e812cb72b70380e3c. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/DETP62000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5470fb2200742ef5ad0ee7e46f61256759745276b737361c09c9e426e1e0c7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:47Z), 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/DETP62000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac57eeed69bad58b349fdcf20e0af1c2de9daf2184ec75dccc9c0124c2db33c2. 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/DETP62000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01088d062291abdfc9aaa78808162f08977449351ced874dd5cfa92fda5152e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DETP62000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed091e122361225a58bf4ef9dc94e43eca6d278cf43ec4728dd1b134c596f19. 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/DETP62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9838022ca9bac2de79cfa783515a048001eeffb3b1cf2c315fd7af91d8b3d16. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:13Z), 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/QZES52300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd846d9a9104a8fa8d961e2c0fe047b3488e3be0dd792a7861cff1f2eaf14cfb. 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/QZES92338889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58231920955f861778d024a8f6e143f758c240edf0e5d741ba66dc96726e22e. 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/QZHN52358702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a416e00e271958d47d0910128eadcbaf001a2792766e1dfc25a065b1067641e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZWFS2306572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8586fe23a2d21fd1df721fe3eeb0502c73fc66ef626c0f2f82a59378c548d8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDA52495334.