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 0x6bb3d36090d8e51b1af835d57b66ccc90761730bfd0c623000dfc749b1037026. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcab5741-08e5-4456-af1b-8c5bb4a57e76.json and https://artists.proofprofile.net/proofs/artist/dcab5741-08e5-4456-af1b-8c5bb4a57e76.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 0x64c0942748c8afbea08dfcb523bffa404d1b1a4f9d96117a26e38b885826740c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHU2438542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d2dca907f73c7226afd822a8d435f055faf2588f37f68615ffa4a9976535f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHU2438764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07dd40839eab12898186a802959a78b60c2dd299ea6e27a792b9eeab355d988. 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/TCAHU2438801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c96575d289745e6f614225ced9060fa2082bede7bdc827ed6e0861fc9e420d. 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/TCAHU2438805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7956f3dee274eda0f5addc963d3214416f445cac1a36d6b2871a15649860df. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAHU2438816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4a4db4d87140163caa8ce9cc13594a4e79f323d9210ec9a8073b5b6eeb6438. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAIA2494743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90df9db2def7c247c22a42f81cf46700beebf96020312e5c8e3ef130c7bcd4d. 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/TCAIA2494748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c6cd44a2477225d297039dc1c193912936c77153d4029baec570fc608e674. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIA2494754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366fb118072b4be0bdc00e208a82908e08c6dc30f3b425f5b9d4b27abd62baa7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIA2494760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501dfa1c8192d249971cc2bc91a237d2ab220d85702ce81d6939a7c681284f90. 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/TCAIA2494789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0196c395ca8c66d1ab2aa2e218391df08a700b68ee2a4c697f6f4d30de1cbdeb. 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/TCAIA2494806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ad07e6ef458f0ba466a2cd876cd1b366bbd4fdabec360861390b5309d7a9c0. 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/TCAIA2494811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac67a60176c42fbec2c1496584ab3ba7229bf79ce3b25f43925169f35b7c3cd4. 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/TCAIA2494821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590456331e57510700e599777281a11f53ccd24fc116b0439aaf3f8eb19eac10. 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/TCAIA2494875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33d311749b3ecc140155e29fcd4c8dae0abd5229f8cdb859b4b5d1df3ba36a5. 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/TCAIA2494880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9951565c373a91f18090154dcfed520e6bdbc6057e8d9f189038878638f44153. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAIA2494886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e71d801cb2c86a97e527a1c54eb4455267532e745ad70f053e049480e73e48. 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/TCAIA2494891.