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 0xef5c64a9de029f4f63888ebeb6a0e9ccd3274d6b91e32c9e7ee83b2ffc88adb4. 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/77aa5b10-72ae-483c-8a1c-1baedc6ae052.json and https://artists.proofprofile.net/proofs/artist/77aa5b10-72ae-483c-8a1c-1baedc6ae052.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 0x9946c827ec5ae1b2a591d57ed0eb708d123c94996d2f15722118b0e2195cacf9. 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/DEZO22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016bb0be2539f791d7516464c6cd85ef85d3376cfcddbed0c4f8c8b9dd5900f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZO22400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f16da189c62238d8b65b9814cc2a4e4f991209f17c54f53f24178b75cbd68. 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/DEZO22400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc39ff4914f4028e3ae0d2bdf5b90e9b93bad9590a573c0fb917de476f73e1f. 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/DEZO22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0d456f555b1bef2035795a93fde9e59fc050187e66f5fc720980309eac2ba. 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/DEZO22400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d197f567f79f88af288bbe3d183b8e16c119eed33385475f96e3f73f6bd2a30. 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/DEZO22400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a01585a05e06b62a48ab674fd4417ab51c26c3f580a5f12d860c63ab68c9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZO22400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c565ef975934fbc6613429a30a19e7adbc4c80c5654de7f2a1fb36e7da910e0. 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/DEZO22400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc63627ec7c36eeb6f98f994af382d2150ec25a6c3f24e7ae0fcdf7df85c996. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZO22400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cee21542f11ec8d3c1be60e3d961276288c3f3bfaeb2ec15ee830e27ef0d23. 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/DEZO22400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04fb693c453083b3c961e688244ee8a39eb3b9e648b2d836d3d073732342a92. 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/DEZO22400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3810ed72cb09c469a8f13dc6ac9a5799ea0d1aab7f39914fb30984ef99e2c. 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/DEZO22400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c44ca7dab00c19a880e6111c5a6ecd46f3bf2511d1baaf75d6d7ff95e0c5a. 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/DEUM71304756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436b1391214539d1e39f380dba32ec534cbcbfedf2236849b2e029e5de1fed43. 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/DETR41700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc39ff4914f4028e3ae0d2bdf5b90e9b93bad9590a573c0fb917de476f73e1f. 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/DEZO22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3edcfc681b670833e1e5fcc72b8976dc1bca17e1985aa2f3ebb84c175ed14d. 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/DETR41900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9946c827ec5ae1b2a591d57ed0eb708d123c94996d2f15722118b0e2195cacf9. 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/DEZO22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ed703cc62e06aab303db62d257dbfd0f6ce26e554d9dc6a05e771d1bf751b. 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/DELV42000568.