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 0x598b8d9dda6d75b270256bd8870a73931e713d4f1d294270c1e05c017fbdc71d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6325d987-ffff-485e-9e58-9b04757682ed.json and https://artists.proofprofile.net/proofs/artist/6325d987-ffff-485e-9e58-9b04757682ed.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 0x93e42078e4fd780a226bd9b6370611fe8d0dd9f0ccad8290437fbfcce58f3a1a. 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/QM4TW1956585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cecf37a9716bcd1681d9403148576724fed0890b5ade7cc0cc3d9faede1b039. 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/DKFD52381029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad8b61a32d05ce1d656945b59ca57ec20bd14efe3e01b270a345f6f5976cf3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKFD52381041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f378de2c10f607b9b2a17ac148a5af1ff69e8911dc48c9e4bb90aeb4019f8c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKFD52381046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325335b53503fe3d059f60f3da00836f823d194270e3b30a90bf44c8882ddb18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKFD52381049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534092b6509d3f9ed8be8af4df848253cd1afa8eaebee9722d86244b408859f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKFD52381053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696c3f5367d09311eb53943f01600449c7c2b4dd2212f821defa7fb367ce1f8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKFD52381059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b0f483069362b3f7cc29da0d5a87c2f50560297b7999ddec4da1f3794c531. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKFD52381026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fedfc017c88f2394adaa06c3cf724f0e5aac6c6cb06a4d70309c3d02ff0bfc7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKFD52381002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe347f9685d6cf86427ef2ec2a147dda819140c222bf5bcf293d90c7da4b8858e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKML20103181.