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 0xb512aa7eb0b0a8bfffa1a4ceb5f211741a0a907e0e41128222436be49d29c998. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/151af363-d991-42cd-b5ca-5d03cc19c791.json and https://artists.proofprofile.net/proofs/artist/151af363-d991-42cd-b5ca-5d03cc19c791.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 0xad0cf99d6ed6f2f9a40b151888703e2c24a5cc09a3d0bcb9a3570f137a82a700. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZH4Q2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eaf2110c2a84a23ae33456b9a7d2ac3a332cb3de873c2dc0d61cdc28f52ab0. 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/QZH4Q2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d785f0e666962cd7ea8a42bb7df99998f6bbfc04602efa5832c41dcf05ba08. 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/QZH4Q2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6034a0c249bfddb32640a88c89cd082ab7adceede811e841fc56f244e524ac4. 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/QZH4Q2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d34925e6d3b187adbc68c8224eb1380cfe4668132633bab46f3860bf4911c. 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/QZH4Q2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578ddb808d8c91f825270d7d61ab3f48386afc3d75f7324bf9f98e1c2e534023. 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/QZH4Q1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfca9838af6127df66f3ecc56c388590d31ede3935f1a5a0dfe2a570a2696e15. 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/QZH4Q1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df6fd3188a9802e1252ff659e12735fc99e028592b726f240829d97f1d2d756. 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/QZH4Q1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0317bd9626b557c20d38736c7185bd42ac80ef005c17ab83d83cfd3bce54bc19. 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/QZH4Q1900008.