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 0x45d33ec422c7c6842017eb14a18926fae657783d3833e42be6cd8d77060a2355. 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/80582e14-e683-4988-b004-8b42909e2a31.json and https://artists.proofprofile.net/proofs/artist/80582e14-e683-4988-b004-8b42909e2a31.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 0x9e4078874d470ac090b4d83bfcd2f45c046b6f15cf76c9ec1dcd6f393b226410. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:19Z), 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/BCO3K2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f4d7c17e21801d3089674ddb7f11e203b0f5ab3d0f745a233ae74feafbd050. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCO3K2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c90dd07db35020c8771688638887cdfe67ddd73072148de9e39d94e3830a8f. 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/BCO3K2300201.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c90dd07db35020c8771688638887cdfe67ddd73072148de9e39d94e3830a8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f4d7c17e21801d3089674ddb7f11e203b0f5ab3d0f745a233ae74feafbd050. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d7084884b616a568d9633821efed1ef4f01d93cd50531f7cafc996546b1a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664a3d52d6cdeebfa5990eda446c71b290a4c46757cdafbc7f9368e3b41d1788. 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/BCO3K2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2634b7c1ebb2f68d4f742dfd498114639484b124856ec69d2446ae34d537f192. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2b6eb81b8bba5ec2efbe66be60ab13dca4b83e2fd961dc22a20c7569fb6525. 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/BCO3K2300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa33b7bd072041ed68eff2532dcb47c712b92be8aa98f88273fa925b286d21. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCO3K2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e63549f9073ad8518f6d8d1d98c77d146b039845366319a72fc610810522df. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCO3K2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e6819009b7a8ca6090f716520af609f0014758130d166d17f7dbdba8e499dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841c187a6b22c6c6ee93d0016fe997b8477e58929cea0fbcaab33ddc3dc4e2aa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCO3K2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8dda37c5fa688f150f8f0fa238f69aff0fd5f95ec4ce7669d0090a7c604131. 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/BCO3K2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8d2b2e7181a296e98329eeb47576e16f5a4bf9ff5af913778a8c9bca8e640a. 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/BCO3K2300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583573f91bf5b1dd2808d1f79d0c81886a5adea52a9444021fa9952053b6de8e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BCO3K2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583573f91bf5b1dd2808d1f79d0c81886a5adea52a9444021fa9952053b6de8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCO3K2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087c22ed5e729b532d8f774ecca4af14b2f00dfdec4f3bdd419da4ecf09bcc6d. 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/BKO8R2400001.