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 0x07d131081cf178a9942c6a97dbb95bdd2b297465f0738c7fa1ed65377dcca3c0. 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/a7f89059-08ec-47a8-929e-dad06da44792.json and https://artists.proofprofile.net/proofs/artist/a7f89059-08ec-47a8-929e-dad06da44792.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 0xec7ac0077c42d0b5accf0c8045923384dc7455ba24eec599a6f532f34eb0fd0c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZ620400084.
Por Que No (Alex Megane vs. Marc van Damme Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99c378e08c1315b9bd55084a2bda426c6328b5c717445b0bddfa67aa6ec0dab. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:41:24Z), 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/DEZ620400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1d41e4791d3fc0fe3acc56374e79f435ab985ef41ec217ed4cc20e8647bf63. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEZ620500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01dcd9869671c1e401bb749de4129df32e9aae76d79f7d5f1683f93b8d090c6. 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/DEZ620400081.
Por Que No - Alex Megane vs. Marc Van Damme Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6d6f53b87a38fa58ffc9df8c91f7c2bcca46f4f130a188102566aa5939994. 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/DEZ620400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6d6f53b87a38fa58ffc9df8c91f7c2bcca46f4f130a188102566aa5939994. 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/DEZ620400083.