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 0xde322c092757ed6b82e1683c35d12673d5f51d0f92aff526d780c8a63d19e8cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ae8335a-2116-41e7-a801-df7e813918b7.json and https://artists.proofprofile.net/proofs/artist/6ae8335a-2116-41e7-a801-df7e813918b7.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 0xa32451ef1dacbe4f4c85166952f703d3b213916a8d2195322f4bd81de67fc3bb. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/ZAIJ71000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d574da7025f7d7f60f688fdc98a42bae6bfb599c33faccc310b75863c9a654. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZAIJ71000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eabb7f509eb997bd3606ae69e8e4df1ffc911e4a116b568d8697da154d4aeca. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:34:34Z), 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/ZAIJ71000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e6afc872d8f8106c890106edfe7f54d1393bb537797c3c2a7c85a0e57a0c13. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAIJ71000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6ddc2d771941079c1871b699accc8bdd015ea380e39d9cd6d07ace5a861c7f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAIJ71000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54055a16069afdddfa3669d21de18dba46f62828abf1f63149b277193a672c14. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAQ652207096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fcb1da3e9a8d32a83afde3cc1eb9d77e27adf999635666d81138f72dc9657e. 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/US23A1540514.