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 0xe47cbedcbb602c349d8b171d5790ad1dd34211e40318812c1b377649b3215fdf. 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/77a7daac-f9cf-43fd-bc2c-4a73f916ada5.json and https://artists.proofprofile.net/proofs/artist/77a7daac-f9cf-43fd-bc2c-4a73f916ada5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zombies (Music Inspired By Black Ops II Zombies)
Instinct:Extinct (Call of Duty: Black Ops III Zombies)
Eyes on the King (Inspired by Call of Duty: Zombies)
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 0x3802c2f0641230ddbf448922f8718af6c506c018d59959d88d43ba220bab1ed7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADE1747569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5dec013c90c71c9339895ef0caea95796a1c9bdbbb9042fd9cc33a3d2f434e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCADE1747606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b388f73d184359810922b855c0fae649dddb72a284db2d346ef7b21e836ba7e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCADE1747619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1fd4816581c1e67f6edb05929c4dd5e29371da70ed9a1ae7517217c610618. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCADE1747627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a84c443a442384332c263297634db4969e1232731add1a508670a6e98618b68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR1940534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e8d2c50dd360d51ec31ec4f9da1780695119d87e7479a70153dd22fd905d6a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CA5KR1940543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a92da43571a89c8b6b02236881634f1ecb63f19d6986e1fb0e1bf1ae0dc639. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:46Z), 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/CA5KR1940551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d91a656a1712c435abef75c215fbe4178f6f281847c03f99ca5a84b3168c19. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHW2495670.