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 0xb9f7a227cd06aeed65d84749402a9f3f870378ba46e847800ba18479715430f0. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c608b36-2ce4-4f59-b0a8-414ce9f2db28.json and https://artists.proofprofile.net/proofs/artist/5c608b36-2ce4-4f59-b0a8-414ce9f2db28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
See You Down The Southeastern Coast Someday
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 0x7c44227d0cb3d1f362f00b8a39a530b49f97b1cc43a888f32986dd103f1a3a51. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:46Z), 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/QZHN32560751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd549424af3a3ebb3fb267e64d7640c3f22c356942a9f511bb24a23d3fb147d7e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN32560752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f1a7141d9e8be80ec0dc11d135211d8b27eebb3af84dee63e2c0d2fe535dad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN32560753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fc2d5113200e366a0d403b6ffaf0e97292146de0bd541f09536f66e78300b8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32560754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96c8507ffafcd57a3b997429e5b8d52a50eb03d29713de496fb4460fdfa78e3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN32560756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5e75989afc5b884c0a9c8b3e8cd7b2ca75839d9d7e2e769ce2fd1ea950df2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN32560757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae31dd957dec395dfdc4bfb77a02feb18d32aee0d5be28cade484688e437b796. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZHN32560758.
The Last Spring (Short Film Music Score)