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 0x2c25794f962a35a29d4ae35eca1b8dd28df119b2e3a9eb380415a5d1a7a7edf4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71b4ad63-7e49-49b2-9001-d1187f1f3c06.json and https://artists.proofprofile.net/proofs/artist/71b4ad63-7e49-49b2-9001-d1187f1f3c06.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 0x3aa547d70813a63d5c01ed7cc8c22837b4ae8033b786edddf55e7266242832e4. 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/SEYOK1814735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb045031ec68d6a8652d4a201c5d75079bbe698f383c50d13bf5bf8a6b2f2dd9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEYOK1814736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb965321178abe660bba5f2d59cbb0422545117319cdb7353426fdb1a77a1bc20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK1814740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe055122b076eb0f29cb48390e2aad4b383577bc7a91adb27c76060003b27dbbc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEYOK1814732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d336b60b19242b9291edcc91219fe2a8ae4c6a7a0e72f1aa7380c4f30a798b1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SEYOK1814733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef126afd4d6981105abe353c6b85306e883bab9b53fab1562a82c7d06e2d34a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SEYOK1814739.
Under The Pine (Yourhighness Adriatic Dub Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe876058136661d3be9cbb27b94513cf1c54a816814a27317f184b9dc156e6359. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2403225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0243826b953d3e64dd90b63118442ad9b2c0d1ed8a5c82c13b23183a40db4876. 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/UKZGC2403226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a35e78b6b5d6da5aa763fa48dd9bd3933f2281776a913b9f978a0f42194e1e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKZGC2402798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d39760dc8133923f02a2bf3483824d25ed9486143bb8bc342a9c3370a04c03a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UKZGC2403227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a264034b5bcb9e9b102200ffe5560261837bcd879c4ffd7a11ef07ed1c67c2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZN882217103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4d03893fa87e3e9081d67905c81a6b491cc8b60e8bfd006adf0a002e815684. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZN882203880.