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 0xbfe3b43fa228c22ca71341b5ecbcdd85a6b17cf19264e7852dcf758cb18612fb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2942b690-7df3-4abe-8e4f-62555ded5087.json and https://artists.proofprofile.net/proofs/artist/2942b690-7df3-4abe-8e4f-62555ded5087.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 0xb16aa453384d447f4203ca928c3ec84a0e7f6fe43f4eabee87a622d29a1b7f96. 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/DEA811400978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481592376069a3b9f9feb462d9b118a8626790c54841302d78a26100c82fd607. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEA811500908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c557e5768266221e54d418189c7f2ff0e91e8b74066322542859b1bd2d155. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DENA51803691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85c821455f147b6fd88481d7ef166a3872f45c278740fa4b08d5e71c6b54c0f. 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/DENA51803696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebbce2a2b3aebfba56e5fb6166b11617a4f7317b4bc1be9971f5cbe4c918ce5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEL711900127.
Bes et Leech usjeiht - Fosco dance Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3598b184f8ead5f243c1d3e706210b6a0b8e9f2ece87ae27af8e492da037ab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEL711900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eab35154a2c1884693f511e4f40c29e15891b1cf7b28c8ccf51a34ed114ddc. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:53:17Z), 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/DEL712000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e91c634fb12d426b737c131d4ccb70edf6a8ce610687ff483b40946210daa. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEL712000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddf1b3f8e20564c7c7217078ebca5c6d405e4623878e8bf233f0b5c72078acc. 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/DEL712360004.