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 0x1ea8f8b737b6a26ba432024080fbbca75d9f42a75843aac6e817e9758ac6bae5. 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/d94454bb-5560-4bf6-b1f1-f733b1c44922.json and https://artists.proofprofile.net/proofs/artist/d94454bb-5560-4bf6-b1f1-f733b1c44922.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 0xdff1a7798c3221ce66439fe033a41cd4efefbf255491c84048883950073fa265. 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/AUBEC2471802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b3b90afceeb681bbc67142c7e57877abd46e454e765d3d045dab6606846b9c. 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/AUBEC2471803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c79c668667cff37b222a0f19523b0f8a33d011f7f74eb2ad148e6bbcb73f09. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/AUBEC2471805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe162eda4271a9387db2342d9a0407f7aeeffe6456a68b023f37dd34456456d1f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:20Z), 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/AUBEC2471808.
Expanse (Étendue de l'espace) - Guitar Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d061ab15da09864722ccf7d55965f8a2584bd8bbf308ce1a59cb0cdb928d54d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/AUBEC2471867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824be1120eee663801ebe2d31bf0f6977254a545c4cf0b4de9e3fccdcc57233. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/AUBEC2471791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451e760f69484c7ccba131d9c776ae4b4a9dbe0e8aa6b5c4deead73610c8b76c. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/AUBEC2471796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fde5d4c540ebe69c1d0299aadf101bdfca9a20c41a39887992ea95f300032c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:34Z), 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/AUBEC2471743.
100. Yıl Marşları - Cumhuriyet 100 Yaşında
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53a22342ce67482dced414c221cf9c74a6de2d3b325746816bea079533494b. 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/AUBEC2478119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c15eb43c344915306859d8bf4f947cf9718e160aa823c829bbaac977ac9ab. 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/AUBEC2573871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cca0461f998035801dcfb00e77a360fe7c31f0ba9ed16e4bc77dee680a6764. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:42Z), 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/AUBEC2573872.