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 0x3d246a5cee1b4bc62c44605e7e336dbec88a9908e5cb5f24323de14b5bc551f1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb357bd8-ebf2-46fc-9b1e-542f48ef24ee.json and https://artists.proofprofile.net/proofs/artist/bb357bd8-ebf2-46fc-9b1e-542f48ef24ee.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 0x1dd6d5a591e3e3ce43fcfca2c1ff14c22d31dc6dcf2e4967137db61ee21c2374. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU332400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb1ccef193632e2ebbf96d2f149e404bd0196da84bab0e254c29af2c9b0837d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKU332400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969144455c06080127f90163a2185e6c55703afe472c022cf42ad8495c0795c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITV262300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08267417887ec0f565017edff3e0ccee22db93daad1d0a7f0558aee46dc8ad68. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITV262300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18ba473c64b52867df8939a488ba645fe1a1f3fe713fcdafb5b2094548de30. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITV262300157.
Cosa Bevi "What Do You Drink" - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b542c879ab463d6c0f9f7cc3d8c9d0b1004b9adda9ac8bd3adb27ed9ab52b81. 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/ITVLV2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ed9a9cefcfb9d7e86b5b89d6cbb13b4742d92860d1e2d8539f5d87a7441e7. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ITVLV2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648abadb1729009093c68cabc266e0969f125d72e31722edece16d5b4ff9a053. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2374483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a9aeddacbed0c5eb890d8eb34900224b8b2968659e5c98785795ce705b9e85. 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/NLF712305181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b26f5b8246ddf2724b82b63f5107a72fd53ff0206880b3557b70f100a460ce. 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/DEZN82123762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb941f9c2b59bcb6f813392cc5e8e8fb31fd99e1b94b41c422024ad6d1b482d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITKG02100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2daf54950cb5f360a515511a7ba4b74872f09297ca92c567ff7f3485c10b37. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITBQ62100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d5d6e0da36e82339510ead70c16ab6a0fed24f496bf91bf15ea13a787b2479. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITKG02000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8ac7c237cb1a34f4a91bea5d44c3c08b124d7d1d644496e255479d9be880d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBNUQ1900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af16a37d46183e2d82a620e5c4c37792939cc9b3f1d5a70571e33784c2799a7. 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/GBNUQ1900414.