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 0xaa790a82d5dea0b971312dcfadfdb5c7d55ce44e014c17f7987ab244be6e1b57. 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/3dbff2a1-9e60-4819-b8ac-7e725baa16a7.json and https://artists.proofprofile.net/proofs/artist/3dbff2a1-9e60-4819-b8ac-7e725baa16a7.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 0x364ab57da41362649915c29b13a0fb9ff912a1a497e825a12a6e0fb257c16d6f. 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/BRY0Y1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f73dfc0afff9e81a7bcd51b4825bd025d55c0075e856f064f62da2b9266ee6b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRY0Y1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70391707662dc61f66d846ce9038d86a8d35ec80a86adfb4d47775a2104de45. 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/BRY0Y1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be36c24045747d4fbf8666c8e5526cb9bbabf50ddc67be826f7046cb945f585. 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/BRY0Y1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a94788980b03f7d0f44c2b23d6df9b6d65cb1489f56db9f1108e8c11dac1b5c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BRY0Y1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd22c425657177a361d1f16180e12d993e68a493e0b871ff05966db8eb5b43ff. 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/BRY0Y1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9af6e01551b758fe60fc91dd0518bbf0aa7b9724da56b40543e039f2b5b51e6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRY0Y1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e91959db2949e1dc38d1907ddc675cfc54d07621b512064e13e2e70df16f6. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/BRY0Y1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7c7d1405a0a60823acc50f3a92e5768e370f0ec4b9e017416aa22dc323c36. 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/BRY0Y1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08923f66a4a8eab1462ddaefc011ee40488c1b1db163eaad95de8344b619ec3d. 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/BRY0Y1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a61988267d8ad48e5b804d415a77a722091a9490d7cd67a10af084938fc609d. 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/BRY0Y1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047ec77e75a2c013e523e3b40a5f0e206dbcf20a62066e1f11fec5a3fa36331d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRY0Y1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44336c574c98524e035dacc28bf15ff3da4f1c18f9ccadd3119f157e5f536cfa. 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/BRY0Y1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a6dfc3d882c3718d000906aaed09e54f8968ae7f8e3c36c7759befcdf47230. 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/BRY0Y1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990502315c097f3d0227c95fe7f4a88de56407227075950ef31226dc0abea22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXBIW1700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc190c42785808583dccca8ac6dd0a1a899fb12edde151b520f4c9f3a127c1374. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBIW1700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364ab57da41362649915c29b13a0fb9ff912a1a497e825a12a6e0fb257c16d6f. 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/BRY0Y1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f73dfc0afff9e81a7bcd51b4825bd025d55c0075e856f064f62da2b9266ee6b. 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/BRY0Y1700001.