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 0x8d27243a26f874556639bab481b53fa59f1599ccab1030e3f0a3d56ffee6b42b. 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/6de2c2bf-e54e-4236-be6f-e29c74345547.json and https://artists.proofprofile.net/proofs/artist/6de2c2bf-e54e-4236-be6f-e29c74345547.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 0xd92de265623204f38ea7d17618126828411d55a67b177d34aedde68d284d82bd. 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/RUA1D2531759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c181d25e5f0a9eeb44917d293c437c1dd1a40c616143def07bc2acc1336615. 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/SMRUS0078549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded47ffa3f1d902cf43737ae444f84a81bcbf0a4b32d0ab6a1df6982444a8bc6. 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/SMRUS0077659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d88806bdaa158c8059cb79423457f224c29b514e8504a6baf97417fe7c9aa3d. 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/SMRUS0077408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1772723d39e80c38e90f9e950c59e4b8a16279419abb0ff1d64b6e57ef5c8a6e. 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/SMRUS0077033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85d6afa7022076abe90e778ed7b8337c62e751f652aab9ffbe50bcb7db730b9. 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/SMRUS0076914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1708ca35b82d8b84dff8f7dd7cec2f110e37edab78612f25564b583a962489b. 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/RUAGT2343156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dc939fb0be55b48e4e1cb4cad177611f003730cbf39bfd0315f57b1c5ed497. 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/QZNJX2381348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ec42ec856d7a83ebb036457be21dcb2a5bdd444bfe60a7e7388622c32892a. 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/QZGLS2317024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e89c7a74130138d741c7dda3755b983515fc66a14f2ee4ddbd5a9ea7702fc3c. 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/QZW9M2244672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf282eed137f2e7f18cd396d1bad5dd0d8905324fdfdb5e962f0b15215b64c4. 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/QZHZ32296779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9825ca404548d356ec517fbde7182c642f75c59d20e8e8b0fe8b2a27f7b87e00. 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/QZHZ62160869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de6cb7654dd3460b60c0e6a134ef653284ee0f73e1608dbd8faf592602b9f2. 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/QZNJX2060106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2745a957a819f965fd8aef37558731931be8107c1a3bb56b3965002fca08b0. 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/QZNJW2044234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca93209af08ec19e66c7bf2d318cc1f8f8667d679154d45d9c06e0fc97b7075. 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/QZHZ52027012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534afb078dd2396c07d3c596737753064dcad5b44159eefedeb90a0ba38d0909. 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/RUA1D2441242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb72de5c6f66665ef5972290a785847d6caf4a3d4e809b1e59b22ec62103857. 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/RUA1D2441243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95bf96a49fff74d7e93d9e302ee84e4c6c7ac352b538201322562f4164c313. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/RUA1D2441244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f5298b3bd598b574a4242fad7e933dfb4d901d9a089b87d81ca4b6f58573d. 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/RUA1D2441245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb61c640711a6f40ac2db2ae33f32d3d2ba410aeb3cb3202f5ab65ec86d39e0. 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/RUA1D2441246.