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 0x82ea80aa62645cb1aff63a8aaca8757cce9605f2504c3c364119cd2950489b74. 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/d976defb-944b-431f-aa9d-d484c49b8e16.json and https://artists.proofprofile.net/proofs/artist/d976defb-944b-431f-aa9d-d484c49b8e16.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 0xe7dfc230de011133c1c8590335c005ccbebf97d1c0469657e66533a5e70d22ca. 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/US3DF2453258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93df33a75f9c92067b8496aa8fde32d4623becc684e8e918fc5bb38a23f4cef1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2474343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b62f77eda563c7060d58be095da6e134e37c0b329a100dfe570d4ad7ae0e753. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2416050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca98872fb242339ea4b7355e9c7b09c907fd64ed03b7a3d6d8b1e917089c8c9a. 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/US3DF2470085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183de3749db65a616efe5e37f20a92acb8bebee863a3fd7ab911e574c4b23807. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2414787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeba6874336727fb75fcf38718c4e88abff677d92baae2c68f7b11c044d1383. 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/US3DF2474357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e481ee36818b7f92f193809379b27e59bbe3c349b91bf906dd350eb08c1688. 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/US3DF2474358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37d1f8a34e28dd14d2490cc29fc29da8fd55324a8b0fac129ea0b8cc64b335a. 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/US3DF2474359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c501e1d841a480083c56bec67e580da6bd8ca4518ca0c98613f224e6db7809. 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/QMANG2256174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5c22eac33273ff85de0816525e19905e070157f970e53c89e24ef40314946. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0H2431512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc152b942bb8b36056cafce376e8435ce372f5d551984c21498b41655bd68879c. 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/DGA0H2431513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ed06d766543c8f929b1d8ca73f5d9607984ad96b538ae61426737fe2100e5. 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/DGA0H2431514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b09f441bac074267aed35163caa95d714ced78d0fc1e018ce6f824bc76d68c. 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/DGA0H2431515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4653be7b3af0f7046001aca0c735559e666517886b9ea31b70e057626ec85b. 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/DGA0H2431516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48b05fa99ae3c5d757c2d912bc1eab0992cd2f20f66f884aedcee5ce928a741. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXD7V2437747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f90fc4bacdba8f96b5d463447e00225a1502f2f0cd3b3026734098dad8f6e6. 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/GXD7V2469928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b032444644bd79182fdb83f9a1c1269b037ab9ab9e62ba2e5ac063be06906cf. 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/GXD7V2442829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9707dfe5a4463f89ef96f240ad56368587da727c639f1786abe908646dfa717c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXD7V2412127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371616cb8de49ebcdb182ef5d86859fd650f26a4dcb220eb0c3a125f6ae890e4. 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/QMBZ92400791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b05bb061c984b6cb0da6dc2ea25cad276077a61a0f8f361a47270d6e787ff. 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/QMBZ92400792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ff99f22c05462f2600cb953a409738330826856ec3485933f6390ca883506. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92400794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ebc4bf1eeaa5685a142b3cdc2f571f2dc6a408ffd71474761465280ff079a2. 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/QMBZ92400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7b59749552a63208d364cda934a77dcf4a68f63fd3071339f4ba8c96dd9fe. 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/USANG2408631.