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 0x3db83c674bc74898c8438f3d3e7ae73a78b9aad79ef1f75f63eedd40b86203bb. 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/aa1b7756-4d2e-4a73-8d10-0ef89931ef60.json and https://artists.proofprofile.net/proofs/artist/aa1b7756-4d2e-4a73-8d10-0ef89931ef60.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 0xa00e5445621e541cce62ed1f1404dd188c6a2d769ec4ea97b0fb99699084a0f2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:36:26Z), 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/JPVI02304299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc7597054af847fcaa84d335b529b6dedbc64574572437b82e1b586fa743d0d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI02400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acbec9f71896420cf100b595ffd11d75ac8db874426f2678480f27c8c8947e4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI02400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fbf1ada6cfeb9f1f75bd53b32730d7f9e8f0934f531c97e9536a848abf88f0. 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/JPVI02400631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65249c0d1747374e695542cb2147436768c2a33c32539d4625e750afb18e21c7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:09:09Z), 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/JPVI02400632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8bb6b2fc8185646802b2190a0f1eff25720774a5ff2bee627c877c2995ab9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPVI02400633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00e5445621e541cce62ed1f1404dd188c6a2d769ec4ea97b0fb99699084a0f2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:13Z), 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/JPVI02304299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc7597054af847fcaa84d335b529b6dedbc64574572437b82e1b586fa743d0d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPVI02400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acbec9f71896420cf100b595ffd11d75ac8db874426f2678480f27c8c8947e4. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPVI02400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf302df53e5bdc6f4ff10987a0ffc2b70c025fdbcb6c385c1fe57229ed2dcb4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI02400630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fbf1ada6cfeb9f1f75bd53b32730d7f9e8f0934f531c97e9536a848abf88f0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPVI02400631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65249c0d1747374e695542cb2147436768c2a33c32539d4625e750afb18e21c7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPVI02400632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8bb6b2fc8185646802b2190a0f1eff25720774a5ff2bee627c877c2995ab9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI02400633.