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 0x2f073cdaa521a15f3be36125b801150b09396ad014d985de4a8ce2c1b35e08ab. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19733b5a-3171-479b-a90d-4c2386830295.json and https://artists.proofprofile.net/proofs/artist/19733b5a-3171-479b-a90d-4c2386830295.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 0x2d41354926dbda76a23c034556a8bc6b1ca099faa241eb56906ff653969ebf6c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMJG2322045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3379cc55431a4c6fd2508f74b7af14f9f78879bbef5e64adc57321bcaa7bfe2e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBMJG2322046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af27b5447093b848652c4785b775383ee00af9e365e4a867dbb115a613b69e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:49Z), 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/GBMJG2322047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f2c425554f16e9e3e892646c50eb62ba9fc32a289ae7c2c289e7626425c7c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMJG2322048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe932de0f1341d0947665dfe89e7eaea4e7ecaa416555540924bff2a96009ef29. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBMJG2408072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a5c621aadb27ac8cac333f8d1c88a1b2cc15dd89743663c84099077b9d9532. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:54Z), 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/GBMJG2409584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01139901356925874e4b4e5427029de1429de0ac438bc2baa682cf68a643b75. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBMJG2409585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0113bef48565fe385301dc5c5d7fcdc22aeebb5e3d559c8faa9139f3d01e504. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMJG2409586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ad54ef462e4499b175161529da4150cf065982dbe694b50ea7419725cf53ae. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBMJG2512759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02943ac0872ea3ee4c7ccc7c4a3991139c81559850ab2f2c705137893f2356a. 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/GBMJG2512760.