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 0x721b340260e68849e93278025a187ef77016eda6f3a437ecb8e13b1e3a1f7871. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72d740ef-e994-47dc-a487-926acdaad5aa.json and https://artists.proofprofile.net/proofs/artist/72d740ef-e994-47dc-a487-926acdaad5aa.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 0x7722cffaf0a462e744b3645be57ef59dc81b879e7052672cddc199341eafce41. 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/UKW3Z2401549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da03af782c9a4ec2b537a1e8c7a165d830fc40346c3761fe8aaca8d6e7f9873. 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/UKW3Z2401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1888a65482c25c0f995c6b209be34e072faa0819478b99c013361904d8d3e8b. 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/UKW3Z2401551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cf321dc5fc4bfbf54920bbf02910529a74b2a367675fb6dc2deda5710a883. 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/UKW3Z2401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c88a43fb184c556c8bafecf6f4476fd8020edf5873d093f5b16bbdd5f8d5f8. 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/UKW3Z2401557.
Come Up Here (Beautiful One) / Lean Back - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec90530db5584c543246b9ec674b3af4a4dd90c9f75d6a248ae30700b88c3fe. 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/UKW3Z2401558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d33f2f93a8c46c01ae276de6516742db958f45740c332b4a5c06155adbed28. 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/UKW3Z2401284.
Come Up Here (Beautiful One) / Lean Back [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de23c5bf1c204d07ba17fb6dfe7c75c0fe1e6d7758bd87d90d7b853d341144. 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/QZZ662428083.
Come Up Here (Beautiful One) / Lean Back
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de23c5bf1c204d07ba17fb6dfe7c75c0fe1e6d7758bd87d90d7b853d341144. 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/QZZ662428083.