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 0xf93c1bcd1465de92593e09d819fccfe5b4293680cf06c0ff4be2983cc0d70a90. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fa3178e-041d-44bd-9e33-65b767e3aada.json and https://artists.proofprofile.net/proofs/artist/9fa3178e-041d-44bd-9e33-65b767e3aada.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 0xb6cd7a59dd64dc08ea1fc80a51599f057978b1357ea52a925fa673d130bc11f3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACI1541138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1693eccb028f477a05fb541a70e3619b8857b33a34cc9344d7b4afc9c7cff473. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:23Z), 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/TCACL1667848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f94bd9507afb98eb324600b53adc36881755bfdb111b11664d606c70d79ed7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:17Z), 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/GBKPL1776228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddac41fe41ae0415db9a93fbd944d62130d16450f50af547fc8afd76aeca2b02. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKPL1784002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f281d5f860ef3cc0d242ac7fef60447a566c8feefa1613fc10790b8c8f680. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X41880764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220c1c1ceb93674dc8e0e114ca27bd741c1693a35994c4bd2aac74b17f6ef1e3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2006796.
Summertime (Kept the Blues Away) [toucan sounds Edition]
Breakaway / Everybody I Know Moved to L.A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5bb96ab2d3e7416953108244922c5bc044483c372b1ae0d7729871d93f2b60. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGH2225134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05836062f7ae3ec163e64f5935dd8faccfdcadba8d855fc6e15057bf50e05a. 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/QZWV32343723.