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 0x04958a7e45e5676116047f92ce935de29aeec334411d522cd04a95eae80b631b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29cf5df0-6868-4c9e-9cd3-218e80d2e526.json and https://artists.proofprofile.net/proofs/artist/29cf5df0-6868-4c9e-9cd3-218e80d2e526.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 0x8a41114443c100468c46c680f448062924a62a01a8d4a7e302c613d84d53a05c. 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/DEH742420224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bed64bf2bb11985061221b93002ba33c96416b4e4592d9fa42330bad98a22dd. 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/DEH742416498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04608b589edbd6bb7d79b3a1ecea7cde108af28db73ca54b6b3f42e8f80cbf24. 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/DGA0P2308813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cfcb6c167809dd309d8ebcd1bdbfa5299ed015b43b57fced3c9300f562fc10. 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/FR59R2320135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306bd2d23112b557c0efdcaf859028c3a61da37bdb9cfdd0c9eb6cfd399246c0. 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/FR10S2281371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e474ac06ac4875abcb3b9d4a9f8f0d75a42d616781c6e943e3e99f8b7edcb0d. 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/FR10S2281372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3d358011662585d264cf050cbc2c93c3639cb727f7e8315007742fb516f5a. 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/FRX282159216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeafd475638feefccaca2222fdc4ee4c028a668253af424b46cd7b0ef4b503d. 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/FRX282159217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15a5a2f784cac66a657c84b199b34c886ff92d6198128541f18fb9dc92f953. 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/FR59R2158612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3e509396c20eff51ebdbd130ab652ff281a8f72798ef6501fdc805efce0fa. 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/DEH742442673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f2bb4e0ce75a13f5e9d2824ed54e962645f3b210bc3c0525a27e23421e49d. 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/DEH742442674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8ac86c30b36f59b453a073978be5a028efd0a4768db83d0fd8e3a35ef452a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEH742440826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946c58b082ec6c182110a1c16334a13ea38ffec6492b937153d907f9649ccca7. 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/DEH742436081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c30f14625ddab4f46d2dbf793f9d27422db4c65b5be05097c46eb5dc382085. 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/DEH742433213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef743782b7be03c3dcc4b7ab7f2e46f989d28b2c043875ce12f0b8da5ec1ef5. 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/DEH742434140.