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 0x4c9cde28bf194e5bdbb34981c96136df72f4b2a0c74225f77c0e9f2601651fa0. 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/91e5b613-f993-44d1-abc2-b575985f7a34.json and https://artists.proofprofile.net/proofs/artist/91e5b613-f993-44d1-abc2-b575985f7a34.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 0x0c96903a6ae42b7f30af16a9dd80b96bb64c7f84c97437f55159745d3037b41c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/UKN6K2200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a4121b68d745bfdd8604e1981ca16af0ffcace275e6fd61c6a50ed7716ac1c. 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/UKN6K2201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4a73f3e3bf4e83a6da926cc037ae73294dbd5cf40cc4cccd03e4511284c713. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX872239428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8782135a9ae133904623381ac4cbd958884f833a23001ee2ba9109e95e1052. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FRX762336899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503589003d8d6f4ea4d167ae8ef0396fec595b0e7fdfcc720276668b750c45a1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:21:31Z), 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/CA5KR2433690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7629e32c90589f2694e95386bf31f37bd062d13d42950832527a97d5d4c61fa0. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/CA5KR2463119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8063ef5262116d18485b7826ab3e47111fa9ab9eacfc039b03ed20af9697184. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLE802400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d332a18294bad3012c4fac438c0407bfa773bc73e90287e361f2985dd439be9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DGA062450452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb442898d34427ec51de96a8f88c712614ace56c9103bc09c61196aab444a4a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA062450450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5740f4d5810ba43a8a0d0fdc530b63ced18d7bca35667ab71b5c42cf826a1b21. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DGA062450451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d332a18294bad3012c4fac438c0407bfa773bc73e90287e361f2985dd439be9. 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/DGA062450452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c6edc7fe28301803aef004039453a23a0715a70590551759bd2106fc373d9e. 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/NL8RL2439392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037127059340724442aa747962f2e2ca8135b3ea008649bf20ec725a80c166bd. 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/NL8RL2443420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a13907a8745acd04cb0bb745a7422af07bfbbe092d1ddd61b21fedf3239cc89. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CA5KR2499511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e59aa232b46ccc3868a88810ff3393364274953137eb6332fd463d4ebd67cd. 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/NL8RL2443422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a275aa1ba65007239190f2b6c6bc9d2bb1c07bdd9212abfdae6391c8b88167. 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/NL8RL2446736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132afebfdfd9becb21d32fea165d49af49307ef4e3e443d130b385bc30979f3f. 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/NL8RL2446737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bb3ea995e964fe030dca05fb8a145bb362287f13ff14841877cf48ce80bfd5. 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/DECY52500679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8063ef5262116d18485b7826ab3e47111fa9ab9eacfc039b03ed20af9697184. 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/NLE802400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ea9830c9d3ff5c0e8891a9fe7ed28ac9d334e1913423bbf89bff489980bfc2. 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/CA5KR2475560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19c62fae9b2fe45efa2125dab71ecf0df313e804ce85a23f2bc64bc3275906b. 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/CA5KR2413545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022a1bce78f26369ca9d6871c1e2221638378bda7ab62aed5414bc6c7b90c6d3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2459881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e21c9a7b2b10e51798a8be4eb7f1616f18432bb0a82e90ff97914b2e0b8a8e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2391327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ba0a3c9fd4be98d79097530c9a9386402bc048365dff5deb9b650e90ba0464. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BEN582300036.