1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x47ff6fe6175ee1e43e736eccba1d07ec60d631fe80314ed1bb6266ee7a3b3f2e. 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/9fceed06-214c-413d-bcc5-1e5cd58315ab.json and https://artists.proofprofile.net/proofs/artist/9fceed06-214c-413d-bcc5-1e5cd58315ab.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 → block OTSBitcoinBlock must exist at that height 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 0xcad549d6763346abd439f537e301baf7fe9895896ad7c4d365b38f4d5f46746d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITD542100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69bae3f815b12ffc0acc193ea0ab9f0ffbd2e35250631a8d606fd75ab63a360. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITD542100663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e06fe56809d4c8f7394f1852b01718654d646d111e6afb83f22c79bb3f5a04. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ITD542100835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8cfd2f4b65e33bc47520749433c47b0df196a408238566c1662d2fbc9943f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITD542101177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0dff41a9f4b670ee2b73e0cfa62d85128f387bf0a75da65d0d5e1c4a376106. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:20Z), 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/AUMEV2231140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01301087b1183b8564fb424cfb4a15e4785d02a5336e6a318de6d4fa37fadf3f. 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/AUMEV2252967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a2486f3fe0e79d5f13f76b9eb4c797c3fa4159877d1d7e740ba86df6961ab0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AUMEV2330317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085fa87cfc463d1ac8e8c259c1af9b30283fd2ba40bb5b0e8ebface37bdcc0f1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:28Z), 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/AUMEV2330318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45916c0788637fb13816fd65ae29176a779509b86afdd07cf73853acc54e0be. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/AUMEV2377498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2c2e8fd469f7498dcd70c38cd1ebc38a600003c03ac2f59bc179c41722c679. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUMEV2390509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546d61345a27816ff54d5f0160931298d2298f1001907309ff45f4d1ee15577. 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/AUGBT2309217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d6bdd50d2ec8db6d3361487e22b1d23fbc7e075d1ece3685b8d15a71e7a747. 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/AUGBT2334071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f98dea4cab19b688b7062ff214f0991deb6177dc3909e989d9b10f7d30def. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKW3Z2500684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20724116f669989b49375109dfeebb042ce9727e7ac5bfdbbc4477ee6e1c24ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKW3Z2500667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66fdc2181c456b905dcf5b784520480003f62eb8587b504c619fcca7a70c917. 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/UKW3Z2500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874139ca9ee3f3f94f229691eafb2a6974e04b5f2bd0af488c0fb92f1bd597dc. 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/UKW3Z2404088.