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 0x127e42ba510406d87ff2a1a02b4446ce0b4d1593fc5d3ad96fa69e1f93cff5c2. 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/01652185-ad34-418e-83ef-8e935c2fc13c.json and https://artists.proofprofile.net/proofs/artist/01652185-ad34-418e-83ef-8e935c2fc13c.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 0xfafa2f658b3340fb7f2070b2a194f9873ae0861ad8cafbc0c598b15413665ac8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DESH61700228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d2c52e9cf3c97e651a14c3076153885deb6eb217335fb9c226dee1ad2c0ddd. 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/DESH61700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd8690516336a6ff7a65965a258b69c7c2d5e8eeac975ae348a0260e4f07cd. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/DESH61700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee482e33f13342e9327575001788e31cd4ecf894e8513d94f35041c9f549a2d7. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/DESH61700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1875b291c22820849af61799d1aa896f5d522483d48566bc6d2a416df0e31. 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/DEKX51900881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd471ab5bc6b82a1817eb72ed10fbd52b696ba783a6601ac07b85549512ab891e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:14Z), 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/DEKX51900882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd2c5c688c1d48509065323a901fda99d0d2b949163adeb5ada21dd0aae37ca. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:39:21Z), 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/DEKX51900883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6bd68f7edecf600e303a6d9636a52ac9ed51c14e58b27ef99fafd6aa1dbcff. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEKX51900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca8195698a1998728deea2ea498e3c9ab3469de2cd222117080eacfe878f23e. 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/DEKX51900887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7122769da483d5cdbf25997520e58e64dbe72940a016326928014b341c2ff8e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEKX51900888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63289475306dfff5c1e84dac7307e5ae3a75eb253074b5a4d0109910ad64cf. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEKX51900891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c9a8c8e615f4bd295cb71c7075af185eb317c3fabbeb494acb21e526e85d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEKX51900895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a06dafb3ee7c634569e087adcdb7458112103373b3d622bb4d58a0f32f81eb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:22Z), 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/DEYC52100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f35c1398455f7e791ce0a419044342d5c845a93e05841b4e086ccd670d3f9. 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/DEYC52100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afde461bca4001dda07bb336b499bf9494622f66b6c5da88bda5761f57273b2. 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/DEYC52100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06287a5fd7ea0c7b7d6777a3db619a9df6b81399b860fe8d74958a48b5c3d435. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:46:39Z), 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/DEYC52100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db1268be96271c651c53e56536536b0745c8e5329014f0609f4dd14d4044ef. 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/DEYC52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd51dd1d91ebaf2445942d2fbf33bfb280c67e6aae75cf0559740811307916dd. 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/DEYC52100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7b703bafe2e221b77b749efa30ea49690b59e3955f528be978f1436dc3640. 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/DEYC52100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b4dd20c2ab8a697e9ced64ce6d9c0beafaed9dd8b65e8ab41d096327d350a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEYC52100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2e51746f39fe40d5c30f502da83b6e4a3649593b7ff3f50d1e4caee621d916. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEYC52100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3313f39294042ec9219e96e79afc62944e27584a969053f55abdb77fb2702308. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEYC52400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d45d4ac695d1d5b9bc6c3dd07302d2b2db53271dc0b49c746614f25a9f8bbc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZC62470240.