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 0x3200864b0252293d3b163bbbcc860be0f806d30d0bf389813a81db54b831687c. 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/597ae6f0-fd93-454e-9fd9-fbedc8dbb1fc.json and https://artists.proofprofile.net/proofs/artist/597ae6f0-fd93-454e-9fd9-fbedc8dbb1fc.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 0xb9d5b5ea28fcea8f805d48f75a9d48dc5008d0de4d7f434f3e074b9910342ab8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DELJ82005333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63110efffe7004a58d1aaeb49e80a24a17cd39215f7304e2bf8ea65301ea988b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZC62187254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1584c19de20942ac4abd3c2e146c989c85125bda281bb77e7f385080518fe572. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DEZC62100729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b4afccfbb9667b8aedcee1f3e898b166e008ed6ee7161bb17e1d73d4fa810. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEZC62123366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f9e40a16fad6b086f5473654987ed989061c3c4f032b1f41f0cfba0821c9f4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:31Z), 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/DEZC62111642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189125e7ae3a1a215cadb8d2a511327bd84f1af394bdff4b488daf1564d596d. 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/DEZC62123368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6523008ab78373988682afbf3f43bb697c154de6f86e75108a6c751bbf4f7c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEZC62123369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5d470df83a2435640d9cd4d0b080a157fb2d25d9080648a00bab702522ff6b. 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/DEZC62123370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da573a32828b05871c4ac18813fa1285a0d2b0ac968460968c3c4bace29444c. 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/DEZC62123371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43609d7f0ee37a2a3f037ab82952953c75d1686f2685846203ccef7e1c77818b. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/DEZC62132706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb09275a4ac6890835c8bdfb697298b95758eef4913e3a964882076366b164. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEZC62273106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6b86cc635e971f3e7dc3152a5e6f106c1fec2410dd62368def126715251b69. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZC62287403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a93cab8a4bfef796002d57792121d689d05c93066ddf9b20bae5feccb4d86d. 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/DEZC62297629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d36b591983e6159192fff77455991c6fae4caf348b9c3cd07878f0df97dae8b. 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/DEZC62201094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de05b60cdbe6570c62045f261e78c3514b2cec3c37de81c626460955fb56f94. 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/DEZC62201098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7000eca3a7ef586d56aa9d98f166fd2b0915a3ffa9ec067fb59427451e14cb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DEZC62216546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b38f8c01ee2fc997b620b9f0f73775f0801b10ebc9acadf1cd1c578782c83. 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/DEZC62348896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7c0d888cae33d49e26ce03d0dd7c83e0754eef6bcb834d5418f012b36a580f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEZC62388203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b26a29cd3b55ae0c77b6939e8bac03fc50fc8bfa0dd92a48c9d2b84f560616. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZC62363341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd53aee3e013b97559171884e2630903c11c83f6e2decc077edeb834e2a6cc0c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEZC62388205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bf60300a630ccba2918ccb382d24a9120adfba379c77f01d4557f472a10b63. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZC62388206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc324999c6001a157a46256b4dddb47eafa26bdfdfea37ce2b776fd64032be91f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62498130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bf60300a630ccba2918ccb382d24a9120adfba379c77f01d4557f472a10b63. 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/DEZC62388206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cfd194c3f5fcf9807e31ac8c0008de1503472556761e41bd3cc0288f82d0fe. 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/QZMEP2158107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5318fd0899d570311c0f115f0c8032ae1896dba6d759b5c54cb387b815e080. 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/QZDA72513343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e32bac22602a01aacc7a854711404645e1566a87b932c5320aed3317d10ba7. 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/CH7812347111.