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 0x030e7be4bf5ef1d5faada2800ee81769b39964e827bc048971b4a69a543fd35a. 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/0855407f-5a44-469b-95ae-18ccacddd836.json and https://artists.proofprofile.net/proofs/artist/0855407f-5a44-469b-95ae-18ccacddd836.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 0x8301479725a6651edfe04b663544e30eb741d55a7968f795f0eabd9feab59df0. 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/QZTAU2111774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a4c7ccf2ab240a05309744938d9eb0ac62a62dea947b3e29f0447989aeea4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAU2111778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b459b2e8e55f7facaa44c9a82a308302b8d6d9f928efcd32c07e7f42c49aae. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:13Z), 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/QZTAU2111781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc614398c5c5678996ebc7369004e2cc4ec269c7bbe70d6511252bc6a960477f0. 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/QZTAU2111782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06636c5b20f1902ad49d87a9f714ea485354ed8faac9725eeef88fe20a4beffb. 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/QZTAU2111784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc5c91c59bacb859e56b97c3676cf9c5b2b7bd5c98c647f88f03e758353ba23. 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/QZHN82272585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ae6af8f737a1feb0639cb148cf493ad16aa2df5a0f3dfff38148279e25645. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZDA42357476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003c25846c71cde03225f23a791a448eb5a23e7494c17adb004e72d010ff820b. 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/QZDA42357477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604582e9bf5be3a320ed560e3b3885628f05257c17a80a67250eee897b9795fb. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZDA42357478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b1cd9c525b24a04f0d89f6513087e51f348b03f2f467a279e0e550975ae20d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:47Z), 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/QZHNA2391765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76e3b6da75aefef598d451dced81b8debc9b65babce80f17a8d17005fc41cd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAT2352975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a7606085397ede53a34c30f34d256eaadb7665267644f0e30135fa8bed67f9. 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/QZTAT2352977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20cdaca346996dee92b2afd09b98a70a0488505bbdfa64aab730ebc05485177. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAT2352978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a037be12a3c64ccc93eb54969e10b6a9cf1a0ed6c0cc5dac7d5a70471509299. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTAT2352980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ef31f4b3ba701eab579d12ce0975a9d8fd3b919166300f2e857406a97dbda. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTAT2352982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5bbf979ccbdcf972f2134c3f1f3d91ac883030fe96b46a7bc47e0747ba346. 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/QZK6J2451310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8371f466eb17948562f31135e00eb2b5499de2844f406cffe28061c0d6cb1fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6J2451311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268cee38003024670b73f148e77a0a031e2e908041fc297a41287aa7c8ea700c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFF2412511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24ed7634f47bc7994916982d7429c0a54cb353d4a14699648b3864e89ca6e0e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWFF2412512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3282f02faffb23fbcbed0503dc71aaf065cf04f2f1571337e132ee70689ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMEQ2514541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10489c3dcc7419b604a516f20e3b320e075285dccaba972565f54de7bbfaab94. 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/QZMEQ2514542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f2705f0fe79e60d5fabba7041e4738dcfa583cadf94c83c38e533b94d087e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEQ2514546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8954368ff8f0b9ffb0a690a9f1c76648da570b2bbcbffc129b83521c6fb4eeca. 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/QZMEQ2514547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb113642cb9262881a52fd9180b69966763a4d4d2849733bddb43042d3e60c3. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZMEQ2514548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba654e1cbdbe6136e0ee8e7954cea02cb0aa6c996ee80dc469cfbd6c1fb2af27. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEQ2514549.