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 0x680106ac569e3973639da623dbe05664fd7b23f2ed1c9c583f4e4503b168b70f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99881085-7a05-4edc-9e92-7cf615cbbc24.json and https://artists.proofprofile.net/proofs/artist/99881085-7a05-4edc-9e92-7cf615cbbc24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cole's World, Vol. 1 (Nightcore Version)
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 0xb5b1331d665a93ebf82104a5788750c1d39a2f01f5ea29a450122702ba61b0c0. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZPLS2157121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1481cebe05c0505f01d7c3d58d412b17c0e8388597c35dcb83a95090e2300. 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/QZPLS2157115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94de43857dab8550b0e382930a647595288497c0079b3acf3ae7a32cc3134f2. 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/QZPLS2157111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de3eef1e82d229a4fcbc4cec6fb824fe341bbb746d12595e26861f320b21e8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZPLS2157132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783786cc0e260385b07b709417dcae36f3eae05005dd101bb15860465cfc0949. 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/QZPLS2157129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee920a4460328ab987e4603042a6e18fdc8f332c937e27a3056bbdef0e6a5d6f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZPLS2157125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c0f073494782e5c12ec27dd0a4f7bb4fe40242146b5393f157249263f118e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLS2157112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287f037ede84c0a6d29928199e1ffbbe0da9f644a2a1f4e904d376691b4c64cf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZPLS2157122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebf893cbe0049090e89b8c5b7125a5ab1dd43d68ffe137b97329ba90b880b04. 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/QZPLS2157130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abe42c81bc897dbd0c6371f59017f67d7dee5a5d51fcf0092f828ba66a1bd22. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZPLS2157114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01710618181ea83d0faebbdc6c370da29095fb97dc3f2509d3ea9671b061c6b9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZPLS2157126.
Who Are You To Judge - Nightcore Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59dd7629a9f9df2b7442dc46eb14503a40a65c69a15a5016f7a41171196e26a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZPLS2157131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ffa714e894903805a73b145b2101b9bcd704fcb7fa82416e3273f986bc8da. 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/QZPLS2157134.
Cole's World, Vol. 1 (Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69761a225097937daca21658d5264fa186af571f9df49c2af59d38b3e9d2c498. 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/QZFZ32270619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b220b372f7dd1874d0ece96d8262e48733be80777baf2de716b75e12c2fa9f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFZ32270620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a393a02f6183dbf777177a45e43b41f75334ae4ef49f98951c7d2b316337c54. 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/QZFZ32270626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af6ad8960d2a9b9bda92f5265f613cf02c096aec0b56afecc63f7070a6e7f8d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFZ32270632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe7d2d4614f9165cace87b82a261214eaf64c95d7d7cf274efc73475b652a0. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZFZ32270638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec90a563de6ec4647a1fa918393d1c8a02a43048cb7d8b9318a0fcd6a1378038. 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/QZFZ32270639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3e50808432cf58c3b5f47e67ecaf5d082d64228dbb3b28aaa4ea156cf8ef7e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZFZ32270640.
Who Are You To Judge - Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfdde892f433bcc72a7ef1e26716d12ce6c5258292855f70ae01dadc7891b7a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:29Z), 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/QZFZ32270641.
Baby Sister Freestyle (Nightcore Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d89c22d50e735820a1b59b1f7e1c63be44e871aeba18106cece0343cd5ab33. 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/QZMEQ2205725.