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 0x189e1d2e97ad542105e13a5411f223c33b8e57fd281fedcef4c07a8831c44eae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75c20ec4-f6a6-4f4e-987e-4c3332d9bfb4.json and https://artists.proofprofile.net/proofs/artist/75c20ec4-f6a6-4f4e-987e-4c3332d9bfb4.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 0x285a14426acc402a83d6cbf5aade5540b5e511babb359d807b0fffa9f46238bf. 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/FRS182078027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20055383226c05aa6a04f8a09da14bf066445635da3c4327c5999978d36223c5. 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/FRX282180172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568683c069625a6cf76152f64f2588d527460a69b31f087557b729daa030426c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/RUA1D1827311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b0433e5ae3d4dc862ff45621961dbe4cc610ba57963245c605af8ee94c832c. 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/RUA1D1827297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a00b805be6954b7b3f7805bd9117b89ed3f5c04e50d25c80b37dc5786193f. 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/RUA1D1917123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19175ec1987f350a7c5f0d882e079652d94ddd094d4c1a024301a27b9dbfefac. 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/FRS182148841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fcb71f624c06d0514eec3099a459b0f8ef7a6a95a71458549e9732aa2c1ff5. 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/FR10S2266497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5c3fc07d2c9a11179dfcd567a3a06310935dde080d0805d4d98d1078eb727. 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/FRX202295839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4ecc47f734ff4ae2b2ea8eb36b859b5fdbe2d073dce019aca604f5f36fa2b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRX282269268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee9fbb4c46f578828958a3485885ef819e4150b635d3f03faed92d69e2b16c8. 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/FRX282269279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc999cc1df3781b4a39b90d7ac1669fa5301e90596c7cae23e7f605eeab898d60. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA092336858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40333ea841e7ad89d9124d3db06c5853bafa611d018316c57da45765f21a390. 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/RUA1D2512284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f6add517849dddb2d002e7c592f3c25f0f7f5a4a10351ebe28bd303993c7f4. 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/RUA1D2513578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84515db782d9c9e27aebf261199896111581d5d6b959492025560b066ae5ef4c. 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/RUA1D2517970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8b893e3603e97b6fa08a8d53efcdf50247a8913e9bf8d14972eb76f99bddf9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/FR96X2581134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34584af6034afee73c270c28364daf260d35533b56b09f752bae9f0b605df46c. 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/RUA1D2593933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2070995e6ce2210fede2623874a36636e2a43561a53c0684e2dc4c62780e23. 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/RUAGT2510791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dcccf1005f5385c26e2c6c19eaef03e74405b5cbf0f1e5cba2231259a4b0ec. 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/RUAGT2520372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92b4360f5e398621bb19644d57b4efb07e70a35c2f6dced9454f17e3f69ede0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RUAGT2527094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8f714de1c698113b280fafa4243f1df4c931a186f61cb6dd845d66137f054d. 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/RUAGT2569301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf864457806c63c2139051989c8760c42e63daf85f1efa2711056e8cc5d0ae624. 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/RUAGT2578790.