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 0x962b70030b4279de7a89a84ee738180ff79856467e6d3e36ae3b7cdcc35120f5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9f60b47-c8a9-47d4-8098-4140e400ce3c.json and https://artists.proofprofile.net/proofs/artist/c9f60b47-c8a9-47d4-8098-4140e400ce3c.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 0x0fe0c0492c4af2c0ff7ceb6bb620b5f8bdf1afe52e44393f8e9e7e3cb939957b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UKXN22484741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211d87dde0d1533dcf7a245982c5aab1fac8e3abcb3016c1a03fadd812e92e5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:12Z), 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/UKXN22484742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3915127a17bb5c6dc2b381c8321960ecef1592e8abf49be78b923cb0d0e8a2f5. 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/UKXN22484743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d5970c136e7a3f9bc7432a1a83008fe8f8b843c2544c03179389c222cdd38b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/UKXN22484744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70705a36fdc5764692f8210aec8aef7ba95ce26507a86fb5ec1386c63e053f2e. 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/UKXN22484745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa8d1a6dce0e4e3fc4f2fa6953b40b24d9318fa65255d47286cbbdf714bed2c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22484746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fb4ca0c46a4f704ce4a7dc31789b1c53f01fdac0f2ef1aa7b02738a8bdb7b6. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/UKXN22484747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829d375e995f42df2bf66e57a7286ad224aecfdd31da3f805f348ebea86de1dd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKXN22484748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cba2efb1ba95eeecf4373f4f82bc3472e44f08519783029e8091efc4897d368. 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/GBMA22446771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe1cfcde48b37373b8de15ecc5eaf2e551f4b3bd0c7b43ac2dc1602f8a9d81. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMA22446772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94b28eb588539f394e0353847a676a182da88d5f043e488115f789d28204f01. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:37Z), 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/GBMA22446773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7088643bd213b8b507cf876d078c1b5da1e769a273b8863534e44e77450293cf. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:24:29Z), 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/GBMA22446774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe126d2bf7337d6020a7f8f76cb54f1d123e7561881c9b0c663849e6823a5883b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:37Z), 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/GBMA22446775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb330a4349f1b30a4e8619d7d97214fab95443a8e1fd2f37a3eae87b6856f48c5. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBMA22446776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd3305ef820a0b72b7c584692df5f603c9a650fc8547de97b3457e22329fba. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBMA22446777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a15bc386b5e237e2b95207da14c642ec5ca90d4e0afad9ced2ad98faec0aa07. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBMA22446778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa12c6508350aeee4e9848dc30c19a788706dd5a210935a4d9a2c6163a0736d. 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/GXF9Q2435946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97b20d275344b5df9e5081f6008f8e86fa8e2e26fd1b87142b11581858cf2da. 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/GXF9Q2435947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3378c3dd28a1885ca54a8b66c6101809405da3ff51462cb55eaa8b5ef6f9801. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GXF9Q2435948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9554b95e0e313c35be00c6fe6c3f6f9719e3cf8cb0d2ccaad92291aa7bfe0cbb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:40:57Z), 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/GXF9Q2435949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d41c14d76ee69bec2e302634adcc192b967212b94daa388ce928e0ed2f1b33. 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/GXF9Q2435950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696db3ddab65c9f48ca08f6c9155dfd44ca19c9bac2d9806fd4f4c1ef67d7e81. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GXF9Q2435951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc87a904a6acdcac9d941914fb5db7873b79cd2d237961a0cc55310ec2e1e20. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXF9Q2435952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479597cc82d2b234a4700764a9fb63de1c7d6ae4d8e37309c870e7931a0daf65. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:33:16Z), 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/GXF9Q2435953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52381b7187ab4fbb94149af37d343c3d3ce502830b367a5dabbcfd054b7c7ae1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22586549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f177a694101e7dcf90531246e2a50ab15fdeb6800c6687c44dc5eb070db4bc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/UKXN22586550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caeb37b2a16cdbd6057f8fb05383da3ff492bbbc6c99e97fbe4877775ffcb1c. 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/UKXN22586551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ac62dfa635708603042415dfb8b8d6485d8fc05cd93f5d4e3ede0dce44461d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKXN22586552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8010069a23dde3f02fa4d90b45996e36f6ed8d1389e171c073c8887399bd53. 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/UKXN22586553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd737f67d6511b72c61b52384c175b1d6d1717c538f20937d80fb13605d0a58b. 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/UKXN22586554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c614aa59c661120dd155cdbf43af187c6276385a1e00d37b41bc54cb5794e2. 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/UKXN22586555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8014d940f025a0f61e0dd0b4af6042e2376fca52b43436132ea0c4dc8282af2. 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/UKXN22586556.