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 0x643a92395e52d3e436056310147f3c3500e57bcca5365980d4f9778fbaee5cb5. 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/ca63e3c1-d47d-4a18-beae-895c79d691b9.json and https://artists.proofprofile.net/proofs/artist/ca63e3c1-d47d-4a18-beae-895c79d691b9.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 0xe9eb60e1fb12572cb7edfbb4af31da4b4c2f70a91076a089595ef859e7eb43ad. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:55:40Z), 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/USA2P2321672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa482dbe744e3aee2b54c6025f256622aa9b172f58766b1eb5bf4a01b10e1ed44. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2P2321673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb125de38f6b3a2dad42e05cfb556ba868ebc890c0e414d960073ca72d27890. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USA2P2321685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd323e76ca5fd5b3a16bd15385d4366fd67d31f46de70219f18e308eabf0c27. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USA2P2321654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafafda913c300a4e3ac67e348dd6c62491b178b77e6b8fc8ff2f1b70de2de44. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USA2P2321667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85013b1a716676f4863841ba8697394010b8f94e982825e2597b07e530026a55. 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/USA2P2321677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0877b364b54d95b7f7861da85687f8075587025456a4f98c349fbd1037500bb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USA2P2321680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53215ada6986b8e6e3a4a6bb713096899652e58d731dfc0a4109ece17d3bb087. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USA2P2321688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509ad2acdbacd359cc6ca9b41733377d273df72cc28a7ddfe5754ed94c4c5ba0. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:33Z), 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/USA2P2321661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e70def6fb2bd7945fb96a1c59f8461705219316e967bc8472ac056e62de1a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USA2P2321665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865ea0c9b2f826947afbc8c680354c54d836f35e339bec2ab8ebe092d7cb1c7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USA2P2321686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e97264e293000153babf19333b46b770b7f268523537a0ee13f7a4904e98ee2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:49:00Z), 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/USA2P2321678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7a1b2f35c2dafe9ef7410b841839e532105030e9e9007436a77c136b4fbee. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USA2P2321666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16e14858ecf3ac1c31749e6d3362e1e9fc50fa13c8134e60f592df5401a3a6c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:02:11Z), 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/USA2P2321676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c5bf4c43fda1103bf2acee18fded4a493416cdd7e41f03e720b0c089bc5fd. 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/USA2P2321684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b7a449c4c3b4426cd13399d62e6f5a183ce8fe9d93932940699637f024b2d4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:49Z), 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/USA2P2321668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f1ab638185ec2726d1e6422b76b3cbe39cc30fe59d9350822bbdcd6468ca3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:02Z), 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/USA2P2321675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff12cdb49f67b0ea1dc1818c844414bd26ca0563321fd9e1ce82cc1456ed393. 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/USA2P2321669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b2629692e2e00dfa181efb7c75b1764307079ae534a89ad287028231542e1. 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/USA2P2321671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d96b19d01cc23849bf8c8e8b0b480cf14421a3e5c49fbea103907afcdc11db. 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/USA2P2321679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2891c4c7e55f40a22ebc39b9d020930fb64f48f619019f2f814b5e27cd5f398. 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/USA2P2321683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6913314a1fa82578f8d66bf9324fd96ab105798fe925036e981cda4bb21a6e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USA2P2321662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbb65cb0886d82b8dfaa418cd771ce3bcb8c259ecfd3c25bee7dab72720544f. 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/USA2P2321674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447dd1c80904bba03a3ddfa13d0b2bf83ed55d3e266d5049076a2f791dbfbdd3. 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/USA2P2321655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1288a1a20f6a0b0d0204d0b81d769858925f94c0c7a0ce1001407a70b2b11448. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2321656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec330c197a7ee8b53df5ec341bf8dce56bddf08d82cbbbaf1f1f3f790f0d6a9. 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/USA2P2321660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba52875f31cd54b0153ce930fc03d87b621de843341c9dc177224df9f98524d9. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USA2P2321681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a05d75356526cfe2407fcf64be60c6ea6b02fcfa2b30912748324712ec1849. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:08:28Z), 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/USA2P2321663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b08fd6a2100d720dfa9b0e1fbf10805965f62f3592a3596d01b8319e6e9876b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USA2P2321664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fb86e8f91b6aed722a94d3d19721d5ace2c5bbe52cb5160a33bebf63095433. 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/USA2P2321682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b34a463eba76bf7caa9f901e64eda9fe113130937d3fe1e3b3f376f850a85f4. 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/USA2P2321687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df6f8a71a40b1907b959287d4280b438bf0cde2211a6f7b2973911dda6e4b4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2321670.