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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f232c4a96d4b9d736a9172ac7530211e2352a872888540ba487f48172c55a1. 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/446fa8f0-1891-403f-a3b9-458a82366038.json and https://artists.proofprofile.net/proofs/artist/446fa8f0-1891-403f-a3b9-458a82366038.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda82c6a905783d45c378f3054fc135c0631b17139e89983c85faba8dce12afe. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBLV61807763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe34b7f3d81755e688b6c1b9af758e0a89261fad998a3e659ee43b181451b926. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBLV61807764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df267b049eff4ec848934af3c3ad6c61336217a3e1f5d4d2462fb6cda607ec2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEGA22003226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0747cf7b80857a83d1878e9b2b46239b8058c8741fbec3c6d0a69bf3baa8be75. 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/DEGA22103473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924d7838cf9be3244af121498af1bb5ff2dae9e8ee79c4f99ab5421542d4147. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEGA22203632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8df17051c2de63e3b472b5dc328c417ccb86128cca5dea8285f5ef84cf0c2d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USA2P2207264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68035215e38dfc60a8e3c6eea19ce0174e350e84294040486fd2a274705025d. 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/CH7812235952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0014dc58e8a68bb7710bf2065c206025cf04374c89f6a7aa6ee6c12996473fd. 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/DEGA22303803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3db6a8e22d84d702a0f81b9afbb4d3f035d4355416a6df76d22fc96f0eaa474. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEGA22303827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4347e130a3de3bb7f9a78e74268ba16352ee85a5ded10fffe2eaf43daf29a0. 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/DEGA22303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeca0f2e9f9d35591a20f94d74cc569074f7bac50dcddc3179f252d1ca56ef6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEGA22303887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27634bc767b1846a25fdc398b059b6537542274920b0db303e076352b44725bb. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEGA22303984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a668c1891ea3caf46a4637d49aec50c2938ecb6239164dcc5d3219c748f9c5. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/CH7812362470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01bb5774a4e1181db403047d3db5369d15afa34e63cca6446819147ea994ce. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEGA22404060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e69abd3ba5032292b54f1b03d488827cf700087f83ff2bfc09e35c02afaf8bf. 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/CH7812403684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d658594634e84f5c8124bec11244adeb4daee3a77fb46bfaa8d80b737cf08d. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEGA22404131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7807255338ea9f81186307a61d031e8dd1f05fae8fbf7c5fec488e9daf39d1cd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEGA22404130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed741508fd72076b483b35e83944e0593e8f8d4668b320104ba604e08439c6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEGA22404229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d5300a1d7518858d6151178eab96e04f5748b7e7639cb7c52937b9180a5c79. 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/DEGA22404236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc2e7509c33a2843fec8505c4218bbfa0e8e6abd25a0deaf6741ea1d5bab0a0. 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/DEGA22404238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac48898a90c8e4f3d7f41f30a719e535802aa834cba297da3a1e29a15cc404c4. 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/DEGA22404239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fa3f89d50d598e1455627d90424739bcc90c9c5e5f7dadfa11adfb6bd8276b. 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/DEGA22404240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4972b7a792c0719d58593ecedbb442f6cf215eac5261b5bbde579cff0d2d28f4. 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/DEGA22404242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b19fbd6efd872a047ecb3dfb8578c77066fa200157e28f1c4db3cb78e5ea30. 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/DEGA22404244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9cd06c5f8f108f250c7b8e45ca0227278342faac4d31fe279f1c9ca97a619f. 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/DEGA22404245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c2154b4710146a53d85d25560ee4cc8a81a9d48a79d520700909a49549dae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEGA22404295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1af82b2a81d148c739c6e9ecf48abe7389c0c3ab3a8969f120b7485e178ceda. 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/DEGA22404298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef68d6810bf7cb452f007688fc3e8f216c61ee111d23d9a4518cb78be26d0954. 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/DEGA22404299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20396e4443dab5a01748f19fed5525b828c6b486a451db07ae0261b1766bb22b. 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/DEGA22404300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f4f76aa81457d613677d6713b33380e2ac6f4bf2127ad7c22eb711a10f8fff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEGA22404303.
Fall Apart (Mix Cut) (Cloud7, Ulf Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b46224da82e0445a93b3ceb9338876d9ba3c854f51164b90c59566122c5e583. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEGA22404305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeb28eca90b37576448311ba16cc6c0ddedc7b129b57c56a955fa1fd8ee06e5. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CH7812531606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783a1ed3b7c1f5fcf77a4aa5a89feec5f5be5a4562c9000cdc41a7786ad27653. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLRD52024121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da77a64762b2e64d314e146632b5c7107e1393f6b75efb4689e348413345962. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52080736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cea2d03f8052307edbdbbf3560f10ccd2c019efddf18a2e4f2ed5f9c8f782f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKC42000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55a216b551d6b99e8a01609367cee2a72ac86168f211b858842d2aa87b0173. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGA22003265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff8fb976779b8a2d48cd2851e13db633e6e9ecd64a3d3f940e20aae3c3b9c1d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEL712000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301366d403fb86c7928f07bf7d134cdcde9f16fd51d7c9754e46288621a6e2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKC42400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254641b3b136ac079feffcc734a7887480c061612f5878d2bd8da89a78edcb85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52303908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014cb027fd29f3d4a5506e80aa6f40ce152ed53de874939819de92bfce62989e. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/DEGA22003370.