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 0x916a35e9e696cd788e938f6e01a3751ff61d09a2087192c1f38cad0df3d79a83. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff7a95b2-0899-41b1-ab5d-ffe97881956e.json and https://artists.proofprofile.net/proofs/artist/ff7a95b2-0899-41b1-ab5d-ffe97881956e.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 0xfbac042790215896746ee9ac7885c1d8862e7dec1f2898a4c0ebcc032ff25672. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/USX9P1335735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9da7f7fa70086e400ae7d72ecc87bd0485bc001de7e1bf2bda9170dfad57a83. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:13:21Z), 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/USX9P1335737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37005e5455245864ebd344e9f094ae527aed46c7b638ec53a808b2a7e1924da3. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/USX9P1335747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac223eb546f8dcc698260d8bb3602b11d648db73aad6c977ef750c2b0b052dd. 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/SKA831307501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b0f630d7360e187fc47e180974e2618d4473465cc8061b1b3b24599b32c01. 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/SKA831307503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb993410efc0a3fdf43823ddced035c7d7f98304f3a78c949ed0466108dd7564f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SKA831306801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6509dcf5f355374cd1029d6671ebb48d21f70a4c479b9bc5765fd888559b1e. 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/SKA831307508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce13b396885b7a4dc50994187a1df1d78d476ea9e8e519ae54471718a970b1. 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/SKE011608902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f1035ee5471c7072a21b8da97666a8b923114a1396068227122588dc8eabe. 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/SKE011608904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ec3caf1ad37f30f219e26025799dd44d904f9f206928a86183ef1e4822725. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SKE011608905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0b7358bfc1497c4c141c21f9fd32b38b584e2c80530fa940b2249ea5e25d6. 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/SKA831610201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e4ae3aaf7478ea1d63f3c2cf97a76a7b252c33dd13959ab69bf09a14465fa. 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/SKE011608907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbfe1de16121b6c14872ee56ac7aeeb7866716e529bb09d12a5f76d3a7d13ca. 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/SKE011608908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4633672f63ee739ec7b575e06eeaed65618dfb569029c6745452dc50984bb43. 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/SKE011810304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ebce2640a3001c81958f5e454daadd999ce82a8988328c3e0a8663d916fbc2. 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/SKE011810308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5907b7c694da125800ac9353e4c6e50d028e800a847c7fd873bbd90ccac5771. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:46Z), 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/SKE011810311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40153b062d075bb63da209bbd7a302c3a39dd94762964388dfe1e49d292d4a94. 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/SKE011810314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873324b3ab96e380a2071f2f2a1da725151b52b8c43d350cd4d007c2bf14b8c5. 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/SKE011810315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d161863bc671944d25b12df8029cdec93ef8b33875c2724ac9d1e177d0aac. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/SKE011810316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bce4d927d35ca0f101d706d708939da5ab18056af9a200921b1aa2e1470a959. 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/SKE011810317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc9d996eef2706674709f85541cdf9b65935a9d12e1722a2cf0fa1f60da68a. 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/SKE011810318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539bfa9c6e7205a5977cef39419dbb5af8689187f1d265bc55688ab2d05fc3a4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:32Z), 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/SKE011810319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd5fb8685e0964ca987058109b3fefc34da3c8fd8cbdf8a4271ab8d8b34512f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SKE011810320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3da63b75d45f86648c9701899eeef967cbc6e8fe31fc69c819a60c0793f6daa. 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/SKE012012004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2185a8be0f491f2bfd7df88e8c728286256963dc22f2462aa405f2f52ca7ee. 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/SKE012012006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1df18defee920186814f441f6fffc86bb4f1a9daebdcea75dcb547534439c31. 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/SKE012012010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8460667b32a11e2a7d05133a037950d0a9f5c646db286eecaab8dc6ed71435fb. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:22Z), 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/SKE012012011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51db6aa5a0a10987c30c9f70ff927459f5f140e1f540fee40cdb502179c0990. 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/SKE012315103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843311b988800e5fdd3f9e8f83b95d44ea8a989b7721d5324fae3d5dfe32a910. 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/SKE012415105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc66a258677c67219dcc6bbeb6b36b6ec44b506039f0fbc2d91074424b95e1b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SKE012415112.