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 0x2d762c755ded293864638bc6b383981340e4fca7b6154b7ccb23573e74cb8cb6. 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/a9987737-62fb-44e5-9589-f1def36c9557.json and https://artists.proofprofile.net/proofs/artist/a9987737-62fb-44e5-9589-f1def36c9557.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 0xb19b9be977a8ec9b4b0dcddf1be7a64d38fa07b3769ba52e06507f2c637a5d20. 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/SE6I32172549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaeca45675ff0f46d3fbd20709598d355b2d3e40be153eb0dd9fe3752b4dc58. 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/SE6I32172568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37529f8185b057e229e2203712a593e9a4ea66b4eb5794bef7993527266c254e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6I32172707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5428d63818605b26387339b8b6ed92dc86c3ea120e869ac6f117375023ad75. 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/SE6I32172595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c06ed4b4ebec710a400190ccf8974534958f21c507e10444c47bdac7b8a207. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SE6I32172599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928717f4a8406a119680e91885951ab835b10883bc25209a5fef01efb17de9d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6I32172593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb18f401588ecfcadaadfef03cf6e338d4f715a5a8abc31fa8aa8783face6bc5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:54Z), 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/GBKPL2283075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7b7282d24c43ca297ef2e5395f2cc233788a8e40b8193ece140167da67a30a. 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/GBKPL2286317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a1591f3ee7f58c82ef59783d85141e60ea8afcfe9f0618e04c42cd955348fc. 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/GBKPL2285061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04df05e59c8f71a71066e9dfb4af945a68768c335e18d9c907534ac8779c99dc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKPL2289822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bee0676dc07de3598e70c113fa777bdac610b70754d5cd14e0be00652290e78. 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/GBWUL2280051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d3877790bac026ae42d2a493e6d717e164a0a983deb64cc488a89462ae1ee2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:56Z), 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/GBWUL2280054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541270d4e35b0da2c2e6f9e2b44414867690e9c0433a538b28d048bb5a83fcec. 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/GBWUL2280056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7b1ad9c49f7077bd02cb7fae9bfbad397cd2cea6be24a7757dec0ce31e9fed. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:47Z), 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/GBWUL2280058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1094f849947ebd773648d94f3577da24e1ad61a8e13467110b5418f629166b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBWUL2280062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecbbe5e8777347db40ab02def40568bdac5d6b16c1c46f33db4e5662d25674e. 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/GBWUL2280065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2bb92f0ca12349451c442da68186d761a3c40706d02c749cf90c207bd447b. 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/GBWUL2280066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb793884e2da36dc6f81ca578f7a84af4bbace543bc6124a66ec73323bd31d6e0. 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/GBWUL2280067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2315a436c3b9f5a0dca154cb47588e93d75016494ba73a3e3af6af40afa16bd. 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/GBWUL2350124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d380f482181f9abba1f3623379e42543e9701a0094330b1371bbb3c803fc42. 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/GBWUL2350126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1745b223976fba01037e61ecee060b9a5cb800fe0806208c09c870ff1f3bfef. 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/GBWUL2350130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee805dd5a0a731a52e3b4e855968ee72e82cc9a9232fa89a7d9511e0f0941963. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:50Z), 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/GBWUL2350131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e5aa40f3e969bad5cf8155f03ff1ea81f84ea7651c5b42bcfeb202d8481807. 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/GBWUL2350132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3098a65090031b0f4302db6cb5db2b2b3b2e4b41297302f5adfc2fbfe22a0f8d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBWUL2350133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6abdad63c5b4dd888e25300423a7ddbf93f688f484de9aaf3e65c042a636d06. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZTAY2306926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb332895d1a2f28c974d6b9530f53e38d7ebe9e225dc2e4c1f0e3cd051d645c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFE2350593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9ce9226389d316dbaf22c381065ee74dd0b4167e34190b1cc9b85cb0588e70. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZWFF2395028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85677930b79a3342f8bbef6e1c86b0f4fcff237317a84eb1b5a30b064d4227eb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZWFK2390731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebec9f07ee701d9922a109a074bc68d03e71ddcc7d8e1eb4f1ae11e53499d861. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZWFK2390732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cedd5a1e9810810dabf899ed45adca052acc250356f7e97ffeca98a9f8d67e. 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/QZWFK2390734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601569f21bff6983307b13d8d8939e903c69314bb8bacae29e1ac4f834b344c6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYX2439252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefc9e9465516e1323f5c32431d258eb69b01d16d54cb56c8a70bebc9d1975b3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZFYY2487769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f28d322c8ec2e8a02cfe6c06a42003a9e7450a6f5b9942db7da518cf5ed80ba. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:35Z), 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/QZFZ42445012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed6143fd3b5a3c98ee8a3853bd567fcb5d9f9d2e6984cfb8dbe078509652a37. 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/NLRD52400722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9e4770396d2fcd1ce03525122b554ea11a74000412dbc5f3b36616b39e64c0. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/NLRD52400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ba7b3d28c94033c9dba64eba137af90db1b858e1b62b4c7ed717a8f513674. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NLRD52400961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd2725b819750e29030f980de041743f95b59ce262c3f253b04ce66174ac39. 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/NLRD52401099.