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 0x037137c99927105fa9db0e8eeb26014211272908a0cddf1e7dbb679a6215637a. 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/9a124809-0a1d-4380-9ec1-59435fb539cc.json and https://artists.proofprofile.net/proofs/artist/9a124809-0a1d-4380-9ec1-59435fb539cc.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 0x1a49da0af1b37fb884a9a652112c40bc06c4f22b1edaca77fd12244ba67fa743. 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/FRX872033221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00fa802c549fd00cf2f6dc9b32e460c19d47ac3534a8db08387b08298cb6091. 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/AEA141756126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c4ef192856b45167480192046334208340c13908ea6f31f4f206cb196f614. 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/FRX762093428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ee921b5fdea91c5d2de671b9908468dc5d1574bf8984e28c384bf814a3cdfc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA141955834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d352c133c574580b8f3f0fd6d79eb7721596164aca383b897c8b908d73abdba. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AEA141955831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518850a934ab7edb233ed25b41acdad1813f7cc3f07e824713f3a47ba7971746. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX872033233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3be65ce2ecf8ac3ff47c427a7e46beb9caa1bfef24faf9b8a6f99a703e2908. 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/ESA012006102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd285da756a978f104ccd881afa04a5bf62aaeb40d9ae02cd1badaf6199567f3. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:11Z), 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/ESA012006103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ede2005d6ffa9ae345bde6ea67113552d56bbb9002f572a4be6b1886e88ca. 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/ESA012006105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf29c9b32771f4b55de9bc5c73451539972d812ecaa3c6fe46b36d43aefa0a0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ESA012006106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04db01709a3cd3dea633012c8b3fbf4babeaf7baf7af6ff06343898278b359fb. 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/ESA012006110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7705a35f47bbb89bfea33a85968aa29b39576e97b7d9228f0d33b6b554cb8. 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/ESA012006112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ab0e2d8c6e05a312753287dd642393dc984c9eff7e306bee2375962fae81b1. 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/ESA012006115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9569c9ff5b52524bb4d54c55d2f90067b431185443bec6e15095f33706e80. 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/ESA012006116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c60c9bb0ec821c3fec239b2392d89fd5f855c049bc1eaef22427ea37d400d0. 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/ESA012006117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc4fe448f19f2228a6ddd659dc71fbdbf616cc4f6a37f82cd264f65edafcb6. 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/QZK6J2050224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c750f23a05f98ece0d4e6e3eff6ab5cdce7a0af323e626917396cb8fb4445e2. 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/QZK6J2092696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11521d1ac1f622330f71aea35f67b5e53c162db864f29adf4b23f56bd06ffcc0. 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/QZK6G2064417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1547fa038f52297db4ee0d1a39574b998e5443ca049c97466c86b7716c4d2ad. 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/QZK6F2013344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f3e6c3765ddd4206f25e31a5d251f85ec5314dbcaf444f9929f7544fd033b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:33Z), 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/QZMEM2040699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f9d4eb1a5ec34bbe4008090f9e7b699b0ca4bb5ea1e19f7b0210556de401cb. 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/QZMEP2012406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92a0fd26754dbd9d2889769cfbf1e5c2230ae59558261012dde85a94f53ee07. 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/AEA142114238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ce6dffb5425151f05abafa08fcb62777dd3ae426764c7ef0a5606689cfdb0b. 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/AEA142114231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7804896b7c61e1ee2d5171ec14c864182e2d633ea54d3174f0d9ac8d80f949a7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZGWX2090707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec5115790e0dc7a46716ee1b379241e770e093a820ff6008ddcf445c607101c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZGWX2090709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2afb6785a54f6411f027d57abc2a0dd2cbe49c43dc7fcdd28e54810ee18cc7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFZ72135989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1da1aafc874f5fd10f9e424dda976fa9af5caada75ae2fcd19cbb9c9991d349. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6L2189943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84ea9ce0f2a9c2227624f9e9cf9e7a26ce85cc5ffbf161dd6d981faa5d558f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWY2174196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e8219610667cdd51a26419836ef8ed42baea9dbf554daa3f88d7e44e15a841. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE62M2122037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5641a3bb5c447698c2744a6df440a11a7d87b801194fc8ebadb5bb6085393ed5. 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/QZFYY2265534.