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 0xa8831ca446916aa74794f70071909b040663bc7beff377b71ee9da45f81da3dd. 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/78af18a1-19f8-4834-bfff-e92b0ce742ca.json and https://artists.proofprofile.net/proofs/artist/78af18a1-19f8-4834-bfff-e92b0ce742ca.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 0xfc2a876fb72f7d50b1ce7a94398de3e05391dcd859d32b53025d64f543640587. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c24ac52b43e1f717d0f3df281f350fbc8cd20ca0ce77d439b795f3d89c0596. 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/FRZ042400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb385542a9446fc73455e090eec476a859740ee0a5f2ef949f162d05f4991abed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db87c1a05687142381d8dceca87959e509cb988f6db50a879476972ef21be6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZ042400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebcc2b16fd55c659f606e7b8ac2aaefd21e55057e8c28f1af949dc0c01a0a79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZ042400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98394ce78f8ab044bbd2d590c6c4ce75c6c203b44322bba439c96849fa1aa4c2. 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/FRZ042400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d26109af198e71e5e172d7888a761da58a2a8f34c99bad85d82c27834e0f72. 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/FRZ042400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67874e948462948b51d1a921f1e9ec8ca91d52ea90b9c5630804edfdbf102dfd. 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/FRZ042400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86318925c15bfb0a3964b9e86f49e7ed0fdb567702b113aeda7dd90e5cb4f17. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5522d92085391c05246c680fb6e8e712ce8d5a935524a2b28fa5f90dea94f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e84433a34e4cc1226560c44b029a26f258718b09bdd097bfe5c29cec155230. 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/FRZ042400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df07d30c39dc36f4a35e4a988986dfd981e49fc7e4c9a74dc0376da7d5b667. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRZ042200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c36fe32121be43b89d57bd165dd27fa2699409552cd892455259fdbabcac259. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042100900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e5c79c7c7e07ea26ac167f79125491e7fac1835d3c52b78d50555f94281f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc68d4a119edd245114064bf1ac1df0812712db0a8b0e5f6dd302e9c06758a3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ042200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb594dac3645f7c6c407c6cbde7762b630286bafa04b4d0e7c02dff55b14223ab. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRZ042200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef83403ea5ca25d057608c5ffe275421770ccf7c6a01f8a58abc66ad1f5823. 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/FRZ042200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47115110b4d0db24df47ef12d17e1ffe0918b1425dd5099853b2a411e2e2fd1d. 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/FRZ042200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48088a143c84b0eef9e10aac776c1df5fdc9e99df59757d463f1443f6c683821. 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/FRZ042200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5522d92085391c05246c680fb6e8e712ce8d5a935524a2b28fa5f90dea94f3. 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/FRZ042400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67874e948462948b51d1a921f1e9ec8ca91d52ea90b9c5630804edfdbf102dfd. 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/FRZ042400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c24ac52b43e1f717d0f3df281f350fbc8cd20ca0ce77d439b795f3d89c0596. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a1902c36171403939b32137f117006050f52294a17a63f62535b00fd9a912. 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/FRIDO2314317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0b80bda4a2ad31e687ac4a0dc4215857689c740a079f01553cfcbc064f3b39. 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/FRZ042300755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfd4935fec44ec4d8a88e4d187ce89e9dfe57638c6e0f89e9e3e7e775169558. 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/FRZ042300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e06e6618eb93504fb36fdf80eeefdd4898e8e6d12800e7ef2df524da20d6aa4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dcbedef7bbb9f670b9eea0173057e9995f9c7cb2dc4451836dcd5dcc0e6b7e. 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/FRZ042201177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ddcbdf703bceec190b864ce9fdcdb941de1bc1cd788c441e341bea481aaca2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRZ042201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7746af6f24e33de58eb488b62a72c71eb2a86cfef226078585206f9131f6c785. 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/USAT22102083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe632ec9fe204b1bbaeed61dd6b64c163361f55c72d29ddc041615553344a5cc4. 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/FRZ042100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bff742980f8c238e12f3f1d66fc81a0d5561cc72ce8bc98f65ae08355be491. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ042001243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488458ba192fa64e6cffeb77d1d5c12768ba3b56be7f55d1a084283c33deb2ac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ042001214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e416b9b1c5e6b22f40ca4d1dbecff5011c49ec02fe552d4c6d5818bd757dc38. 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/FRZ042001228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66e7d1b634978be8acb500c9a42d2ec11a1d7b2599e60d3a37fec19b1dbdaa8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZ042001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff69e8004babfdf500badb6e93323357ed59c4abfa746aef4032c9f1e9bc80. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a88a61d7d097b28c66ffbe276580c7cf0f50dacba6405716380164bbc08b7bd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRZ042001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241ff5d4609faa60d90cc7b21784d48426355d82c81707a69b2b9b295c69cb9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042001022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8ed4de1f28438a28755f324bff816fb1451f4464c3f1f880e7d54c4aecd561. 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/FRZ042000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e596d47f7a5af3c86e5f43481251b73084be22f663f917cead06292eac9b51e. 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/FRZ042000668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170aaee9242e4f7e5246236f242e2ed831c70220afd6ed5c90b8436252199a38. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042000669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c44676b7456e0d6f860805d5c85cc2c1199b9aba35a1f795e6823c2e97c274. 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/FRZ042000670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb1d7af9e117cc8fc01640be650ee73c88f7fdeba6d27a3ceaaaa75f955ba44. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRQ852200120.