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 0x4aff00243a662401e1f5272e2dea86b57a4450c9e568570601c59a1579f9ccaf. 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/2a6453fe-600f-4e96-a713-4f8d38e66719.json and https://artists.proofprofile.net/proofs/artist/2a6453fe-600f-4e96-a713-4f8d38e66719.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 0xb63abd606eb81b49c99edb20cd96da3957dceadf8ef64faffe37cae147d2a9ef. 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/GBKQU2538149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbac590dbe1ea1d3f8900ae1eeba18fec3d1f404c2d99aba8e48a598afe42ee. 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/BCVO92500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae93849e38055a1573dfda4130d49e5c316c9c66145b283f46365f71ff1e0ca. 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/GBKQU2443778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b24dca73fabcfc49ddb726680627e6423ef2b01924ced4fd53df464a63e583. 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/GBKQU2428205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f295b1aeb363b7dd2e77600a7af521e5fa90dae4ff6459c4f2ee75cf4c1dd8. 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/BCVO92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881fa74135c58b5da26c1fe17f07894e154779ac3a078d4ad067bbcdbb143c7b. 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/GBLV62311153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c26dff04881946a8ac2b78109fe763bbd1a23c8dd1b4788e7a0a548c7ee9f. 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/BCVO92300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387934456e90370edfcbb1e0f50ccf121a9cbdf58782f75138656bd9ff4b916. 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/GBKQU2333338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c466168777ab74181b0c3aca0e8c997395b5ce676b942f634c7bd70b912a789. 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/GBKQU2308379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b400878dc045b905974d27260b563d45e78b8deff21b835bb4eb5b8f4ec0eb4. 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/GBKQU2292803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160989b21069783bf6a8ecad70aae357e7d8433895adb61133b835b85af10836. 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/GBKQU2280758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd09f4fc865266298f5d105974ed6e21fcfc4897be8f733ff3f3096b3ce3d3. 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/GBLV62113151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde581cf3529d84a3acf235b977d27407a076f97bd26b7e8f96971265c94b6579. 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/GBKQU2108012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312890a95848462401b381e0f0338f4a44d8b4ce704d037754d0ea866cb52ee. 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/CACWV1922771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae4a9dd1ef061ca67986fcb6a432582eb85a32cdb4417b14f2d5c7f598d61f0. 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/GBKQU2058852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d1d07931957be6a3924569b43622736a526ed2e20f1d571a56a01b9ef6145. 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/GBKQU2011250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf35a9caf40aec9c263147759aeacbddb5b38f70f4ef4f81eaab3fc37d43f8c. 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/GBKQU1786230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6869eb1f874b693eb9a660cd3434e080a1e3b00d50f5cef993acdd93e1eab1e. 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/USQY51767817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae52f8c1967eb53f008d5ded42e4142a134895246961afbe6716bad813b28b. 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/USQY51750369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51f1c2c4ccb9d80d154d7e20240120223a83b4f2ba7af31ba72e49d90e2ce3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCVO92400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad77c5664ef576331336b73c06c032e96b2a3e4b95b9efc3247d697f8c67d24a. 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/BCVO92400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1ec87c3ff7b55ac3d88a4b127eaad99dedcb59469aa754619e88ac184c12c4. 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/BCVO92300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f295b1aeb363b7dd2e77600a7af521e5fa90dae4ff6459c4f2ee75cf4c1dd8. 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/BCVO92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbbf01e1982fbe8b176ddee3e856e7aab37003396d7a8aef73c560ba7b3e03f. 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/BCVO92400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8e9021b5d0f4e54d25371076b4b8653fd1870e2279771d0398cc39fd03b8cb. 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/BCVO92300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2a63da4271751e1d207be1c6881ce43661f6a7d432aa093a84f5775b392416. 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/GBKQU2002697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f86963513829d6fb38536b195456f8d9af48248b5a277cfec64be2cdcf6e06. 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/GBLV62114817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2280632cd6d24ccab6299303b6b7de959914df9fb4f024327b55f60449929. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLV62114818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83b11ce5c8a65eed130988723c5078da65d1ec154094bf38ac98471d24d926b. 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/GBKQU2278955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc039a534357c2f2e16f6125ea3da0f2ab4ed0bc1d5cc3bdcb5114dc3665ffc. 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/GBKQU2278956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc6c69f834d7734ce12be620950f379ec2daaad65aa8bb62b23b349c60c880. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2278959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3bcc839b21c8d9c04cc0773a6e92ce4874e63cf900a0b7c1d4836f11a7c110. 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/USA2P2410868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d1d07931957be6a3924569b43622736a526ed2e20f1d571a56a01b9ef6145. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2011250.