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 0x44e24472966e1641e2d44e1f47531268f211c425d0365c678bb9c6e8a18ffb3c. 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/047dbbfc-122a-4ebc-abed-8b8f33ed2374.json and https://artists.proofprofile.net/proofs/artist/047dbbfc-122a-4ebc-abed-8b8f33ed2374.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 0x820590d6389cc6723961e17c877a3d697a94d5f734d77a0e4fe62517398d754b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCTVC2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628fc5d34e84d17f5f406d76600c9f6eededfd90b278221b3b276c5add7df803. 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/QZGLS2393115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc0955df09dbb41f2db9134a847c9650962bd9fc704641b622255a23ac4e1d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BCTVC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c7a2c930d3fbd8222d245c142106bf7316771f486ebb9e7bc54f82a2e37ad9. 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/BCTVC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecca1a9683a5ba7a37b0f4efaf1987ada11ccef6a89b31497df3b4af9aa9918. 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/BC9KN2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4f5bc717d1337cf36ce0dd5297cd7b8eff543c3cc8101dff881f080ddb89a6. 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/BCTVC2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0606820ada587d1ad758d6bfb0c77d3c14585ab2e91e12306993b8e8bb7126. 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/BCTVC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11abb6d531a501b85c160d4e86315ec08a761bc7c359f311b8f36eb9c56fcb42. 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/BCTVC2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f00259f237e891bb759fb5a9d75a3c367605f0babf90a8ede701306f0c329. 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/BCTVC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820590d6389cc6723961e17c877a3d697a94d5f734d77a0e4fe62517398d754b. 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/BCTVC2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b482da82c84bb8ce4000b49de7947dbf1483daf0a5af56bc113dd7e738322. 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/BCTVC2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ed5db38c013758bd93a84c148c270038edeebe92803534ef4e56a519b82f9. 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/BXBGP2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362c62104703066b9650b877af8667542a7f4d0894f5aae995a728cd981c516. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BCTVC2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d77138d991c892e0322fc801bb11d13340d80b0daf47dd0a755d753ec4a352c. 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/BCTVC2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafffea4270a3e3b41034a5779ceb5c6f588ba5f0e9bc29dce57ff2324fc4edbd. 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/BCTVC2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0c0ca9a523be5b8ea46ffcd8bb117e5b12751cb3c30f6e9f8dec776cd27e00. 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/BCTVC2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0c0ca9a523be5b8ea46ffcd8bb117e5b12751cb3c30f6e9f8dec776cd27e00. 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/BCTVC2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d77138d991c892e0322fc801bb11d13340d80b0daf47dd0a755d753ec4a352c. 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/BCTVC2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362c62104703066b9650b877af8667542a7f4d0894f5aae995a728cd981c516. 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/BCTVC2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf117c1b9b4e566d43ec7eefb2bc57df6924a3b50371aa03fe4678b2b87401a0. 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/BXBGP2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43080ef4b27f93ff666a595f0ce89f3d9c02e237cc01dfca3d358e2c193ad4. 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/BXBGP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0606820ada587d1ad758d6bfb0c77d3c14585ab2e91e12306993b8e8bb7126. 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/BCTVC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f00259f237e891bb759fb5a9d75a3c367605f0babf90a8ede701306f0c329. 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/BCTVC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8d12247e0b1ff8d909e51a1c583b2fade67d3a9d9ffa20e2160970dd2ceee. 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/QZW9M2291745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5e30e81624977f82d746959e4faf10b22471ff77b30ffefba27f0c167d78a3. 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/BC9KN2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df791c6b7513f39be96fb98013a5ba556d788af22beae3d099590225270af9f. 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/BXBGP2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276091ea4d368fd7a7e2eca958cff94490098327c57444348ef512743614a3da. 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/BXGEH1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fd1a8eb500e4dece96071348c41c800006fd81b5e8ce74354550246cda7923. 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/BRRGE2200988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43080ef4b27f93ff666a595f0ce89f3d9c02e237cc01dfca3d358e2c193ad4. 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/BXBGP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf117c1b9b4e566d43ec7eefb2bc57df6924a3b50371aa03fe4678b2b87401a0. 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/BXBGP2400025.