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 0xd3600197094b7cd8695bd621668d1d22ffea853ccf8415322d98ea044630c4b2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91fc7718-042c-4841-92ca-a9c42404875c.json and https://artists.proofprofile.net/proofs/artist/91fc7718-042c-4841-92ca-a9c42404875c.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 0x20d2653a190d6d975c965e7097c877486673cd177f6e7ca0e2b958d73339a136. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYSM12200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae4e2f8b95a1ec5f75ef62550e8f1e35b6462857a003762773238dbc080dbda. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/MYSM12200075.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc14af6f8e7c42d9e369499883a4e7fd8248ac7d979e598b1cdfa7fcb412f2a. 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/MYSM12200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2416419fafa2c61786fd1967efef4f107a2da11d6e6f004ab327f4469111a739. 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/MYSM12200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deeb4fe16a9fbc57f70a930455f9c84df027e6d0162b7d416825d54022f77d1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/MYSM12200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e86c89a12bf20f54ed6a966d9f15f01089aef24a043d435eb6155bdf0c3edd. 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/MYSM11000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eae4020c97241a8ee3c27f352f27e0f8d893ee8b8fc65ff5b5b339b1c08c1c9. 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/MYBM19900165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da88f73965c1e6ca30c107b7471087b5f9d3405e7a7e80aadf03d09d71ed25f. 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/MYBM19900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6568d84549bd14fc34dac6a4c7851a9c1e6261c6f9d9478fecbc190423b2670e. 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/MYBM19900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4639e66cec66b2ce35f2b7261b94d05882e8b6c97504d61476edab93f528ab. 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/MYBM19900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2415b211074242c493d9b643f064e4733a3710742f90e077e8d5e7d3123157. 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/MYSM19610041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b89d133a8f88a046af0178f6a24dc1804c6ea50c10bbb3242df6bfc4af2af5. 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/MYSM19810058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfdcf2efa28c1a6daca793ab5a99c56563e167a246176db45a55122d1b2c520. 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/MYBM19900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcead9dc4e33fc55f108f4c0e330cbacdd642208571f7310c8c36aca2fb18eb. 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/MYSM10700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198c949d4127d9578a701aa284edd993bc0b885e7078b4d7c1d6abf8001faad6. 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/MYSM19610021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431ebf1156803f5f886ca10c6489a48a232dc42ca9269f1ac89814da29f8e39. 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/MYBM10200775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3491c176c14fbb6a089af1e7d10c3b2dd993361f3732a2052f42ca2042347682. 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/MYSM19810059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf4ea28ddf571e38a62f20d3853d5917fc4ecaecbbd648d0dd5532dd9913c56. 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/MYSM19810067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e00601dcc955e80649cceeee5f3ccd37160cf6c4938057b459a62317887b871. 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/MYSM19610024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c133d513ae7e6d6d522484bf8f160f0511b7f1d3b7b6c8ab2ce3e17aaf0b23c. 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/MYSM19810063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b0e29212b13fac80327b80b8e9ac925962db7e850aa6c862b5ee51eb3d27e. 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/MYSM19610022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949c1de2646869bdde0e61a2a2183356e86399efeebb89126b42c56876c50f0. 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/MYSN10700243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2582f3316102c7607ec906357ea220ccde22f2f641f4e1bdfc849d3fe979eecf. 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/MYBM10200774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f76219c4d2120df20c30cb668dab824d6379765e2b4953812fd33303cae96. 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/MYBM19900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591b809906f1c65ee9c6c0d2787189c8ff68b40b133d7137bc72a7d3b36f7b8. 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/MYSM19610025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf7f87e40022eb4079491bdf32172b24c1325578a0f24e7b24e59b0517601fb. 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/MYBM19900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff20f4dc3aa3e0e53f91859bb69d72001682140dd568edf9667d620427963402. 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/MYBM19900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93803300c649eb217d27a2cae971adeb7734d1b9ee5ba50a58a857d01d928a46. 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/MYSM19810057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296a181c08399daa70fe5ce70eef56400c985959ef2c00253e787086d3bb1a4f. 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/MYBM10200776.