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 0x3f49f3f7098a99da7afa82d298e664824848a8c05fc6b36ba473488bb9c0dfac. 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/759a5c26-a59d-4003-806c-fe405218029e.json and https://artists.proofprofile.net/proofs/artist/759a5c26-a59d-4003-806c-fe405218029e.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 0x32bdb5af249521c336696d8840192f908a6e88c148fd00d2e6816fdd269beabe. 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/FR9W12217246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93841c57d0b1eac98a992361f5451a0c3d32bda784f126bfd360faf6ab4d2cd8. 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/GBKPL1811342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ade5e97f0da466a0d6b4f183427b47c35129a700b236845a9401bca693217. 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/GBKPL1811339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8603763054ea31a1e018fdc973cb86b42e07e22df19db4e5ea2c4ac17b824. 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/GBKPL1811340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e858eec8255a4725799632f21e5bb7a7b5eb8c2a0fb7ef8465a5ce3774d3a. 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/GBKPL1811344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303c0154bb851e30a5dd471dddf2fd0bda9fcbcc03405a3392f184e426c53096. 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/GBKPL1811343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11556f081b38afa05ec209e394be7ea326ced89d3a31a7e380ef2b45b08539b6. 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/FR6P12101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9fa3df1dec1086870523782dd55f7741e17e565a997599d05071db0e62c65. 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/UKS362100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c45a84a2a6d42856c7607623812f6eca86d028018da3216d4474ce7b64f402d. 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/UKS362100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851a32c25554ac80f32fcc5b38eb5a76e45a29d3215c8540c170dc9b27bb5101. 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/UKS362100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6934138adde21a436227b9cf1f55517a59434da0d48a64278fb6f23f4dabe0dd. 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/UKS362100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851a32c25554ac80f32fcc5b38eb5a76e45a29d3215c8540c170dc9b27bb5101. 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/UKS362100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c45a84a2a6d42856c7607623812f6eca86d028018da3216d4474ce7b64f402d. 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/UKS362100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a50ca75a93814133e4cb14402f82f9ad44142a807322e0a59091777d6147c. 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/UKS362100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a68991791c08ddfbb1b300d10122124e97be939c4b202de34ad97393973309. 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/GBKPL1781813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5807ccfe8d917518ba8570df8c46fd3504cfeb970b69d6fa6972718a93b06f. 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/GBKPL1781814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560254f3e6011ff0e47d279c98960f4647ba9103610a58011c1c4c183ca4542c. 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/GBKPL1781815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71db6a2a0621828bc9542a4df79c1982981d32753f1b9162805a92f1a8fe106a. 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/GBKPL1663780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bdb5af249521c336696d8840192f908a6e88c148fd00d2e6816fdd269beabe. 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/FR9W12217246.