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 0xf4dcc0769684a660947b6219f1b457344969be24b0f9bb3b681ef9a87aaedbf7. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e48808ad-a060-437e-8c1c-d0d18eb8562b.json and https://artists.proofprofile.net/proofs/artist/e48808ad-a060-437e-8c1c-d0d18eb8562b.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 0x9ee50c2cffc094a1d6f201c484ea6fc189a438e477fb611f1b3d84b1dada2d50. 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/UKN492305542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f9547746a421045d79b6b55ef06c494884415c2ef139d15e8f2b17f5fc1478. 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/UKN492305545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cfbcad6fd14fae06ea172828cba4c9bb2e00fe85187521bbdd574bd024a201. 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/UKN492305547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ef70077b97d423ada992e35bdc112e310425a9b42225f2c317408a4096d729. 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/UKN492305548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7ade82cce8cef92d8c777f2ca77b7ac8f10ed5a8bde55869e8f8af822e455e. 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/UKN492305552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a345b62b4d8a070c47ff4e826c69a9798d0b2f1f386e88529cbcc39821e1fa2. 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/UKN492305576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6820c26f30035f97ab99ed07c172955e5e6ae7a52797a8e1143d08852729b6af. 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/UKN492404034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7549d1b1f2b95149f9402ed4173fdb321c0caabbcedc2232902f86e908e24f0. 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/UKN492403004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38ada92b7e9f7075285c5836d1d44d6aefbef3bcfc081161420ac9c7aa5279. 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/UKN492403009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00871f77a851f6e2c957e268ac71c0a7140d38c62e1687e42564badefe4d75. 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/UKN492304508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa9fc11bc87a199620a636ae366b15ded8a051172ae1b9bec62243a724e302. 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/UKN492304509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ce1df3fe3ff4346cd5abb548e9039a8f5dc61361d3bbce3d60c15f7aa340d. 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/UKN492304511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c50d5a495d6e880660656fb3555e79fe263a4665ff3a09fc7073537f0c4bb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKN492304512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7889fc4326fb79c4e6c7e89d25dd1cc79b272c5b50971f67838a0ee6a795ed06. 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/QZNJY2469836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a369c32d9b11406706ac6237c4f978c196ebf4470138f853b8944014f795ad. 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/UK43Q2413120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5de4f6991161b5a431c5845cb88388c7275aa231b08c8669bf9a923431de8fb. 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/UKN492304544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac107611bfaeb3d3415406865e03e3cacbd96318feef22c8a3799aa7400f3e. 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/UKN492304545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8736fbb36064ac38d37931a904b89200fba18c2c16bdd4facfc92484de0654. 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/SE6XX2372788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56508c27054b773b057d70f18a9c6c3f91714ee66e250056b360c718157d7881. 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/QZNWU2274421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2498e9630c4837bd2994b7ec0413d740bdf3ccb7b9a9580f438ee276c7b10ad0. 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/QZFYY2402872.