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 0x95347fccd8641f72abcc08da5c82eb6e69a7424697fcef082e397b00283c5e03. 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/35c7ad1d-02c2-4f92-8324-22a041804c87.json and https://artists.proofprofile.net/proofs/artist/35c7ad1d-02c2-4f92-8324-22a041804c87.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 0x0eaf33a3748ad249836cee62f37c2852722158faca122138acd525243f3029f8. 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/ITG7P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f1b70b4700c9ac3eb4f099349aeb48df44fd6dd9c2550ffcf9b694e4c4b1f2. 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/ITZ042200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5373321d79419df7126500d5b108236fbf177c740cc5664b029008ec31a7774d. 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/ITZ042200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14ee814633eef2956dbae51453c67d77c70b3d844b10c3f824d58c146bc935. 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/ITZ042200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c666e498b9eb628b0c4e26e7798c34d82fffd2f97c5f98c0e085f8a662cb69. 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/ITZ042200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18023c369378b642c2ffd04c38ff6a0be79487e518494494a20d0c8b2c7c718. 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/ITZ042200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd66c3258d1a4734fd9ddf9df72564ecb12f7d4f093de2f1782b9c69e79df81. 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/ITZ042200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dbc9af4aa2ab663ad43baab36580b0d32d1ce74749d47516a040df14b029e6. 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/ITZ042200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2345bfcd6e33499763e54ff57009c586696c04857c13db355d1825920f4551e9. 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/ITZ042200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb77c15e9fde6b7d8cc8a84beeb11bd75ff09c7ec986c3fa4648bf62e5af1b5. 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/ITZ042200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e3e6c9d6adb3c8538b41a90fcec0c4b68633ae1400667364a4956b69906a05. 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/ITFR81700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc1ab1d4611bc2107b1d24f83ccc21e5f52bd49987ef29b86ccc8d2be6fe35. 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/ITFR81700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaf33a3748ad249836cee62f37c2852722158faca122138acd525243f3029f8. 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/ITG7P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73f8fb7a4c31abc79e995323957d68bfc7a3f4c1a2440e7fc2286af3eb8813. 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/US39N2309066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b43a61472cf7de6658beba32cd8ec647ca8ba813040643b9ed9e4c39e40ae6. 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/ITZ042000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc982c58c728ae3c2f9685017a709a43033dd5572c90904ef59b77e3113e99868. 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/ITZ042000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef3a183bb75a31d2459101e9f9cda60d15630253ea64f9ab001eeb48ce4f06. 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/ITZ042000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e00083cc31662a86f30cc2ee1050796a9e7f8a323048f88af8f49d8b7eabf6. 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/ITZ041900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1a050020679bbaa4fc57769a561d8b231f63cba3f936e43793deceaaed533. 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/ITZ042100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa209c6e48781dc3836c41de60a8a1d4d5930b91d91a62484b937ab3c51ab0. 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/ITZ042100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4924e8da80a907ae028b7e6df39a17751fec20701f858aaa007ff73f2762a2. 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/ITZ042100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a0c8122f3df029c378ffefd152c3194de5c79a701b6d3a14f5b19a1933155. 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/ITA642500002.