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 0x39adf01d8222d04b01adc8d4b0771aed272dd198d9a191c8711df109a404f281. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/785b828c-059d-4c63-8b4d-e73e7cb46349.json and https://artists.proofprofile.net/proofs/artist/785b828c-059d-4c63-8b4d-e73e7cb46349.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 0x4b9309b03f2c31356f79428255433836393db202c2938d7faa9853063e23d30f. 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/QZNRS2093808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15af4fdb2bd25cc7ce3ae683f088083862d228fb752a6cc2e38d1ce98597524b. 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/QM8DG2180527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4732c3cd77500551df3687b7e912627add4ec894dff6a4a370a4d7e2a864d. 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/QM8DG2178768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4565c73307837ce1b7505c4b4659f442e868efa43e3316d54d9d7ca737052cff. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/US3DF2492867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5787f5917419c247032e5bd229b6042e7ee1d016d69325e9025b584eea40c. 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/US3DF2473567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03338994ee17a65e9b1e4dfa2ed51f874f873aabcbfa835589e1bf42d8cd0820. 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/US3DF2473569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90816bb26feedd51c5f4cb50fe11a077e20f81b5ab6c92d3cad1a9c50aade3bd. 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/US3DF2473568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bdf59e25ef7c8b6e6f09e6faef3c3d95a9feae75aa59012eb829afd3de0570. 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/CA5KR2341696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cf7838df75d9ed9e72f12d635117c3ab1c96d0d4224892b780316b12d101ad. 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/CA5KR2430406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce579a36da19f10eb458d1c6cb7ebbbd1983398a79113b3bad0817b4e8b97d3. 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/NLRD52257988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f977b86c7e934381c5adc7cde76282539db3c2b691051c9421d95f5b4befe. 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/CA5KR2335987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fdc0524686ca6f2fcd021f2ff4284127c04d5e566ebd697978c6bac8f40dff. 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/CA5KR2352493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fdc0524686ca6f2fcd021f2ff4284127c04d5e566ebd697978c6bac8f40dff. 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/CA5KR2352493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf53f935ff690c9e701964f863f7a3f66ddabd0db00a2288c330c166bfb8a3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2347029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bdf59e25ef7c8b6e6f09e6faef3c3d95a9feae75aa59012eb829afd3de0570. 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/CA5KR2341696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f977b86c7e934381c5adc7cde76282539db3c2b691051c9421d95f5b4befe. 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/CA5KR2335987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96363bed7ef3debb875cca7c56326c786c2c817065060cdb0a88fde7b75db1c6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2264066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fab22c7bdca315e723c2823156b101503e12841cc72e24927df5cdef9cb9e7. 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/FR59R1742256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627b93581b5a9ed810fee4eda56f58a242548e6b32818ba573f276d28509e3ad. 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/UK6821634101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eef1455b14052dc1b9418fa5c91dfe7e1888ea0685cbf8b95095632e1d97aa7. 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/UK6821634174.