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 0xfba9368aa15b9e5692859ac9a664900ee12102001a89fc63b5af455df49f7772. 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/15aea290-8216-489c-91f7-dc28031440f9.json and https://artists.proofprofile.net/proofs/artist/15aea290-8216-489c-91f7-dc28031440f9.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 0x6fa7cf8753452493216b8f35b9df49ee1b48bc17d64d5794ec9e8fa4cadca497. 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/FR59R2212814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37612f834f48933f1929d38ce9b87299010cbeb96e3be05d62a480f152ac54bc. 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/FR2X42268248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4400b705f6cf48f347f6ab4cfd58f4e09bbe99f818d9dcbf2abb339a35424. 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/FR2X42267960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b60b8c24240379d5845c7f83d0484cabbd1837f37264fe5af507b6e5b2aea9c. 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/FRX872173819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c6eb2306505686c3a9b3195dfcc21a4501f881f6daf4322790d9f5f1cf6ae. 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/FRX762181879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a713a489a9dfe84657b2d0c7113d4d98f2840908469fa5ead4e05853df5d11. 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/FRX762138132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03f02792a277578056b951219b64bf14ac4cc50f503967259d218cafd16a7de. 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/DEQ022110816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9011451d52b491c337a461f4983ebc1fd107ce00bae89d4c246deb158c0478d2. 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/DEQ022110817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616a1c885547d5ab0b1180947871acae908f1bf434bb100af7fac445d68c6d51. 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/DEXO32493745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6185795d6431c4a54377a4695ecd3924d6416fad226a9d555b7b9aa73ed5640d. 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/DEZC62407421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f81c2d8a3e58e2c86c5ff82656d56ce6aeb8cc7820ee824dbeb587fc808de. 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/DEZC62389609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f8199a4b7dd5e18a5ef70861f5bb09708906680abfecce50d281d8e4035647. 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/DEZC62493727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124870bd4bb94301b15803d0a5ba7e2b55684f3216045f99a3ae95964a42f5ac. 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/DEZC62389611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3142ff5febec2fb1391ebc58caa2ca2b8634ee3fc64243c39542c6aa8359f09. 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/DEZC62333785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0422562a1e9328db64c4d38579c9ac91bdcf9a86dec4be0bd1ea0a7a6003ca6e. 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/DEZC62339407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4956a71b895ce47b9e51725b941d22cb017cabb43b2763670776266125e8bff. 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/DEZC62354802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67408e9fd8c576f9cbf14cec0c30cb4f9a4020d6674778fe830fffdba39b490. 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/DEZC62343854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bac7acf6fb2ba65a66252e57a9c8e9b543a1d2ceb839da66dafebe4579becc. 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/DEZC62340051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ec7ee4c5e1fc549fc74a4d69fb37e2aa53b7de9f64b5d3ae489f69313283f. 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/DEZC62329367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5f433c1188d7f72f0c0fb9242ee43e76cdc323a02fb03d5103dd69d0ec38a8. 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/DEZC62321168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b4dc0cc21682c45a16f87e9efb36db60da27e649ac99845f5484bc3cc0879. 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/DEZC62213903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d38d30d3d40eada35c5cff03d3fe6ccef591ac84c66a42b700a4a70f76758df. 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/DEZC62215555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e35744e40ced816be965760a6c7ac459c8175d38c28ef5a97984e76dadcbe17. 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/DEZC62290746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa7cf8753452493216b8f35b9df49ee1b48bc17d64d5794ec9e8fa4cadca497. 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/FR59R2212814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555f621a93a772dfa6273e9661a3a34f4614ee2cb6202d796efc11a40180834e. 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/FRX282042218.