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 0xefb1ed25ab78d4c516eb422216d04e4bed68f59a878bbc50ddec40ef8dcc67e7. 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/7dc7f366-022a-4f61-a442-22246bb5be06.json and https://artists.proofprofile.net/proofs/artist/7dc7f366-022a-4f61-a442-22246bb5be06.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 0x82e358eb7e83bae0c3cdaf76ea3b407d0d5e7249772b71636d519496a095d062. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SEVTM0501602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc5d8712aa8d13c5a31e122a860f301a65a0753bc00eb4b2641c0bb8987cd8e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYYH0900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f7ded2f0a51b00475324859095ca8cfcef9501cdd13e2bb3afa0b07ec7e9f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/SEVPA1200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02708d2b9ef04ef350879167db6dc72276a6a0eb3564395bf8349461d715fcd5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEVPA1500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6881ef22590e2c7946b596448b7014064f3d87994ec5e24e60bc036a4f0cf1ff. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEVPA1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543e816f7c7d610e72e19d3c03b990ba9ed8d2df477531df607c29d7ee7e9ee9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:24:18Z), 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/SEVPA1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79f6fe23f60a8ff3760bed43c6b162294a634bea6d11ec60a8c33b4a3eea51. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SEVPA1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25bf7b7d49b700539158bc028fd2e89cde3ee0aff25f3540098560abfbcb891. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEVPA1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbac62a08c779f26cb3188a09b4cfa11799bb59906e7c2839b8aed53091aefb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEVPA1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3f3e3f9dfbccd1e9f4edfc967f5bf53346a762ec733ec7c0e160500125659. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SEVPA1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb835899e2622c831082a8172e7717212e78bcb980c1ebd6ed7d275cfec3c2e81. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SEVPA1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c59672268d4cafd664a6c79fd5207a30a8e3d93dc5e452304531ac7104f373. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVPA1800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacaf7e85194ef8df8039168a0df50a67d5a3a9154866ca716a3be2280f74516. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEVPA2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf522686a5b867e0ba42a75b74bae9ab46e2bb130909ab927978ef02241f098. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SEVPA2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292570df312cd7b131f7d6b8841cf1659dcb06ffcc9ba090a8818815e0f3b44c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEVPA2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb557e206b3cd21ed5178bb74d4b1f65528a708a4f8cfacaabefc5cd8071a7887. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:37Z), 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/SEVPA2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589cd9eda8ac6fdc7dc16131b4c75fab81dfdd30f8638d015d91d7407cb8fe9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVPA2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3a7d061b84027f3a19e46b2f71910e5cfac842660443bdc14bf61b1643cdb5. 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/SEVPA2200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7608db986f5ef5d78a3b974f953ac9d4171a5f0dc3ec58cc3d058e5e959ef14. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:34Z), 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/SEVPA2400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a8e91b2b0e2acc40308b4581048e380e18faf272b36869f9f70eed590f3533. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEVPA2400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edf5ffa08ba13a1183d70e387bad9ea4a72c194c83093fe98f50f09f13456df. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SEVPA2400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf422043ced4eb24cdfecdc181e85613622124173e7a3354ca86cc289f1af4d6f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEVPA2400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886e18c0c2c2a38428853bc0473b549c20112f487c5f708ea3b067c84e9ba9e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/SEVPA2400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b7c2d33cc285de4bb9a98f52afe283495c76a9dd9c8b07fbe24df03b8f30d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEVPA2400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eac9976d2b790f044df079a00634309beb2a03ccf1c0c246ee65d6d4453a34. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEVPA2400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959dd0fe83fbf9eda70083b064c3acdfa05630cf29521ca715ef3724bddb963b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEVPA2400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081bd74aba5688bf8336059801f60c715dfcd95e0320cc7d38f575ed9e44804a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEVPA2400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656084633c8fbc86684900b37bfbb5564ae56623be79c52ed64edc7e4fde2696. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SEVPA2400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573fbe7f86c3f6e58a538810e2c21aeb395168aa010e2aa6b361636c96bbc8d8. 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/SE4WM1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c5da5ecc207161e6c1823212b38ab71645f6f3ddc61be3a980401754db9d1. 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/SEYQH1400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b40904868dd55c4122df8d79899cf225574f6da8bed58054d8c7518a05bdece. 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/DKBV71008914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055efbaf81d0d0826f8ae1492a6df4311bf8015cb6fec8ad99d837fa8f5e2850. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2377664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b40904868dd55c4122df8d79899cf225574f6da8bed58054d8c7518a05bdece. 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/DKBV71008914.