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 0x576162eb6b6b3a6ec0333a640d03997bcac7bcb7a7dc88ec02165914d8d7b9ab. 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/72babee7-f15e-40d7-a998-4be1d1ae2109.json and https://artists.proofprofile.net/proofs/artist/72babee7-f15e-40d7-a998-4be1d1ae2109.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 0x2180e33829b2ced9c08c65b2b1ab1512e4288ff0781b2ef9ca713e76c6a15fef. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBGEY2000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921702186c11d24df6c3dea39af8f84fbadc2427e23420ca94e1e81a1caf77d7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBGEY2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180ff5738cf1c6fc4d969bee25ba98bbdce96a057112ab913b6adfe5721868fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBGEY2000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e1904797007ec2b10af87729e8b0cba2e1d4e7ef9e3ed32d7c22a5370db9f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/GBGEY2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b65ece7f236d8fed1b02c7252c488ca4834a9c8918123264a3754b8e55771. 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/GBGEY2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5417646fa81a38f98f908c95e52818face0396f3df761b632b124f6076e97c3. 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/FR9W12211010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c0e584087e42e0813361247cdbe2dc669f070da8efc64ec8e6fc6a67fd5e79. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRIDO2211031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c0e584087e42e0813361247cdbe2dc669f070da8efc64ec8e6fc6a67fd5e79. 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/FRIDO2211031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c950446cadcc532716679579057d37ac2eaee24041767cca7593b5441a4e29. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRIDO2212422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef7f959a0c5f296fefcb6b5598bd75aedf4a204c715a49de4b026afe65e9d4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRIDO2211375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f1936daa0865000ce3282f5d0e8b389b54fa1a0754ff5fddce508e2b52824b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FRIDO2311617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395d43a2d3cddaf0d77e30e7af8a8488f90da87b0210274f4af18b83471f626. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:11Z), 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/FRIDO2314817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe988dba5cecefe57a9524ef27370bade54c8b91f3257eae355ab74aaeb742f82. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRIDO2413421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fcdcb13b58baaa909562ab966a7dece5f6b45e4ca28464564a940e3e1e95d1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:00Z), 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/QZTLA2501383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ab3ad4aad4d0f938daf064da0c3c16879c0e912afea1d546790dddd49cfa75. 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/GBMVH2200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d938b7decaf88afe657c2956972f67a338c689b8de68a36b9699ce291819a3c. 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/GBGEY2000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380ce579b26caab10eaebfb97d717a05be7c2f983e7204b1c8e3776ca6aecfcc. 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/BEN582400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba3e5520d4728a7900a35dac3c441941c5b88300c309ddae9382ad66bfc6bd. 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/FR0NT2100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b681054b68820155d829d125b34f024b36939a10df622f15316e7f4729348e. 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/US39N2310851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b681054b68820155d829d125b34f024b36939a10df622f15316e7f4729348e. 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/US39N2310851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380ce579b26caab10eaebfb97d717a05be7c2f983e7204b1c8e3776ca6aecfcc. 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/BEN582400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d938b7decaf88afe657c2956972f67a338c689b8de68a36b9699ce291819a3c. 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/GBGEY2000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dee731967dc497c893b0a1d3d9a8dda9d7b5127a1a778490a4e884c274d46a. 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/FR9W12303541.