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 0xb53dfc9022d7f75f3a3a0ae951978f89e9febd89639a593f5a2b60d0aa0ac65c. 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/17fe7b93-f5eb-4d07-a6e9-fb5849f8a9b1.json and https://artists.proofprofile.net/proofs/artist/17fe7b93-f5eb-4d07-a6e9-fb5849f8a9b1.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 0x13dad8302b7b076fc2388429fe453b24957e0752ba20486c2ba9c94b5df03563. 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/CNZ171500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bebc19d60679b86cd7caeb8207f38f018fc44918fc3d5d21739a3deeca0b9c. 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/CNZ171500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561fe44a3daae1e72abdf415dcf2ceff39ad1fce2196448517295e2d55c46072. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/CNZ171500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d620424846d7deac76de2e974989e0365b31aa69da2ff0f63374840d845ab9. 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/CNA651202087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b6a8e8b80f87f85ef041f57a89a5f16837332cab236243131bc3a53213e610. 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/HKG732101637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52062d84940a54341ef23c1ed4a30ac1aaeca278763c60169167f99371bc1b79. 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/TWCC31702405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c4ddbb07006d96113cfa6512848e838bf256e6225448ff1315ef95d5069159. 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/TWCC31702408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626220d0b5441da5b3164a3946a933156ed3f0e99e0f92ce161462ec71f341e. 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/CNZ171500815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05823bbb0e7b450e3caf07a53ff56b2ed0c6f6bd86f755c33235f512ed020e26. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/CNZ171500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b737a46b7ed01dbe0b282e305670a74d6f76e560e3ecdb099076312c021c60. 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/HKE571441404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf170ed6382b7ece53d94237f9419f72ef91e911dcdf501f82d0274be2a075c. 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/HKE571441402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1a5606b6d11f8f4d4cd2daa93f3a37e43d51802619e1103bb14b370818842. 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/HKE571441401.
放開愛（電視劇《我的經濟適用男》片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7fc6be10d719f28e1b592aa6470b026405c0f9c45a421d87615287b54c975e. 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/CNA651201173.
愛情沒什麼道理（電視劇《我的經濟適用男》主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd0e68c67aa57cb87c5458ef5014e96c5086a4cf0fe46706f1084665fa88a3. 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/HKE571108401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d72573bdbb841c8220af1d19af86563cf046e8dfd382d0918b2b9437aeffaa. 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/HKE571108403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b243f677b6b1eb1614726cfd0c63e0638a253e33151cbe0497b60ce19cc4300. 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/HKE571108404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377583d85f0e56358ea7a459e36bf4d7dd0495809f5f1e7864fdf4955f63b80. 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/HKE571108405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e621ed20c98aa75814c62370a95a5642bd07e80564d742896b5bc753ebce5e. 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/HKE571108406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ebd2d698698ea723dda6e79f0d51ee8b73bdb1c358b92dc2174c5f47bda29c. 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/FR10S2479084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02778ced6b228bc0c4ee761fd0ee44fe2f957c2e5a74caf843282a595b66e7b9. 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/CNZ171500247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d75ea275effb23d0a9ac65ffc1565dc70550d6eaa2065c49d9aa848143022af. 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/CNZ171500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf541a3c16b429c8dc67c81aa052ec40660fb0ed010b232ff94eec1970d283df. 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/CNZ632400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5457cd648cc693e90180adc8ce5a8e1f45c4062218bc22ac87738419197895. 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/CNZ632400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb43f9432545018c560a50e9536f6afeafdbfaf028d757c75881e959ca4e281. 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/QNSM12400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa241e270bfa33f3350b741c8837d974fd3f138203c90f2d8c54e8f4b6afaceb9. 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/QNSM12400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61292bd9c245c29bf1920c5904ecf186404f2d841c600e363031563087c9680f. 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/QNSM12400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff676c0c48edf40eff5b2b0437f1d9a4c73c277c216790bd63f44cb3d41c056. 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/QNSM12400875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac1e16e9d984cd64a840e506f993f8977040563f30578f74d8d17ae85e8a7f. 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/CNUM72500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d8b9f4bb7032c919cd262ccd0ab04bab0039ba8709b3178ecba4df32cb7634. 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/CNUM72500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d16efc054ecf20c520e8d53082ab5ba7f9ede30758748c528768300198a697c. 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/QNSM12400930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc0a6a51b6efe8db12860a0778d4cbfff851eb64de51e2673b991f02737985. 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/QZJPM2486564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ebd2d698698ea723dda6e79f0d51ee8b73bdb1c358b92dc2174c5f47bda29c. 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/FR10S2479084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154bea72fe768f115f7b2c453c1819c28391efebfb2ebb61a191e5994f97e0c8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QNSM12401096.