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 0xff5e0416f635f515c043c8323cd36b7237bbba0f579bd06016ac4840a70dfdb0. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4c92819-7677-40b3-a76d-317c1433a98d.json and https://artists.proofprofile.net/proofs/artist/d4c92819-7677-40b3-a76d-317c1433a98d.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 0xfc17ff9a2f375928734618bfa45c3a5308a3b825fc011e787ced0c817e78b5ff. 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/GBKPL1782657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30e6db3719d6307ed9037cf47d32e12ed3c234d5e7eab5dcf352813c886b16e. 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/GBKPL1782653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324dca97737ee5ccc8defbace39a3b07873c0ea75b2c6c5f02c077c706f71714. 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/GBKPL1782654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d437a82068bdc3a0aee708a3fe610fb3e92bc8e41ce0a1a717dd9182ecafa99. 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/QM6P42478143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c7e444a403f977d912ad3ad3f51c99f6a6ba06c5dfb5bc2ac8e3c1b366e61. 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/QM6P42429749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a86316853a941d8f3a9c66cb88e8e92235587b8a0bbe90d0b56f3235b25c85. 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/GBKPL1808539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc1323d6124d9ad81e340a2600edf6e81e5597931b4df197fb53b87bcc7bde. 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/QM24S2006878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b07dd20deada03b8b9cb2ab13d977566da0cf9c87d0031b7973bb9a99ac0810. 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/QM24S1928084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a029001a7cecaad7585fde543b400d7ab7195e5ae8890233736fb22f560799f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:31Z), 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/QM24S1925556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c63b67e8482cde83b25019098dbe9e4090c298dee18feface16f2cb7b62747. 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/QM24S2006879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a2acf455cc554c3964a959600525010f0465f953fe39fc4e74afedbcf29d1. 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/GBYPD1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c842f80478a05d825ac4071708c12f8bd2f1ce5e73cdc45d193deceb1c9b39. 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/QM24S2006881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85fa64a2588afdfda2ce34e96883824b3e8d919e8a1a39711af72e87f317a2f. 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/QM24S2006884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a946c013392753a534c9b5846a236a558aff9980785eddcd9a694a08e1792. 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/QM24S1846241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3348d70d98a45da4d337a02e06642df184ecbeeccbe269a5f3d61e84005ca73e. 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/QZTBF2435649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703492019afa7e90d21dcaaf0ea0ca1f50643f81b41e7e78de8fe1c8513f7a0. 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/QM7282477361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbca2201f834555da61fb48fa1b8f5278477d0aafe3e76430a9febe797ebe87e. 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/USCGH1903969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2900ef35d0d2ff3acd5b99ca66efc68ef21a1cf9a63e6a553d01bae4b65339. 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/GBJX31987044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a26bbd16427e128460fc12b87b787470a9ccd1aa41ebb56ee2a9453ae68d21. 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/GBJX31987031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1980fbfe28a5a2d4ecabb7f32f6e9ae5269b255ca0c7a8a3c66e4d25f6c26573. 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/GBJX31987032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ffb079d718906c799112ef7c85b1e520c1380ecf216e29d05de5404263b5cd. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:46:24Z), 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/GB5P51700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46539cbca3d5637f6dfde1095c6d1ad093512e6b9449c1af2a3d79f6c704b9b8. 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/GBJX31987035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f8121736afac12138339935793b98cd2a859b470f004978437169f818bde2b. 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/GBJX31987036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc8fb69b1916b29d33e8a7559bd05bcebe876e39687ce0b595631c45d9b426c. 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/GBJX31987037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5a1807b738bcb9fc693a449e2546e21afa5fc2884c90afa2b85e37e09fee7d. 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/GBJX31987023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e82d5e62d5c937928bec6b9b018ff07962ec5197fbbb50127f0dbcd6eeb40e. 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/GBJX31987041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069fface4c1e636ef81813b62c90e5739d8fd73906c5c743826777b158ac221. 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/GBJX31987043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2574e23c12bd687693c2438abb50f46634a967879f183fc708db0355a4959. 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/QM7282477300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bc5fb93cb49211478778e784bb4612fc1a5e86499b879c9d95e82e5a2a82af. 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/QM7282477343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c7e444a403f977d912ad3ad3f51c99f6a6ba06c5dfb5bc2ac8e3c1b366e61. 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/QM6P42429749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0cf7071e3989fe5a615a2b0d536b2b5a7a5d9a468ac7c910ff61669ee251db. 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/QM7282477359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a3de44443c8fd05f26a8ca70a7977fffccdc4583f2738c65ffc12bf93e727b. 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/QM7282476851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703492019afa7e90d21dcaaf0ea0ca1f50643f81b41e7e78de8fe1c8513f7a0. 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/QM7282477361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54b6ba5f10cdb8379462885e1ad8eebd6f5b65c96dd981e26fcea08db39779e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM7282477362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d437a82068bdc3a0aee708a3fe610fb3e92bc8e41ce0a1a717dd9182ecafa99. 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/QM6P42478143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45293ee2468219160c6be46cffa1f4a472184315d54bdf8c6e9be19a429d302d. 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/QM7282477365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd313738096f1deb6101652e86929dbe8c67b4847b82a274ea8397e3f7b51f59a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZVEM1812793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5beaa41ea77868fd3213ef1c90e9982be66f58a6b47bd788f9733b67ca24bb. 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/QZVEM1812796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a3de44443c8fd05f26a8ca70a7977fffccdc4583f2738c65ffc12bf93e727b. 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/QM7282476851.