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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b857366a90aeabd5c5c5bec5a79d4012c2ad97210dc5ceb220d029f77943ad4. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36a2a4d6-0b81-421c-b4eb-52823320521d.json and https://artists.proofprofile.net/proofs/artist/36a2a4d6-0b81-421c-b4eb-52823320521d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4dd918ac303a5d30007a65541a7fd7b403472c7a5dadb088cdff26fff04c6. 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/AUOD21100713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837bd3a09baa2684cd7c4470a4ea6426672c613e8a42d91a1d175bccc6d66d21. 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/AUOD21100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc31ef2af9729869eafd401896b8b104e5fafaf1ac2144d92e83ae498db9e7ae. 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/AUOD21100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85afb6947007d244164f863389e982c4e32bfed7ad29254edfdf9a062ba75d96. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AUOD21100717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c84e843dc92e0b90d781faaa9575cad38e7369969ef7bd8d4730c7c495fec8. 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/AUOD21100718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e70a175310fe94b8cd4e42e0b7e5fc847bd6687c00f2b2abf15da20161752f. 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/AUOB11200917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52888e96e7e83baf778e9686f26d4f5c30701b5089f4457ae854387fefe75322. 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/AUOB11200918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e411fb2c594f00911231a6577264b868964b66950a5dc32497f6b28078b4f3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/AUOB11200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c41bd11364f5f347eb82345e4d5ffb1c63b8ae858d8beff3189d92dc3cbece. 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/AUOB11200924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314011ca2d0e24edeaaa7eddc1e4e4738b01e8dd2d9301964baef3ab8413abd7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/AUOB11200932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378b8e25970c7a1f68f8cc30707031760cf6bda9d9851614286bcd293c57422. 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/AUOB11200933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e06c483172ea1cb3fd77e8cf2a3d00bfe744a6d74fbb2bcd821fc85e24fa1b5. 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/AUOB11200934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6388cbc75f2eb5d7b386efe673c6c1d969da0c940b0dc4e8abdcd5a66c73a8f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/AUOB11200940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd8aad1e9e2a3a26f91e73614c9d9fa1f95ae110616e705fa8eced81cd07a6. 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/TCABH1272438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6431133cc220f1922bc90d1fb009730c90f55b68af142a01afabf68c4a2fbec7. 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/TCABH1272451.
Internationally Known (feat. Tommy Illfigga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b908fb0f00f5af2f528ccb59b039ca1fd4589cca511e5d6e74e1a6ce804aa64. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABH1272455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c2b0893256848caf7a4d56f0abf4d2879f997339f4d953e67f219cc9d8cf44. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCABH1272456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56ca1992c0fe56c8e5499fae94633b2fee679ef0c1faaa0104ad9980f109676. 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/TCABH1272457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c03ffbc45427ac0415549bbeb0901c0a1ed9fdcc0d3c68ed506f12c534eaa1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCABH1272460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24efa1880272daf782cf5f938a8e8c259677d3932f5605581db5b6357bd3b86d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AUENA1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc879396908551e2bb8c546c327d4d8e10df4b144571724b7b798b1a903e8881f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/AUENA1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f27cd60ce0802efac97fa5e81668a81e1b6b629ef52955977844f33c714aa3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/AUOD21301469.