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 0x654fa11adc852be0b1c29b204dd053d7cb6b35b6e407a5e6492c072bc853b2d7. 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/958974dc-eb79-4318-be5d-481c5377d311.json and https://artists.proofprofile.net/proofs/artist/958974dc-eb79-4318-be5d-481c5377d311.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 0xa0c67e331a161818500e51d6997cc9ddbdacd81b8dfdbabebecd0f96c0270bd8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZNJX2121824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d4c7219b752c493b2241701c5415b346668fdce4da68c95dd80aee1e71c79e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US7VG2140411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b485ab6eb70915d7717bc7f501292e7e421b2d15b50b5503fe4ed6171c73db2. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BC7F22200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392e7f3726e6345b10e31456705383095c41f8eff12c56b0acb9248732bdb14. 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/QZGLM1962119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354c6b038da5001ef076c6982c98b844aad3bca0148625a604bd7e24ab0add98. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BC6GH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf033ecc0526a51b91b21d47334625fc654ae9054770e7d883ac39b8ecd0dc7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5FN2223036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8349440e842f247c9150746821df288927fc961cf323922a70be6d8ada0f0dc. 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/QZHZ52275340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dba397f3bfa88b0593d2801c2f735eb7e0afb97ea001d897b6e63914914a65. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZPJ32368939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788fb0d08bb321125b64a6a76a3bc155c9311cefe528032714b8655727edb4b. 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/GBRKQ2269291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed3e216bd294485582b6c432d02a465945e53e1a69d7f22e0b23ed04d4eee4a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZGLM2110603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f56b5db38677165d1e40050ced9984fe7c8486ee460f0eb2b5a048936cb21c8. 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/QZNJV2089236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04159569c93c72a83ce53d071d07276a7c9e5e83b7641ece7e58f3be91340c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US3DF2086105.
Unbelievable (Hot Bullet, Evoxx, Joy Corporation Remix)
Unbelievable - Hot Bullet, Evoxx, Joy Corporation Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036804a398ff85880d8e59b59dfbe6097a2b116f995adbd2d259dd4674dbbc78. 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/GB45A1901583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e1609aeac0d8880159508c4c432c55ab1d9eb9a0ae02ace226165a77ccc072. 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/US7VG2075608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd796ae1953ecf392dc7fea2f4ff96ae04d97c64504c9bd109a7ad09aaf0f9971. 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/US7VG2088233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6dbe37a2bb13a0093585386a6b6f87422381c1778d2a4bf300f7b4521a462e. 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/CA5KR1924028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42ee7d34858eddef0e1ec4009f450619a5e80bfb2d02e4b81234ac0586a528. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZ5FN1991897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d2879cbf39f69141bf396accafe1daa4f1ccdfc42bab7869596f85b014f3b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZ5FN1921326.
Terra Sem Lei - Malik Mustache & Evoxx Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb22dd307ce332ebe054e919d6397ece339a3ec17377d1004806a2d35b79db. 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/BXTHF1700005.
Are You Down - Gustavo Mota & Evoxx Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b68007c8cb25cd295aceee2d459226308cf3debe509836a1cd78ea87d5a402. 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/BEIW12200481.