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 0x5dc4a38444b252c7d208aff2fd55d4792be93252494b076ce71aeaf2873f9179. 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/06e467a9-75d7-4e1c-b9ee-c3d91b39124c.json and https://artists.proofprofile.net/proofs/artist/06e467a9-75d7-4e1c-b9ee-c3d91b39124c.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 0xdf33b721d647757c582eb0c49cc62843a894f01cfa6714226c07b6e0f0481fb3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USF271010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac117a493e1af0c1960c8336bddce60074e67f95038a733e2039a974d577ebaf. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USF271010003.
I'm Not Locked In Here With You, You're Trapped In Here With Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2d85fd23c8e5c8d4ddcc1475b4f3bc68964cf24a289cbccd0e0736d75a96c7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:28Z), 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/USF271010004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373aa6b88171b2e3bc0451c21edd9afb33ad68d010e90d418921494835ce4610. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USF271010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c4ea5b12f2dfa27b9aa7819f3f64745e58ceb6b5bae31fd9adcab7bf67f1db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USF271010008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe182fb22e4f8a880d79628bc84d8757d24a7cd4ac358b7537eb5fab19d6e9d6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USF271010009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3407e7671bd23cfb2e9ca625369470d296e27d627fb61dbe4cf8a8551cef7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USF271118701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b2e2bf12fd230f64cfdf3fe13bb8ae069a374a3a1cdcced32a6b21b4664c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USF271118703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3653bb93783312442ed0e0643de02bef8781b6621823373262e577a8c002d1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USF271118704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47deff82924252ee0b6cacd228538b46895e9b1a251f76edb0b1005e46be866a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USF271118705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f386b43a2728565ae4c5b560226d287c3dbbcfc19fdf7ea4615e7f27273f10. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USF271118706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf72d6d0fabff753a92be6ba27ac903a5fdfc013f11c76e9955aba57aaca3e2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USF271118709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911eba27fd315e318b3224cf71b3fba9d5003c43523ff41c13f25eafad0173ac. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:43:02Z), 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/USF271118710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f7bac24a5c8e061c3648acffb499caedb183213df823ca4d9c262aafe135ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USF271118711.