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 0xbf7c4d88976f0daf74399acfd299176ae580c3aaa3ed343e829999d55b1232ee. 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/7a5c1be0-028f-436a-84a6-c580045b8930.json and https://artists.proofprofile.net/proofs/artist/7a5c1be0-028f-436a-84a6-c580045b8930.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soul Women : Masterpieces From the Queens of Soul Music
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 0x46e19955affe39f7af5f1c2bc621316d3ccd8992743c7baa1f4823c2ed2751c6. 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/QM4TW2081096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6680f73a31035c73f94cd26443e7c9934f086fbdf719401b1f9bb5eed9f236f6. 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/GBBHN9400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7994680b65235c0046aab6aaa0b00a160652380929434a5c9e8850733ddb97d3. 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/USLNH0905803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e4d5c2b5f5b48308d8c33fa35ed2b861c498a453881c5065319b408e374329. 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/USLNH0505606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea078eca7bea748a27c84ffecc7d1c6ab7b9e10c28c569f8326428dcd824e691. 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/USCW60600703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5dd514df547fa3a9d8361ac31e7f40a2dd797b19dcadfdaff620ffa235ae02. 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/USCW62155902.
Pot Can't Talk About the Kettle b/w Gossip Don't Worry Me
True Love Don't Grow On Trees b/w Sure Thing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5dd514df547fa3a9d8361ac31e7f40a2dd797b19dcadfdaff620ffa235ae02. 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/USCW62155902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d483830815f4e752e326ae0b2a6650b90d4eb8d05f06f07b1b1a966d27fd404. 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/USCW60600701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4593449221c38a7f54c14d99d6a21b7cf09c07b80859614faaa63addfeecfa4e. 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/USCW60600702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea078eca7bea748a27c84ffecc7d1c6ab7b9e10c28c569f8326428dcd824e691. 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/USCW60600703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6dcf6e27d0fb1b19c24d67abaf155fcb18d4aca839f79b1a7d16f4b251a30. 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/USCW60600708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa691997c0f2233a600c75245acf36107173fbc2f6e8f79793f90e0a73fe246c7. 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/USCW60600711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1040407ddb3236b5f4b52f1ce4aacf4248e252313ba83b0ccd5d7a1d1376f. 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/USCW60600716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640f978f852012d8f90a088b24213fb80ccad51e816d71faea796f670217af1b. 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/USCW60600718.
Eccentric Soul: The Outskirts Of Deep City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285853f85f82988df6a747943cd1ff9eb8494221483e9d3afbe76ae2e0e0f7d5. 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/USCW60701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b56894ebbb4496fa265df5d20b0bc444a7446017dff8ff64c5946b50ed0665. 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/USCW60701705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69269cf63b2babe94dc300b6776dcaf48c88a39231ed3fc3cf6eb8e0fa7908c2. 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/USCW60701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdcca8c47beb9e8b8d761cc04172c0dfd4348142ef3e71155a85ea26babaf60. 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/USCW60701708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c14e8407850bf9ea898b8cf32d522b0b6fe972d282635c4025bca2a921fe38. 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/USCW60701710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb48bd3aeba8c33fe3fb406dc10a5e2a6de3c0316e9a3887e179d43620caba8. 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/USCW60701711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b376aca56a5374cd9da17cc92f6db4685282c027886d4b1781067d038cb6192. 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/USCW60701715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff009d2f1e8cf34832edb09a01fa64ee7ab1dd69c5758e68d03516b4d2a0be. 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/USBEN0752209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0744b2de53f191accc18aceade3076c6284e23b036d3f3a134d42c8b2a356c. 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/USCW61807118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a656ee02ad78152711eae6795e0221a317bde91dd100b8ef1f10e30f36203. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:10Z), 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/USCW62020313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeff20d93108c08785593b72cf727974a1dc821c124e5b4c8dd93970a674cd20. 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/USCW61410503.
Mad Men (Music from the Original TV Series), Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135df0201053b6480d0c461235effee8682c7a98994cba129c03b68c22ac85cb. 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/USRC19305877.
Miami Soul : Soul Gems from Henry Stone Records