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 0xd9a63835855b4136f61510cf5be91a6e4fbf6177f948ce49c82fd7306e9bcc10. 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/2e8caa19-ff48-48ec-8b50-b0e2efe39aab.json and https://artists.proofprofile.net/proofs/artist/2e8caa19-ff48-48ec-8b50-b0e2efe39aab.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 0xa9684c9b3bf0310b37d2d8edc7061d0b501f9715d3817c0a765530390cd458f0. 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/USAT22220922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30645a0e69ac1b75a3fa6a0a476866ecb7c1cc763714a013b26941d21385e635. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR2472678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16973cc826829df4dcf0a5970c1b929a345b6943615086cba8bbacda2e3994. 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/CA5KR2472677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18f58aa71ddb4f238da39ffee7a8d460f318028f06edd2e221d261282ea060d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2462340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa508146fdcf7fe965aa4ce25ed1e59af17eb65a31f2cdb9c2ccb8c8333c7dd80. 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/AUBEC2451098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5371012b9d13af89a8b9bb7c21248c3aca99341f9fad2965e92bc9d457d81bd. 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/AUB1F2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ce9da0f4e9b689583dc922b11ebde9ea54941be198129a51e7f58c53579ac. 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/AUB1F2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb570345dbe841b3b30ed5173844a0eb197fb94af5869095f632a2a7ba4b6a. 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/AUNV02400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa371f62265b91cabed715d6752bf44c6db2e5c3c015189244aa64ce575c047b9. 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/NL8RL2404080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08384b7abeccb156e355490626efec1e7572e26fb197e8a0bbdb66b868502ef4. 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/FR10S2491567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a535455c16b5636a5723d9fa4a937a746aa539a984f6de5b91416013ff3454. 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/QZFZ42460099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481e64aaaf5af58b333db7f2d9590265d58e6ca542141d8dfa4ee3553ca8888. 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/GBLV62323342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86988e8406843827bac6a6ec041da6eb58c3940ed6e4d68e2b3d4a6100cbf3e7. 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/BEB682300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444b784331cc6ea4febaa9688371ab40f6c386bf3c2cbe03de587a95631b5921. 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/CA5KR2387369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10b21991f69cf0c9aae428afc968261e9ab884445edc4a13054aeab8165ecf. 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/GBKQU2387058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba521d3b735c389179660e7784a7a40206662c4fc3a75861dae7a8ae1649b1. 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/AUNV02300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da45f1844b0f3d2b15b77b42eafba5f974952f741a355c285f69be5210d0944. 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/AUNV02300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8135bfdc50b5f39e0a9203e440506d2ae3eeabf6e3434c174fcb25c65141f50. 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/AUNV02300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ba6b6b42abd8a152ef7e8bc52c050a2aaf54cf26a4c1f2aa84c97cd05b9c36. 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/QZK6M2341673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff77517819665836be32630b2576e32d6df46f290c5387f4e2e9e0d0d29ef1. 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/GBKQU2334656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39023e9eec5cd38b56fc52e2f50a17ff9fa33fabaebea011ebee2c6b3ccf457. 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/AUXN22276100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd51b0a5aebfdb5decc294cb198c82930bef1a053bef1a87f694d66b9807cffd. 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/QZNWV2297353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa74a77b1f1340c212fd49e8dd426cbdd5340cc581ba9dc07b8c70465997ce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUB1F2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd555ac397e93473fd7c28b48a1131ccd5d5073d519bdb529d07afd8ecef76. 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/QZHNB2203814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01390e17c0fe73481fcf1ffa614dc64c7155205fe2c4476be804ee1eeab8899. 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/QZDA62261027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf971401b0132b23fd2efa57e32f5fd7fd9e77160dc3d2001d32be70652c3d0eb. 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/QZRP52177874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc6f806d9556a41a7f7da82b20e773d2f110093105413d164ea6a92ae20834. 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/CA5KR0035647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5815d04371bfce37adc2d359580715872615e2f7265e0521419515d56af6b2e7. 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/CA5KR2198353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc139fc0a602c43bdabb6bb6d77060d50b2aaf29619bfe9bfba98399a0beac57. 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/AUGBT2315531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c7740f1d4ce2bd550237827e62498d868dfc87d710ebf6d552557a5c1ad28. 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/QZMHN2058495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cb3ba160fdd168f3d48c5b73d4ee370345c386145fff1c055225aa7ff490c8. 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/QZHN82109903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c32aadab1f9465babf6922cacf375b97526411ae994c316b8d14b08250b1c5. 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/QZHN32101834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d650a10e229a2deae6d9dfd199bbd69853b7d38a2745be21f0890fe95b56e7. 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/QZDA52129306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968b28438ea38934112c104c7a85f20a2e722bb464b3ab7ce41116c32bc3d292. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUBEC2077177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4430e071f36fe7c090dacfec1da108d80a1dd984377be4ae33aa8b60a11498d9. 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/QZK6L2016342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8470efa083a45abdacc3a3e80307e823064b7a790c22b5658f43bb67c1953d9c. 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/QZKDK2041690.
Designer Love (Dimatik and Colin Hennerz Remix) - Colin Hennerz & Dimatik Remix
Designer Love (Dimatik and Colin Hennerz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450cf064b5376f39a1adba2f8995fbe82d29bfced1e64ee00e045746ed6b2da. 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/AUB1F2300015.