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 0x65625988c250979b20915b30dffb8c2a3b2c65a728422ec631cb7b8f7a4b17a5. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f478629a-39f6-4701-bd87-142344166f87.json and https://artists.proofprofile.net/proofs/artist/f478629a-39f6-4701-bd87-142344166f87.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 0x66871db42a33809a8c1378f2e2f15408f78a5ed38578761600b9c9a563db0a01. 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/GBKQU2402828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4c14ff2039d7b00c4caa5a1346d603c94fc68855f9fd87ccfd80d872d33a01. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEKB72055137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e41d76153e47c2a142086233b7fddd408082b0050bafc7955acaee20b247aae. 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/NLCK41070407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b055259d8dfe1ad724372c677649756d3ec9bfebbdd8c67f7f0c8e62d3706c. 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/DEKB72050418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997c9a145e18b60352099bda5bcab6c8723d7fbeeb0f9b448bff5bb9fe7cf5e. 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/DEAR41977339.
Headnoise 2k22: Even Harder, Louder & Faster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd275b3c139615fc9a5efd49511961b40a524f0f4073a3607fe95f2f08478b32. 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/DE1O62477112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c39d1ab5ede735e974062168fb065632ecc526dee4eb949543c156c810be2f. 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/DE1O62477056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199bf275767e7369d108d23b77eef1bda0657ab36d63b2ba16c84ee4bdac06a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DE1O62477006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6693fa2f3c2980571e882d21f0bab08dd5657632ea4915a2f69723cea88601c7. 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/NLCK42419228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0225dc3fa53a3a4fac6a7c070d556fdb857d1fb95eada0f34b52f92c47d04e85. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLCK42419229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d08d44985f29c4fbbd53907d9e473e079f1f1f939ee8900c43caf7f69cc25b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLCK42419230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0ea106c0031350bebd62502b8dafd2f79113864a878fee62bc9dd91c85ae29. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/QZTB72455944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619a1068268a5e26b88d0c0e66dc557a5aa77e7f814739f920fc42c517ab4718. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZTB72455948.
Hardtechno Producido por Djs De Hardtechno
It's Like That RUN DMC & Jason Nevins - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e9d6d9c174f4a13ddc03cefcb4963334525fb26ab238335f8de430cd53ba3. 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/DEKB72082639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2362fe44182ff9aaa526864b100dd84ff380232df93fda33ee6765bc79bb3a. 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/DEKB71624129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a59561663e69493c1876a5436656b23eeeab4bb23683d46fb591900bcb88e8e. 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/DEKB71628700.