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 0x9447bc7001bd2ce3d3ab1807d777a6cbf62a905ca9a68037d587fd4d5d411fcb. 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/8851a391-ca1c-43d5-a285-36451b9af1fc.json and https://artists.proofprofile.net/proofs/artist/8851a391-ca1c-43d5-a285-36451b9af1fc.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 0x195185074b6a7eb4b66bea3fbebb07c472ec34e7c291bd29d058deb4f28c121e. 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/GBKPL1136109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e310e9719abf7d4371ba8e5355b14060223af97b80fb4b03bef718221ecb13. 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/GBKPL1153652.
I Love The Night - Raw Artistic Soul Vocal Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e588d410b9a57fd533f46192d009ce8a737c2dbd2a5f3bba64ffe6111183db4. 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/GBKPL1136113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091d9fff831e126495075a173e46c1f137699e9a180efbee752dc2c559f10cc5. 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/GBKPL1136110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc674988d02fb702ae31b0a1d5c8c930356669b27841447773bffe654bc16d28. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKPL1136111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5143585dfc6c80164a6d22a0f9471baea4b53f5ac127b28bb42e93e2a71cde. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US4DK0400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3425e2d78a28a4486f67e5b834166a1573624b23456d2e4955dc8faa0b1f6467. 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/US4DK0400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fa3d49e74f51c3d35c967c8c562e6e6bf2687ddf63ddc5c33e8e7328e31d16. 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/DEY160904101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b02f0fce78ba3d444043f1d15997d3e053e79f59abceeba462d3abb9adaf0. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEY160904103.
Hard Time for Lovers - Soulistic Music Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b1fae44a7db476f4d110eaeb41f62dbe0eac7c539de7ea9aaf89a7ecfbb97. 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/DEY160904105.
Hard Time for Lovers - Kiko Navarro Musthavesoul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf13fa6da4c94dbf49f3137b2928018d9514d16005b4746e57d662e00af1e0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEY160904107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc5186f02fa1c6aa50122b496e034d093a3b29977cce945d8b6e2e6103bce6. 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/DEY160904102.
Hard Time for Lovers - Ralf Gum Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b000752d54df5b4215cf389f0ad2638005605f292dd4c43ee0f2a95b0d7f9. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEY160904104.
Hard Time for Lovers - Kiko Navarro Musthavesoul Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311fe8477e0cd92a386fede556b658d15a0670af3fd22cad528b453eca0187a2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEY160904108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22fb20f70bb8f29d67ea2fe2f06d773669f8389d24875e881b834bd64ad6a94. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBNYT1300008.