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 0xf04f2968b075e8eb5705841a5485132ebc0198524a61570e367130e52ee53fcb. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7da539ec-7f13-4ea0-ba6b-f5f03260e125.json and https://artists.proofprofile.net/proofs/artist/7da539ec-7f13-4ea0-ba6b-f5f03260e125.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 0x2fb03590422853607ff621e83206c8ce4a78be97e89c855ba8adb40f7142a2a8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BEB681200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4523bb2133eb2fda5b4cd66b3470da7eb90baa37c4a0ff2705455e9daf4f21be. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BEB681300415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd649e7cd4483045e726fed1e52b2e633b97cdce57f1a1b3e7cef3530b973d. 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/BEB681400518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0103fb09486c4a23dda586374966109601f321dffa7e5f8c85020dfee07716d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BEB681400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda9f61b21c618dbd878252cc25ffe33d8a6dff2662aa3c46f4ec570dd0b483. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BEB681400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd056089b753b7bae9ac3de71561a8d86007338c43893ce1487f4faa71809d761. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BEB681600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc40e9ba05fe26fbf6dc388b76904437f92d61604774c300392ab0a9ea601a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BEB681600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb078a09e1834c699b702984fdd309818b2bbd6a017907538b6077b7e4b4a929. 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/BEB681200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f5b0debc21c983a534cd965a64dd04bef7b24b91227f69791fd5e2e17c931. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/NLC201200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659572abdcf44cd5291211f9aecf6eaf08874de8bb3f7c197f249de33edf15aa. 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/NLC201300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4095ddbd9f1f8bee6d68fe113a2096a33bc75ed5f1416c8bb4fbb9aebcfc88. 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/BEB681300365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230fedd2f8427d3e47aba7055e35fedeb8cdceb7f8cbeae912b732a987e19ae6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLS241400940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149a577cccc2e05f79db65979297e490b1341c3cdd73ff0538fe52acc4ecc18f. 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/CA6D21000273.
Hard Bass 2012 Mixed by The Pitcher, Luna, Frontliner and Chris One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f5b0debc21c983a534cd965a64dd04bef7b24b91227f69791fd5e2e17c931. 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/NLC201200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a614abb2d33014cfc39eff8e238f8083d0f0dc8bab4c2d8a1a9622171bbbc0e. 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/BEB681100185.