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 0xe92ab3874043496c4cfd961a8920a585037392ccc6d35c0838c12d7a25e92bc9. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f1a3e29-3023-496f-90b2-5e8a05df5f7c.json and https://artists.proofprofile.net/proofs/artist/4f1a3e29-3023-496f-90b2-5e8a05df5f7c.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 0x306b8e99938e5308104a4f02c387341c69081481ad29d1fb9803da079cf6ec0c. 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/DEA312400453.
Distant Planet (Carl Clarks x Tom Franke Remix)
Distant Planet (Carl Clarks X Tom Franke Remix Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ac1191c7ab4084d678d220f277e7e352451dec7da60e42a6b82b8ba93a33da. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEA312400390.
Distant Planet (When You're Coming Back)
Distant Planet (when You're Coming Back)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971820d6eac7659c2640d86cf2fbaf140e9f08eacd9aaba5c0fb3571a9115df. 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/DEA312301071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53e856e7fab769831218cc96dec79eada1bf557b6c31257ebfb020eb2301c54. 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/DEA312300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f67625ad046895d22de98e6dd510f6529f09b4c3b9a10198fa4d26b410eb9d. 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/DEA312300414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96bb37eaddf0de74b6cdfada869e8fbdcc96be5bee60913c954854521a60aa2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEA310908494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222c4d5b696c82a3679cdf363ba6cbdfdde1f4d271c1d4682865fb2a2e8167d2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEA310908495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634f2d79e3b259f2746a09f2ee81db8912fc52ba59ee6a0661b0079f3be9c43a. 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/DEA310908358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320e616d6c9a2e30200e8483ef523439471cf97fc53d8f6da55f89313b28e2dd. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEA310908567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c173d5be3007c8fb33b581630c9aa05b43457d2f3da06b2106c8f889e8798f7. 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/DEA310908146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f21f0e1892280c576176dd9d330e89fb59f0ffaad8deda086bf21eee179aeb6. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEA310908147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076063238293c4b6a4f4d825f0e26459dfb5ba6cbec49be996fc42b17263562. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEA310908148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf2d7abed9ea753f42948e3b7b8c5254399be0a67061e7e7f6cc2a1b26b8057. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEA310908447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e23136c6e60e9563aee40365849dd264210f2d104e41a240ebeb5a23da7c4ee. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA310908252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14994714c4c765852bf8ed97942fd8c757723a24df56bea966359041d7937073. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEA310908254.