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 0x2d925b4c351a54adb96dc478c1db33f67eec524f76245140f1be5346f5660640. 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/09c1f3a3-56bc-4c1c-971e-012a64088f0a.json and https://artists.proofprofile.net/proofs/artist/09c1f3a3-56bc-4c1c-971e-012a64088f0a.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 0x7702f118fbba6285c339e3ec01cd8dbac1d08fcec66e6003fd01b49a9d28e932. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ITBVO2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1004a0f6abd13fd8e377d2ca3c570ecfb301f1b7e755588a00cf90fcdf5e04. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITBVO2300247.
New York State Of House: Sunset Edition, Vol. 1 (Mixed By Francis Mercier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae962299ab96bef2b4549a35d152c8304f04eb8928a83395949241fe660dbdd8. 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/USLZJ2129547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e01f994860eedab36a33f55aa31b8074880a434534055132a3885192f2feb42. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM6MZ2440058.
Mars In My Room - Kreative Nativez Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066c9902c57795faee926433c40ca9a3a207589817bbfe94b08c0598705b139a. 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/GBKQU2175067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96773582cb1fb3a76c348af9a8924a89fdce4d401b6386e1f27a2d97c0abb98b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USUS12200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b258a735e6c176dec74fa64c56285933c9f9025d654b83febce1d6c944ac92. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZTRX2495025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89487a29247c7df24496f1d34ca785adb94e4e336be7532f9060138aa7d875fd. 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/QZWDD2420839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f7a65f93a3df03520dac333d7d8810306f58effdb68ed5c09853612c92525c. 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/USA672200133.
SINNER: Love, Heartbreak & Hating It Everafter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93e85cc4536d61655831f0c906cdb06eda905781f0b426c11943549d539cf5. 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/QZES52196362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1004a0f6abd13fd8e377d2ca3c570ecfb301f1b7e755588a00cf90fcdf5e04. 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/ITBVO2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62de0191523575cce1e4bd22018cee90d288667d3335cc19d97cac49917a67e. 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/QZU7C2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f0880f84f3252cb8389240dcbea7e88185e24f81dbca0103a7c23d34d6fc9. 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/ITBVO2200182.
Zolalela - Sebastien Dutch vs Kreative Nativez Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747ddb48694d1e9ca10a64178955b187f01ff7e8415e6326d40544328821a160. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM4TW2018766.