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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430980201e6c096d184549ac0365c91c2b4d64c7f0053c7153b37b30640bea40. 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/2c190d80-14c8-4fbb-a0ee-b0e425e1688d.json and https://artists.proofprofile.net/proofs/artist/2c190d80-14c8-4fbb-a0ee-b0e425e1688d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fa24852909698fa25c88751ab50581da54dc228d33363dbaf22f473679c33a. 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/GBKQU2435897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e77d8fc2d38c117fb6feae3799ef9f6aded22bc3a84ae9b01abc4f8b36f8267. 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/GBKQU2435898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd16340e14f2acd6d3866c59362cf405183d716237ec981c6a6a67ba0a4576. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZN82105119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703458107effcd83e86715f96240bfa7378e7bfaece3574a8bc3cd194e4fc11. 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/US83Z2406222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d713cab4cdf238f9be65977aaa3027144439d1a229636c9f79880a0c64ecef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2463953.
Dynamite - Thodoris Triantafillou Bounce Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd9650ad0700be186f42cbe8ee0add647f3e5fc4e92897ac7d8ca866479f759. 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/US83Z2333479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e21a30f0d769f2b4a33fd7bada918f8a6c9a8b9933c6b591dc3e368774cace. 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/US83Z2313058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75da264e1167afe2e29e1d0dbb039357454ff47310838b60a8574b1494bed10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DK4P32304401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1141e410e1b7041ef253f8a17d06ffef7d7d26df6c1d9c93840ec3e97729c40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DK4P32304204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37550aa1c9ead31a96865bc7b65cc58811970348615017c9cbe47bb05bb46bd1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DK4P32304202.
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 0xadfe8d05aedb3ac37521bc1e0ae21385ddf2abdadc3d41c8f424fd06125fd6d1. 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/US83Z2241424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ce339930944685d4918abc8efd865b0dd11d53e13e72f8c4240932636c580. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z2233619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424254a565c640713bf62391bd3567a8ca99c249edb348e948ef7a7e6937954c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2233620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84813aca6703540ba97dcba161d1610e967583e65a8b911e5ea2bf7a03bbb9b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US83Z2233621.
Kids (Thodoris Triantafillou & Mångata Projekt Remix)
Kids - Thodoris Triantafillou & Mångata Projekt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae543e45a7322064c12615b52958e0e2bc17d0d243b77c7718bc12b31462000. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM12300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b4a507b2945f61b915aae3e62edde2c269db81b37bc7d843898c19e73eb060. 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/US83Z2225085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae23ee39ec863c6fb4befe5278d1e886832c3c7d0ddb510009add480f3afa55. 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/US83Z2225086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf1d9ce8e363c13b7bad30d2035c2aa8dea9e1faedb7e7971b86308c90fdb09. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US83Z2225087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a808d7d610125cb296d70a03be7f689750ba7ac8b6cf1fb1a0de4b0068635. 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/GBLV62103099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f2afd50462d0ff0ce67f6d18a44571a91d1c1310d3934a9d6961f279299f1e. 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/GBLV62103100.
Tipi: ReThink {Part III: Thodoris Triantafillou Vocal Edition}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d0680af23d8ebcd067b5cc6f8483f1bfcf993b2f6b6492d795cc0c85e49408. 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/US83Z1904099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfaf5d7cc899832926aa00b99f324b776f0b7418b3183b4d77d40642d60869b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/US83Z1904101.
Window to Earth {Thodoris Triantafillou Remix}
Contact - Innellea's First Acid Accident Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa759a2e357800f85c4a7c6ceaaf7a0e2f5ba075efd5e27cffacfd5c3ec126d7. 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/FR59R1869552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2506ca092b33453ed280d26e38fb4e31e8b4d43fdef44294c601faaa7db8d046. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITV260900549.
Overdrive - Thodoris Triantafillou Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de2e5758e771d0ce0e5834711166744f50ad9356f66814a14254cf3704062a7. 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/NLRD52200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeef9ce289118a3615e23f8c95ec9d029dda3c4ccaada6b6c3a083f6046088b. 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/GBKQU1793685.