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 0x6b18eb419015555060b32b305ccf34b54796a8a5ee97f174f2e220441a6705bc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57a905f7-dea1-41a5-bd2a-8e74340602fa.json and https://artists.proofprofile.net/proofs/artist/57a905f7-dea1-41a5-bd2a-8e74340602fa.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 0x6965dba0ad399780d71be6997617b92898ca9ddf25b2d8285d465f41926a1cc4. 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/ZABKR2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc39ffcf7ab64e9b2c2dfdeccfd7a0d6d7a2bb7e47fb288a5c235d0e98261ea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZABKR2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748e2bc78cd0153efb3ceb693dc57d6c201d194594aa4ca1bf40e7625dbceb8a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ZABKR2200026.
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 0xe84e385aa89d164686ef24040eed5f09b2cc7421fae743dd57adca9c0ffedb3b. 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/ZABKR2200027.
Shintsha (feat. Neecky Matipa) - 3 Step Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4172e44a3d261f75192c912ff4ad2165a3caaeb38419bb0f958e03778b5bdfd0. 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/DEY472478311.
A Son Of Carpenter (Part. 2) [feat. Black Tyga]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6df7f5be58579c7c7ab25b24825a3fa37a52827453855bb1c373e877b27384. 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/ZA56E2416993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76403a9ef2a1b8ee92f7bbdf3d89a6af3a63b55636b70af2cd9baa72682b5659. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZA56E2416494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ef300fc16bcf46094e0fa8dd908ce440cb08e2be5c473d066c9625dfbd7ad. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZWDD2417330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee4d11d0e67e0558239142c1baaaa2e735866690c285bce39e6e94cb6d38ea1. 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/QZWDD2417340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504b485811485b1b47236826534b74e83923f9aaaea29b31e594fa85ce3a89b2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEY472475640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc404a2fbf615846c8fa68cee0a85c0ab89845b2ad5bf499b5c2f7d9b5178fe1. 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/ZABKR2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572cebfbb8cfdf2297c7616e39c104d3cd8cc1c846ff0209642fec39aeb1863. 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/ZA56E2415636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde642d006fb7eed60d370c870181bcdbac69b3ccc5606d2755f1ced6375ae18. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZA56E2415635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1479af2e0e982778f9fb0ef0956ee6775f6eeac152003df6e063afc590aad0c8. 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/ZABKR2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0fda9534f29944c7057855306b4595d66a55e5afe5e47c2e927766e1e3237. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZA56E2315470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7278b77739c1728dbc482dccb545a410a782348f2c30095e97f8ff2f98261701. 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/ZA56E2315122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86abc91a4aad8d067bbf5724e84f33d8536fd431761f70d6babb4eb6ac71fd59. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZABKR2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6974d4ce4a4eb98ed2a5eb919284d713a131242552cc138ac9b2de4fc3e94e3. 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/ZABKR2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f098f4eb6a27e707fbe5a12e7c5359f769c2675fee96fbebf4f98c6902892da. 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/ZABKR2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86abc91a4aad8d067bbf5724e84f33d8536fd431761f70d6babb4eb6ac71fd59. 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/ZABKR2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6974d4ce4a4eb98ed2a5eb919284d713a131242552cc138ac9b2de4fc3e94e3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZABKR2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4048b8390021d6d9a253a4408b4f0f9c441f44651667743f31e40e445123a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZABKR2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0bdbc99437df206babee7480b0200845aea95155394ed255d554cac874d7a2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ZABKR2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4e7af68e430d193143e833051426bcd428398108ae888300e53282b82d1e5a. 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/ZABKR2100003.