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 0x0cb0532116e6af8593d07667161de851e2c91e02b3f67624c5a6a448565c18a4. 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/1a7e481b-7d4f-4fd7-a657-3f2e175d0cf1.json and https://artists.proofprofile.net/proofs/artist/1a7e481b-7d4f-4fd7-a657-3f2e175d0cf1.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 0xccf9cacb6333556de46b4f076138a9121c9519a85bd2a188dea650371841a79a. 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/QM4TX1864465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda56470d682721ab8695b21ec384eab1cc90670546d8c91e267541551ef368d5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6Q2096680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf926d808e50b4e3fd7dc584c2ce230dc347e341221182e175b60e8d9ef1b4b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USLZJ2069476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf68efb0c9bb2b9e1a620b16cc094d2b0ec6ea18b90b75658fb13d464f33c592. Chain 2 (Bitcoin): anchored in block 957822 (2026-07-13T08:02:12Z), 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/NLT2H2100513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f177ed02fa8ab2e24501c87e8fd3d97589b7a7f40bf94b9e3f7b6e6490a79b2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USANG2472467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1956ac41af547c3038822113113329c0253e57d4771ca9515af0795b0d73e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2443794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8934a9f6a291a415e190f61e4f6037185d3cac8e06202fdb3f20833370854d94. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USQX92104373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df0ebffbafbf80f3ed19f4cc0b0dc373da62db1fcb61ad51e2b8fd6a786804. 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/QM24S1815660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7e55caf4336c8164bcb427ebc2ea618099461e05f6b86aacdcb2eb70e009a4. 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/QMUY41900025.
Feels Right (I Love It) [Sundress Season]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263702e95662c07532c21493300b35a4db7e4f6c383abc5a9a84394495178de. 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/QZZ4J2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263702e95662c07532c21493300b35a4db7e4f6c383abc5a9a84394495178de. 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/QZZ4J2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56cb99e16e506b3274ffcffa2870ac0a0202e80ec6387020417e0a5d020194. 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/USA2P2400426.
Hate Me (feat. Billy Lockett) - MC4D Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6baad5e9b8086ad2c9df8c254d77795d7999a839622c69abc56091ed5464c13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZUCN2200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd07b14f12165ce13808fd224e20544d24be376d9d313c791cfe191333bbfe3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USAT22214530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd07b14f12165ce13808fd224e20544d24be376d9d313c791cfe191333bbfe3. 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/USAT22214530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ac85fd1a9f9e64d009a42a181750cf552b96b68e5ff31bea5e1a9e50a97c9. 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/QM24S1925819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff145a40662d32ba2a7eff74bfc35744e7367d67fed14667978715c4779be67. 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/DEE861901365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78b1763dbc05438a48bdbcfc3b755355efb8997d07c6b64b9a255fa02008eca. 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/QZES72014341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47235c0afbd7d00bf8c71d9005b8b4ad66b75f7b9367f74ebb3595510c2a287f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US39N1800150.
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 0x4745619cac84506b2981649e8d7c71bf056804bddab99d4aeb5845a2c351851f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMRSZ1801232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9781ff3962d1bca296c77d551f754127b5b460b1919d8cf4d352b50e5a8bde2. 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/USA5W1900045.