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 0x87a036ac5c0a18681452b6b2bd94133815f743752550a7f7a46817b0656455b7. 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/f12195b0-3842-48cf-941e-214d454ee196.json and https://artists.proofprofile.net/proofs/artist/f12195b0-3842-48cf-941e-214d454ee196.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 0xd1184e5808ee4b479afdfa1efc6aa7f63985549faa08827201a84a5da5411ecc. 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/DECY60600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f9f0a0af9f13aa0cf47e89faad46b37a4035ebe06ab75b929fe1fc8ae62515. 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/DECY60700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9babbb160d2509f42a83436aedcbba46dcf45fb75816694f4b648b2481b7a0d2. 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/DECY60600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a38a684392be6461097844bb6197dd1b3f1d5ef1e10ee8477c16515bc6480c. 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/DECY60600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ba056a4b2231b8c5ab8680865f289271b0d3f832f84bdcb16e460434e1e24a. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DECY60700004.
On the Boat (Disco Devil's Rubber Room Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f8fb6abccccf172091876019a95174761cb8aa606f1446e4596513394dafcf. 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/DECY60600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ee352b619777b8ffaf9dbcf2fe4f2cdd4c37d68e3d68bca5589b93a7f3c47. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DECY60700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32e53ab5b353747cf01b80cfd03fedde8d1ce84bb983f7dc0f14910ac2b83ac. 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/DECY60700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05d35e1572428c6f34792a8f5fa3a468958c4416c120c4b913243cf77476fc5. 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/DECY60600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b7775d369aa2cc55b97d281225925cb0324f59c620e60842271f784fc9045c. 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/DECY60600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813281cfb3a0382cdb8dd7788928b4e24f3198a6c8bb0a4ffb758bb3c5869ff. 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/DECY60700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e46f976f700a359d915dee91c95f22631fb44009a50f941c383729c1139578. 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/USCW62219214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cb482514797a3321608419c3135eaef063872145c4224f4230c4184532ef27. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCW62219215.
Mummy's Not At Home Tonight - 1983 Island Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5bad980e855895a227d2627bff7aa1063dcf37eec2c71ef46b59bc6b6ea747. 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/USCW62319217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c9fab699a11a8747ec571d5213bea08c6ae428f58780f5e0fbce788796dd30. 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/USCW62319218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34001e69b4e172457212b1bdf6ff3b532aa56157355b4724612cc3bc41a4a851. 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/USCW62319219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cb482514797a3321608419c3135eaef063872145c4224f4230c4184532ef27. 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/USCW62219215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34001e69b4e172457212b1bdf6ff3b532aa56157355b4724612cc3bc41a4a851. 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/USCW62319219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e46f976f700a359d915dee91c95f22631fb44009a50f941c383729c1139578. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USCW62219214.