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 0x4239e1036018c7f75908eae5e98be9189df8f4e11a19d9020989215972dc0c90. 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/ba212251-6c1e-4a4f-a403-cd5f06e2f23f.json and https://artists.proofprofile.net/proofs/artist/ba212251-6c1e-4a4f-a403-cd5f06e2f23f.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 0x921f24181bb19032374443792a57b910a41ce092035384655b608f4f5d1323c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZD441901273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4255a8f43b9157a19353a6c445c20bb9a1fd8e3a22e90e1775f2e94ad1c54. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZD442000777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2510703aa18ffd724912ade64160e7a422f91777aba62642f52da653433c9cc2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZN732000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9364c95efd90a97559aaa5f1ec4257c530b4b6dd48629526633b4172661760. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEV2127367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9bec5b70511e460d6c5671070e30205ebb53eaf159ad38508f5db73df959c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEV2129677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0b207c2462a7789d4dd7752ee6c065bb218a4afe63c9d4b2167fbf8df47c7. 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/QZJ842003307.
Aint Mine (feat. Lay Bankz) [Sped Up / Slowed Down]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0b207c2462a7789d4dd7752ee6c065bb218a4afe63c9d4b2167fbf8df47c7. 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/QZJ842003307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a2c14b5d570dc1074f7678a1090a592d4bf4c7a19d6ab8c3b9349df8a30459. 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/QZJ842003354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f94c765ca8de9b5ca168add02ff254095051cb18235ecbaff3093d64ec887. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZJ842003886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb70b75d93dcb7db2e0b8b13c4e842c4708d7c5f3c22f424a7ae6edf1484e75a. 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/QZJ842003914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c6bc75c25d1fd5d8cad61b2bda02071d242f025dd3aae3c98d1f6c963d96c8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZJ842004028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb443d4126b8b06948d36ae6985c7e477ade432465f8a5ae5cc7f5a80515efe59. 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/QZJ842004049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b31820c465f70d140aa45b887fde694994fafa02f94636791adc1b076aaaa8. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZJ842404585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f2d7550e9a94ce37582eb9dd698462f36d306394e331636596e3154c5a4528. 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/QZJ842404581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7148b5824e54273aabd3581ffccf384a6aae063e194ca7e6f24c0c787ccfed2. 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/QZJ842004104.