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 0x304b1af2c3e78cfc7a242eda241fdd5aaa69502a5242028d701df97b6b36f9bb. 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/cae56ddb-8d1d-4384-8ec9-a005647cda3d.json and https://artists.proofprofile.net/proofs/artist/cae56ddb-8d1d-4384-8ec9-a005647cda3d.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 0x41321519cdbdbf885541230468cf4e1ff388e4fc841ddea84d0bad68cc9d450a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEE860001118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6783339728f0ddf57337e4edad8168a86e430df5d45cee403337598ab5deea. 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/DEE860100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d5af907c9cb2825170dfdbd92e23c50c2b9effc88cd369f7f72a82492e4a0d. 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/DEE860100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef36005bd129b164f1c8b8391d7828a185b8f02907241fa434b36e11bc3d833. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEE860100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61d0f554b086adaeb45a940ed3652919c112f52e2e6a56a6bbad579fc91fd8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEE860100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d714280ccab237fb819cf0cd5af0aec5760d2f52a7278cbb3c63ee567bec8d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEE860200905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e828c869628d7cda661eddb0c3343c7e3a100bf837885630a93e8789139d13. 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/DEE860200991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ff5d98ec15021b0b3065787242cd63d29ca716f1f0bed5b4c116b954f2c43. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEUM71103688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793038b82e04f3250a67a36e155c25ae6157f7a6b88eb7aecadc92b7422209e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEUM71200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da393cd506a622cd6fffd6424cd35ca35bc807bfabfccff5eec767475de2c56. 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/DEBL60691871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6a3ae6f0e2f3eb54fb867b7e0ea21e6e763929a17c4af21e92abdaac2ea01. 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/DECY51224074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5baec3df38f5da01958205d7cf894ed180e8cb0df070dcb21b3d4950bc1c535. 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/DEE860001466.
Bar Lounge Classics - Latin Lounge Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5baec3df38f5da01958205d7cf894ed180e8cb0df070dcb21b3d4950bc1c535. 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/DEE860001466.
Wicked! (20 Years Of Hardcore Expanded Edition / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cdbca896212e4b164a9a0e8f136100cda2fe8e093a81d86018d07f436b6d4a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEN061300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f2574427cd5bbc0a4c882b0b6c31be719b57ab8eecde99d51ad6114ca025d4. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEZR22300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6783339728f0ddf57337e4edad8168a86e430df5d45cee403337598ab5deea. 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/DEE860100023.