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 0xe898b1235d670a4f3ec51ea82ea73a068639ba5280f7b7e4e1460bf39f7d7773. 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/e26f906e-3ceb-4108-a1b8-731eb1ebe833.json and https://artists.proofprofile.net/proofs/artist/e26f906e-3ceb-4108-a1b8-731eb1ebe833.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 0x98c6cfba8a2f356b9ec170c569098f34fedab002b142d5817f9cdb4757f863fe. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBKQU1694906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe816ee7464287456ec4cd2db18e5038b7d1c4ee9bf55ae8eb56e6e475ce404aa. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBLV61637302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e24d98480419c25611d8be24e847dcb7ebb7035db56d88c09feda5cc7ae848. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBLV61637303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b9049d023b054ef5daa069a57bd232def0e87fe3e8b5412c4f31e67eb0453f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBLV61637304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9acf1636fd16a624c3c5bb4ec652a03ea409018ff037467fbfb2d52a2f5efa3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBKQU1795545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3823f0ed634ec0e7b38c82409037e2d30844cf84f7eb9198f3ef0c6ac471af2. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/GBKQU1795547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c0baa1b26052ecd6cafa6bb6e13ac64931390698ebf7ddeba0017b85b2a904. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CH6542421668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d61f78cef5c331dcfa350e08a505f3036e2e94512a2ae37085f48bb18def57. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH6542421669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa2c75cc1513c700a1874ef08e82a2ec6f2464b71e74850c12a3f2b1cfe9847. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH6542421670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05adb540f62625ca10a829e5bdc4ef3f729fd2bee79ffc3f036e3b3d8854d92a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6Q2596086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93755a86d76f6c9cf2aacc92a2fa3490763133851cc05f4d83e6d7ff84648e48. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6Q2596087.
Terror, Passion & Death (Slowed & Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ee8c5adb92ed000529fe06a14e35570544ea555b1bc36a9d5714010500052. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6Q2596088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720502a5a69946f3fa3e068621990f4ab582fe8940236a5ba2766a988075c333. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/QZK6Q2596089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cfd7625e12592dc5c578dba291b36b0cc589be2a27131af0ee88d39219e33. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB52542220.
Shakin' Whale - Into The Pale Abyss Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f4f25d389dab46f71ba096660780482de7e8ac50e45f195f7a7677cf936d5b. 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/GBKQU1728733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f318d952eac31c99e5686d42177886518d8006ac2824187f20563bec87e75. 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/QZ4JJ1917985.