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 0x0235df717ea3e65a745c748b2eeb61df58e33db6dae7fcd8f77904e8c1038edb. 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/d1ff832c-fa5e-4531-98ea-4cb0c4693e64.json and https://artists.proofprofile.net/proofs/artist/d1ff832c-fa5e-4531-98ea-4cb0c4693e64.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 0x9b14422151da4214b8f843b28df4c9d66db60a2e2584302891dfd8fa28e7f52b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBKQU1650086.
Kann Dich Heilen - Middle Sky Boom Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3444fc436d5547ff8c2c92a0ec407ea473cf43c336b7c4c57e144c238ad062c1. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBLV61913285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3975750dc5428b77adde60fe1e85b1731500b3b583cb979c5cb7412b0f50c7a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GBKQU2050146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5925d04751800518b10be461087243f7e3dcf3d29483fad53b016f420ef9096b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/MXF012100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085ecf7d8e524bcc9c53b410146ab3aac86e51423eed863cc5e789b82a69ed9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLV62201188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6698fa794382d108208efd33885cc85caf4b2b4aeaee24ee593eefa6639489. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBLV62201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b50ce03d5d12d50f415e59179172ee7889d9bdc4d7f385a40fef8174dc78f0. 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/GXBNP2411190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8407292f057d3f898c73b79a4df8cc5eb45c6e247bb1f66ddba53eaa1944c14. 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/GBLV62418107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fcf6607ae5ba8a2ada4fe1e4818c0a70146cbf354040d38a8235139e678f10. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMHP2513470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0ccbd4d77ab8b66f1682e5e7bb265aeebe0ad0bf094e519d20b503eb3a3646. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWV32557224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ed61173c54691a9268742ddb33091583e079f7da53da13652a5fcb1fa080d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBKQU2576694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ae18066a71d1cbdc6323597c6f1cfe01ed9e3359490300307056bcd698e804. 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/GBKQU2576695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195423b53bd464855fc86ad78b9d494cfd7e37ebbf305e64cbe38d35377f43a9. 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/GBKQU1744724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d0beb9c7e7280448388f176bbd2de1db15e14aa3162c99880308231610ed88. 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/USLZJ1887711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76e89733f61a4fc71826bf8d5c1af50df22971fe0eeb5f38829b269cbbac1b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBLV61909709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a8208e207cbef1013d4f4af985666f04740bf2d2b95220002c74b677c95d52. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z2234224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255207076f944100b54c6d9c34da761e7435768c824e8db0968227ec642df3a8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2234225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5116eb172699fd2c29e4e409491826e5fd80135a71a1ba610a0057e1269562. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US83Z2234222.