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 0x3470e8070d30597e4193e5918cdf68e889b7ce18c2004b95d644d250a3d2bad8. 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/ac505093-2884-4d08-9539-0ef1ff941c6d.json and https://artists.proofprofile.net/proofs/artist/ac505093-2884-4d08-9539-0ef1ff941c6d.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 0x0f79c56b907d319d8da32e74f1309b22414b3f60e8a2a21c29906a06ecf725b1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZHN52287486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001875d310fa93eb32fa482636f4f4581bdcf3f0298f15f5128c39c4b48986a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZHN52287487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea47daf0d25f3def007eaee71e11f09bd1abdec3035459c654f86727e547534. 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/QZHN52287488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fb71158defc79d996f54e49b72edc5af4250683d5cb3cdf48038f2e03c7c10. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72260176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8891982432382798ccafde7ccd4986fd222937a27238c3dc30afda0101096e9. 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/QZK6G2249330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1847db67155b0e7d8fe365a170acd83398be4f94c2c89ac884434c0e5203215b. 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/QZDA62306994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115741202e14c7a5a2158b7b54c3704676000f6bf1bc28253bf5cd18df9450cf. 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/QZNWR2359277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db44bfad010baa0df27c0cbb55d99a820e096a6ef0790a70e71570ef17ed3d2. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNWR2359278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0d96639cdf8dcde126e427b8c8f4b6929906afaeb499ea43bf98f0b691d67c. 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/QZTB52352150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261602226b046ed05f289e44ad7181f22d9f4b6a84deac3f14f5b463ec06b3c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFF2300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b642da3a63b6dc8da3623177acf2ff674ce4f8e8a88680775bc918b31adaa9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZWFF2300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9593a9237eac8e6a105b792fc57e4bc97a189fc43a6b5cf029a6a46eb8900927. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFF2300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5975a09e8af54ff6963307d97fc31535c094333b1d8e27aff2c59cbef3e30529. 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/QZHN42427080.
Sacrifice A Pretty Girls Tears (KNTRLVRLST Remix)
Sacrifice A Pretty Girls Tears - KNTRLVRLST Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66a1c89c00da2230638261bb4e937e3dd3070756ded3b92d20a01ee3bef1ac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6F2412748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cb4e36953a27e57b273a80f69c1a2d20f4c648606641e51536f2c9c0d0f492. 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/QZS632447004.