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 0x8c507ce94987f20befef62b793f6e9b0a11b3ba81fea9938d06ab84ee5a3b853. 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/e7a62855-a5c4-40f2-ad8f-f6b948ee59cd.json and https://artists.proofprofile.net/proofs/artist/e7a62855-a5c4-40f2-ad8f-f6b948ee59cd.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 0x8554e2cd3000f5f57c24ea11be35da18d426a477b9afb008da34028617f2d519. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USYF71100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7338f9760d754f1df53c8cb67e14b7e6266e6bdfbe035af2fa6ec5a5269ba. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USYF71400023.
Dark & Stormy Night - Tronik Youth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f42c1f9e253ecfb0ebf62ecdf2aae9a12b3c6f84a0563a940a269291a6d33. 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/GBLV61719116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87caa91a87a5288296149d97f95b3e9f970383d14a873e8b3e92dd99fd4354bc. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USYF71800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d7d88d886e8e9513c6541c561406b04fd9c4d832bb07fbf53f059d95dc7a92. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKQU2087244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e496528e651b4bf32b05ba8a12521817e7e16da7c4290a15b2031694a5b31. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GBKQU2244768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af5db2b736c27c8d7d709c6d748fa27700828c10aa15f454202d13b9f43713. 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/GBKQU2244770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33b7d58477a25daf5f9a6240811dd55c61e3afb47757a93f264943828d7122f. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/GBKQU2488817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5695e97bd28b6e6dfee97fb7be78e9e7b2cce696f431efdd35ffeccc837b8ca5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEG932500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfcf2fff2a822f6f927ffcb9419c0b37f98ec671cc1e1d55e20098a3bbe043d. 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/DEG932500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611cddd82345ce81eddb88e9658871abcf2c5aeae78bfad2ecc1b788a1abe51. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEG932500460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0f6844f7181e3ff31821de71391bf5270ca5273b9b234fd2923b642c6f075. 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/GBKQU2598683.
Fire In My Head (feat. Dana Hom) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2543a8c887cebd1c57b71b5f5fa3032f70d6bad7a557af60c97f1b357bf69f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBHFW1700102.
FG Chill Out #2 - The Deep House & Lounge Music Must Have Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b036b245d1b22f7deb11118509bbca482da870bb82aaeb454b4594dcfefb71b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USYF71800043.
Global Underground: Nubreed 10 - Oliver Schories/Unmixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb101fbd6d5f36c82ceff9eb3f659fb011e58f8af2fb2605c42caa30c4d51c586. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEL021770001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223dddc1536e3317c439606ba258b80950b23386dea570c505f4f6d6f5d48760. 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/GBKQU2098546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ae675fe2e9796a270cda59daeb500fd5814b08d6c1fb878cb3d2e7078bc83. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBLV61707282.