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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a497bacb3c909b4dd13be07481987449d94ef460c9845fbe1510e80a7eb86. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0de30ab4-ced1-4610-a6ab-e2367d09900a.json and https://artists.proofprofile.net/proofs/artist/0de30ab4-ced1-4610-a6ab-e2367d09900a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf668ed5c7ea52c731b9b659b0b3a3a01aafa78a80e8a789c6e9bae54e7aa071. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USUYG1095584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dabcaff8fe61784b06c982b5885aad5f68f6d36f687bf10625bb56adedec988. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USUYG1103363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2534d90f2bbf6b71cecaf6769e022fd3c7183c3e6eb6d754f5809c73f4e6bf0e. 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/USUYG1123705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84348f7f4ce8793a8b2722adfefa87a34c9bdefe7a7b43575c08c40e4c8853a5. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USUYG1138154.
Stranger to the Pain (feat. Celly Ru & Boo Banga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244f7a6d74753f6e0354d870fc4873f7616fb9ae6199e51a982dd73c4823ac89. 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/USUYG1082610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba405107de2762f9ad9e7a800ae87919fddc6dd6f86fbfb5320f1b8710fa1476. 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/USUYG1108934.
Smoke Someone (feat. Mozzy, Celly Ru & Yase)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdea1bd5af6a5e882dda760b46eda9a688dd4ddd62e4c021123398a69ebdddd7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1100719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6777d34687199a6d04790fc7d485e3a5a2d47debbe17b967fe9a33a2ec28a725. 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/USUYG1127593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fa748cec01bc62982f3fd1389075b0827074e91bfd995239c81bdcdcb37677. 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/USUYG1127597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89165749d0473cd54ec718c162eeda9ed64b417cd6a792d2749d4091d2eff3c1. 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/USUYG1127610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca5272b1ed69ffb84e420bf818b3aa2f949ab73e01b14b5ce203ec6f56d853b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USUYG1082609.
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
Barely Know My Name (feat. Mozzy, Celly Ru, Mistah F.A.B. & Lil B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dbdff03c0a42e7faa6ecb048b667a645b317604378a11e34b523a2f7cbcc8d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USUYG1100715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc8f54a72322937413e99bc932704bf7cad85e3207c541f8d2023f24cd57e0. 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/USBAE2205125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d5bc087d0deedb3cefa65478b5bfdf270aff234aea5f97ccc0e5f5f00fd875. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USBAE1318330.