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 0x99a30c9bd20d83869edefae08558cec72f9fb6e47820647a83d619fb84deb4bd. 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/86c76c3d-f777-4a22-89a2-c435b8edda44.json and https://artists.proofprofile.net/proofs/artist/86c76c3d-f777-4a22-89a2-c435b8edda44.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 0x3b5baef857c7ec32e982edc4cd8be563d14484d584b9ce17b6eef5bc1f5584d1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLV62202893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376385bd4338cbe718708390bc95f6a3139a9a44581e230fdbc0cdcf6fd2f05c. 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/GBACW1700835.
Hit 'Em Like This (Two Minds Project Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b800b0331744471a81d86564009944a5ed03c359519dede935d6c71e2f4760c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GBKQU2268100.
Rock My Body (with INNA & Sash!) - Olly James & Macks Wolf Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a568baf31de3d9ec1e688898feaee2026ca7487662b9158384cca2ac8ee0fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AEA2D2300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8b861323d39365918e73602718b7d6a504b04f86fc7006dcbe3f0cd6955745. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBKQU1953499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501eb6f8ff9281ad17a6d99ade38e8cbcb3732fb0dc366c13a1703c8e9d893aa. 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/GBKQU1953497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c57ff7cb11545128e2d1c8b17ce1c164c0f5f8b21148cd99e615a1328f7b52. 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/GBKQU2307288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3eaca6db09db38482b7c349260e6ba7bb7ad5259130174928ac0b0cb0909bc. 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/NLRD52264069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b75a4df552c861735b1d9e2abd901bb95f1019c6668bcc6183c9e11c7d9165d. 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/BEB682400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178c857b7b42ca17cafd5958a04762b5564a3a7c60a70fb6fc6be1336951952. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2239833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10eb671ce148936e0d7e6f28e1bda74910ee699de1a4b87f4917c2dfae7e66. 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/CA5KR2198499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe8b99a16c4e1eab9e393a414e8088eeba16a24189af0f6eaecbc5714c2e422. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2150196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0729110bef3eaa32af092d4ab51920b29f4f9ce95f039ec4e0b302bd79eaf228. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2150197.
I Don't Wanna Fall - Cally & J-Trax Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5109a76e5e99b88ae8e740756123e85504c2f7de1862ca3e1e0275f32629fe4. 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/GBKQU2150198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177f0d81916286874a210cbb67202d40c94e4c745f54808a1541761924a7b8f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLV62209178.