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 0xfa11db46b7835ef7405b6fcbcf55fd9812ccb28f4f545b67279fe44f6ab1bacd. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/105182ea-4b0d-4968-92c6-dbb6b299c6de.json and https://artists.proofprofile.net/proofs/artist/105182ea-4b0d-4968-92c6-dbb6b299c6de.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 0x34bc4bd6f19c9eb3654663af5511b287eef540cfcd21e5f3667c2c228e23a1b3. 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/BXWOW2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071a89dcab9fcba541814fe40afa37d7ffd3b6a9fce7ecad6778d0df030ce687. 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/BCK6O2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4bf8d0b1af98c8215de27847d228c8491d0c2cc8fcaddcb95b4a0242fa3dc. 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/BC7WQ2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bc4bd6f19c9eb3654663af5511b287eef540cfcd21e5f3667c2c228e23a1b3. 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/BXWOW2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226614f913009dca2d1e23f4a46a5de6cd4476ab826b8be7be12559dcb6e4a94. 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/BXWOW2200031.
Mentira Que Virou Paixão / Duas Vidas, Dois Amores - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b85d6d99094d888af020ec6e877663bb19ddc6a6266d189bf2b95d9fe98c46. 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/BXWOW2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d61304884cb1bccf25376f8a010ef2510cf1dbde634c7fbd5b6b3c343c1ac1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BXWOW2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0283b5e9aa7dabb383d7924e50b16ce1710b4aaec2874e3ed48d1eec00dab93. 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/BXWOW2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab7813f4a30b7db7c69aee1fa98193d4fa52ce2d20af4e1e060b1f310c7d676. 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/BXWOW2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1a2fb20fb729ed88769d9ebea8107a2179deb79a5902da444f697718f70fda. 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/BXWOW2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a0d01a9911fc1575e891416b15bc9982a667566fedde896116faf046ff1ef5. 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/BXWOW2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754b668d5f1c2271c0ffb92dcc8bd92c8c76d16131c3b56d9a2874b7953013a0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXWOW2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0087567f072d8aaaf22eb493b7bcfd82795cbbb36debd4c203cc6409dc41c2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXWOW2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226614f913009dca2d1e23f4a46a5de6cd4476ab826b8be7be12559dcb6e4a94. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/BXWOW2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b17c4cd8456bb52cda1fa385548455da43999ec03aad6e8254b79c751ef04a. 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/BXWOW2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebb37040eb41f6e36a8237da78f6595d8b65fc2138655ead92e3317f1b155bc. 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/BXWOW2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226614f913009dca2d1e23f4a46a5de6cd4476ab826b8be7be12559dcb6e4a94. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXWOW2200031.