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 0x66d7c1f5d5ca27a597dc52ba1aeafcf884039e87a17956990c2ca3ce6ac56a3e. 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/3a641203-de01-4188-82d3-ed87cd5a9a38.json and https://artists.proofprofile.net/proofs/artist/3a641203-de01-4188-82d3-ed87cd5a9a38.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 0xcc320a43d48992c6f231731b241c1102c6d32f14d1a5f1442742ea826a67d620. 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/GBKQU1625884.
True Tonight - The Distance | Riddick Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792ddc43bec871f65a3fd3da296aeda2b504b49ffb6f4edca8402041d09adab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU1625887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed4994ddbc133e50a7ba2fd7d8c2cd8cc2fa39f8cf014d77607fbe773bcd3f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKQU1625893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4406c40d21abb9019c7027830f8c019825fd98fa48a0b10d4baacda97ce61. 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/GBLV61703139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45140de5a4b87dd8afddcea7acd889eba7d551f2e19b79d267d259da6efda36c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/US83Z1797931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f739c7e975f543c02d499037ae134e4c70d1f835ddfb1e0e6aa4fa93f7ea9. 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/GBKQU1853026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383f33b8e62ffcdd376c065a831a27205c4f68ab9c2fd3db1267a6ad9de3ab80. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKQU2028007.
Mia - Ian Tosel & Arthur M Radio Mix - Exclusive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aebf7a4fa1357be99115eead6f6a7e44741d83616963e1941b6560599c5a40. 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/DEHG52000044.
Mia - Ian Tosel & Arthur M Mix - Exclusive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159fe864aff5862f73d42169ce49b90b2918c71420b584a4456b44b473a8d0cf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEHG52000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9dc8313a03ca654fb0e5d497d91fcce2340b2a56c47b2a93bba92dfd588680. 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/US83Z2230669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67157207ed082222d345fb93bd239c7fc79ec294efd5b1eca9ab938348c30687. 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/NLT2H2201022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b87e0e5d07158c91d17904368d832a94415c071f73b74554a9ffeb79d03565f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBEH42010253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2793fbbe95a017c46047c3f958d30f978722534a68851cbf9d851cff87cefc. 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/GBENT1330186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8c737142773b0a460b5eb77e4f091e7ab391fcb55e108b5cc8957403a6f7cd. 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/GBENT1330187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778ace48a3f78583b9be18878a5f02cfcfc3ffa8120fe2ec5457c6489780de3d. 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/GBENT1330188.
Crush - Erdinc Erdogdu & Ali Arsan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0910ca8d70589f6e4e4b1574d80986f431d88abbdacea1ecc4c9b7a874c63. 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/GBENT1330189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e8cc4e7a737361b95200949f426a8779ea15131f01d8e1e5a1c6d080da2b71. 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/GBENT1330190.