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 0x19ba1cb19604d38c34f6055876105988916129701cf3fb0f16a3155a4e236007. 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/c76b6563-0385-43b4-a7d2-4a723a62ef95.json and https://artists.proofprofile.net/proofs/artist/c76b6563-0385-43b4-a7d2-4a723a62ef95.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 0x0f65da6ff7face0f8a9dc3d838c4436db3bbb3629ef8763c4023b46afdfaab79. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USA371613479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5574cec6adbb9c8b63e38c4915ae3ea6abc9e56e3008ec208385aaef215729. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USA371613480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d5bc9b30d573cf07428c2708f98caacde30acbdb8939d5f71b39a4b802800b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USA371613481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2bf9d7b0e84d35a2af47e06ed92a40625560743cdb44f60235fdd6cd328c45. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USA371613485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9d5a00805c847ba3e21402e6041a286e33251973fb848ca2b929e2546707a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USA371613487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6250ac4df9a811ea34ebc33b0eec8decf220b98f8db2d8e4d594dfbd3749d1ca. 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/USA371613490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5fafc054653378caf2d55ee6755d81bc9a42ac9e2ab7f76f32702617c0eddd. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USA561090794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb6ed476ed59bbf6ae550c5709e62a3241078e2d8f6d4f546dafffab9d107b. 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/USA561090797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb075d8d8aa5e752094fb94cf228b504fed02536a19cbb65bfa0ee3dbe6aa8b4f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USA371632970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda08854c7fac2860123bb03c68412413c8da3a885ba6dfd40f235f84674972ca. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USA371632974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fb7163ef26f93736f3a620ee8af0f035f1bfc81d93df2b026058e640ecbad. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:29:01Z), 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/USA371675083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c19bde73fcc88700c1a8661281cd2202c7e7b2bc3318c0c378c0d387e1501e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:37Z), 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/USA371675085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd719a318ca2b67fed804aba5df9941e97b9eb026ca846329babea428fdf531. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/PTOV10800053.
Você Roubou a Minha Vida (Usted Se Me Llevô La Vida)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e989d74d3dfd2d4d31c7c77486ff8ff161eb1c2e3bc91870f814e09603c2d2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA371372401.