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 0xc0ff0f543ec6ee0c4782746f7414d128fb869e021598c1c0d5148e6d80fdc145. 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/d6219f13-1e9f-49a1-99b7-e2cac20e433d.json and https://artists.proofprofile.net/proofs/artist/d6219f13-1e9f-49a1-99b7-e2cac20e433d.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 0x3e80370dc35d2ad2ed5c8423672fd957d423c34bca61fb876118827eb729d5db. 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/ATB350500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a46953892601b5f706e1c7ff5ea6798b6903e7c548f59a76f51224f05be0f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USA560631403.
Make U Move - Rocco vs. Bass-T Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd494d654490d08b6635cd30599df32ef02294a901866fe62ab9c5a50b3a3da9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATB350600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9eb3e8399bd127584689b4f5978c339aac55588da49351673db10a751ce7d7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ITC940500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c108d1cdbc62dece97ab8ef5937f176b7b978ac1f866366fca4debb86f3a6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ATB351100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302981fb7d027b69da68651f6ce8998e55afbb3e6ae4307f3a13efb4737c2ed7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ATB351200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f6478c69298ab5affd4b26c949065749097c555a1de496082c59b38f23cbc. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/ATB351300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b871702d8d3a98026ab0db3b187ebda020d7b3e882dc6a2635b75b23e883b2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAHU2419668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8121774a17763712d6bc5ee9b8c63066a357efa257e0d65e1add3fa966535b7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJQ2512288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe995eb364e48f6bc33c26b0b31937caa9c7a1664e483fc34a6c546692cbe6bdf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ATB352500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184bfe611bb947238b37ec11427698c4bf6fa2d4330ea5a59defa629646ce6f3. 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/CH7812420316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d151ca8cc91acdb08433116867d2d172ee70baeedecd91a5d03749f2e120eb. 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/CH7812420317.
Rumble in the Jungle - DJ E-Maxx Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea546c985945a6bb26b861d1033fefece9d5ef954aabb33e1f8fd7c21909974. 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/CH7812411946.
Rumble in the Jungle - DJ E-Maxx Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b6517bb10fee5ab74d6e75790c859e9fc13954285feaa21d8b691562529a36. 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/CH7812411947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5b8ced7ce405831bea821647f8eb0aaf780b381c64885abd918df948422da. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ATAQ71800008.