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 0x99f6e8fbbd7b193fd530f06445d7aa75d5ce9d864544ccc107d07a0da4593a9b. 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/09c884c8-5365-49d1-913b-c9e0352304de.json and https://artists.proofprofile.net/proofs/artist/09c884c8-5365-49d1-913b-c9e0352304de.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 0x9be8215c5aebd15b27a00e76e14894c094f338e9d8d95ca347e5dd6f37799a84. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QM42K1610441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a0cc25df146b9cfdd6d3a387359980dceb7e40511187b30c083c998c0a424c. 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/QZ8QY1700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267a023ae4e6d55c07b47ceefb9b44ba54581572d2c227668f8a78ca0aec77bb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM24S1803584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58779c980e440a8d2fa4031a8efdb743c103d4a4e7477426ea4df8cd1ae424. 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/QZFPL1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d09c2bd64f2250d90cbb43e7bd8be741215850ff433a6e12de77e3a11dab777. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFPL1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6cf5745980edbf78cc370d11e1afd1338a9970803d523bb48e557f19081c27. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFPL2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6cf5745980edbf78cc370d11e1afd1338a9970803d523bb48e557f19081c27. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZFPL2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fdf4decb26b0b3db965a4018c446316673aceff2244f6c03aafc3de4990ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFPL2000047.
All I Have (feat. Aviella) - Madnap Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc1f0721907f977321f717779166015deba1cd11699a2cdc88b6b54d1b7b9b. 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/USDM31910308.
TIME - Madnap Remix / Alison Wonderland x QUIX
TIME: Remixes (Alison Wonderland x QUIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb178ff7f834008597cc9d93cfe87d30ec72cc19ef0e56cc8aab7de580d8f5c4d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/AUUM71900879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beab24ca66752d59c2df11d9a41f3c4fad47eb12f7310c853b9b47b1f5a7549. 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/QM24S1809853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bcb64dde827c02ce10626c77113ec89ae61c33e410cf6c680b8221270eb1d1. 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/NLRD51632435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcce366b41fc980923f0a100de5e9f4636e176ede15fa327d2891eb4d813493. 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/QZ8QY1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39797665d47ee1c57fb32e4ff0e6dd1b671ec1dc42ac6fe41e7160ca1073708. 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/DEVF11800415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc34299e277b9570d39fb814f02581f94b01e461c7548bfec12478a790baa28. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FR59R1656360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeb4f9830f1f6f19c9c5212afb92466c6484a7dadd67cd37bc4f073bdd9ca8c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZ8QY1700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4eb315c1f0aa7805f8286c95b71cc892ebfb7a278929043fa843644a6ff27e. 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/QM4CD1600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d4b265d1265a1eb8c68a33e6aa36540564abeff172067e28326a58802a636. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZFPL1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beab24ca66752d59c2df11d9a41f3c4fad47eb12f7310c853b9b47b1f5a7549. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1809853.