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 0xb19c9179be8ec1b3b096630c08cd646c723ad5a1971e316ac3559b20f3c84adb. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73b86504-4bc3-4498-8c6e-ee849f8f5275.json and https://artists.proofprofile.net/proofs/artist/73b86504-4bc3-4498-8c6e-ee849f8f5275.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 0xa41203b6cf73a2f7074fc1a4bcc0ea8e99a84005786da8ba8aeea597ca6d96d9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCACZ1741132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59903e491c515b5dfeb661a4f6a475088950b9938bdcfcc1717cb3e9f0f1d7. 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/TCACZ1741142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce61f2944f85a378279df2abb78c2842105e5fd6673e581e0b436adb22a9b162. 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/TCACZ1741151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bd5158d9b30f292a9a6160b5d7166f7533948010b4e079e88c288376e65fb9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCACZ1741155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a674850248a5ca45e7f5cf0aa999150e514490b162191cf9d2b616c8c98412. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TCACZ1741169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9e3d7d31e670e2d07409b9745859ef224f57d3750ceec41e9ffc8912b55c9b. 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/TCACZ1741171.
Agressive Finessin (feat. Lil Torro & Chango Locs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775d350ec74299a63b2967b8050bc4f12449d5b2bed7bf395fc6c27b27e6df3f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCACZ1741215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06429ebcf64b528fbef7dd5711b004cdee32e5781ea03aab02e84c805f668ba7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCACZ1741222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3967be97597a2a5145cf6eb22663c1ca870eae0442b826491a4bbb41930b27. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCACZ1741236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e88b3322ae2d1f62f585b3ea4efc48ef68fe92dc3d0c2d1decf4c9dd01e221. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCADR1856024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e542bb19460d9a29800cb3ac939eb55440b1923133de834131b03ec1101577. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/TCADW1843334.
With My Set (feat. Silent, Y.O.G.I & Young Flacs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2ce99e17327ac09702bb8b2b172b90b88e8f5fef5ca1e36a0ab7877be0de33. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USUYG1141699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2856b2569c10b68dad6fc111e16eb037378abb507a943075e89a2bd5c1ab96b4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USUYG1730465.