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 0xf1d415400f07f7064118aff47133a77b84db0df4a31ce73f0690503f945c1c39. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60453cc1-a448-447d-81c0-47516c30647f.json and https://artists.proofprofile.net/proofs/artist/60453cc1-a448-447d-81c0-47516c30647f.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 0xd2f25bd4b4b5f2752f31150ae2d2988595cd3b91e2aa766fff29a99b153a5774. 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/GB7EJ1300977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b9b59168f83e9b3f91910bcaa459cc5ba8f2529a018edcf90b7d2cd9518ceb. 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/GB7EJ1301126.
New Jersey 2 Chicago (K' Alexi Shelby & Super Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97efcc726d6199038bf27d71b51a2ea8b0512fcc64ac2df0904a489e70ec3ab. 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/DEBE72200441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e3eb64bd3b7fd6042db79776bd62d32b9457603f4e0989ec4a56be8ca246ba. 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/DEY472475392.
The Ron Hardy Memo (Marina Trench Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5a1ac766f2d6e4be3281f4ff75e0f6159d149b4d084169c54bf7a29371ee57. 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/NLZ9U2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9abde94a08654aa89d5245fa9a85a3e8e1adcba76b0c1a5112b9003d495ae8. 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/NLZ9U2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57061488e2f830d13b0ea0f901d03fd258b330edf37d4e871edcfb33a96163a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLZ9U2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dead6c208ee5f6c6fc1462ff40759be6ee1ebd56b1dfba6f2d997c7d21fd59. 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/NLZ9U2500024.
Season Of The Real (Marcel Dettmann Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe095fad2e3b598de2833ed8580c6fb7c3bbfb54b2f5ed896affab25bb0741497. 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/DEG931591395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f905e093b7d601b35ca8539cc32e399d715767d3a3239e686ed53e77400bfa. 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/DEDL80800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8a7d8992f363e6512d1e937a4eab97420045e3f0fadf064838a798b09ac629. 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/DEDL80800287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2794fb03a541c08b744bb92946721c48c43fae7014050d4d8558b2c5cc56cc07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2436954.
Power Concedes Nothing (Without Demand!) - K'Alexi Shelby Remix
Power Concedes Nothing (Without Demand!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa08ad140c98591848da6469e0014175f79054a7d53a56f248b5bb49f851f60. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBE72400292.