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 0x9172445b6e927ec3ebf264b0c6ac1eb80b800d2a7b069e7455e40c6dfd40c2dc. 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/50bad9f5-549e-4a3c-8e39-52a77296df7d.json and https://artists.proofprofile.net/proofs/artist/50bad9f5-549e-4a3c-8e39-52a77296df7d.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 0xfc9b10ba2438f3925f8eb48e318cfef47d6869b5c7d799c29a5c70570708d385. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6J2217196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dde553a010b66f17def09a99ef0b883f9fb04f23ffa3a1c2e64a6db0edf1269. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZK6J2217199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4479bf58dfa7a7c24efff2741dc5f4f5476d85c3d695207b651be8925598c. 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/QZHNA2383536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4861e111044624295e98b32a65aacb13f2fa285f8f095c4a461f2fed191352bd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFJ2364073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ab770812d7ee1d63a49557620d03cb887c3ffc50a39f1366ebb1bfa3fef97. 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/QZDA82417897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765b38c91e6e89736ccfd901f7d2453b56d901268799efb7fe19d98eb0433f26. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZES72444132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f16cbe0cabba7fc65dc3b113c6f7f7f1c57a987909da09d3ebf0d7dce04af01. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES72444134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a55c277066b1a41697859057fc7258e499f41d31a79fd283c072acfbc95e6f. 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/QZES72444136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9031104baf56c0d2a2d31680813867a8eee465a25dc68e62ca594a4cc7277eb5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBE2490057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233bcd0d9651e91dbe0e26921f9eb87ac554258090a425113609a4decf9f1161. 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/QZZ792416188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c2ff7511375c8484ac146258219ce62d821d3db327dcdab49e94ca7d05640. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7W2408041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47872fea509bbaef704deb6dae577e18fb01a0e5dd9992978c632242d95965ff. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZWFF2415462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf934f834a24a387c765f14fd80ba85b382dda613f38cdfa59803cde0d3a92a4e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZFYZ2536526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8896b6609cfcff005fc9de423bdd64cae8b1c43b422a171f5c5ef9dceba57f9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZFYZ2536527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233bcd0d9651e91dbe0e26921f9eb87ac554258090a425113609a4decf9f1161. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ792416188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1669c5752588782fa56f3d2e0a15e446602437f9c6377c9e2aec840f417ba7. 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/QZFYZ2536528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb81885c7bae24ed14f24a2a9cd8dc809afa0fad723dd59b89eab9f4e543ca35. 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/QZTAX2476320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f157d29b11266845d979f7dda55a817c2f7f403698152511966f7bb2b1500d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZFYZ2536529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68885bf0b4cc0df6265fba359f85b4aa47ce76a34290f8d92fc97ea1797ea165. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZFYZ2536530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c7acd3d554db9a91526c51ad85c0d3f5e650aa3100a6fec20184440cbb539d. 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/QZHN72556382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e18d0dd014b74b2e1a6d1235365c2ec801cd6f1f39475ecff74cbd2ffd879b5. 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/QM24S2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4bd7830429ffb546aa72ef07f10a0fc7df4aa66d6f186ec472dc1d0ae672ea. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QM24S2400858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e94fbaee4c53f84f09ea48f4118fc0d1ef278f5ca55c4f433c02591980e2e0. 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/QM24S2401653.
Thanks To My Haters (Bar Wars Cypher #13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e9dbe2b138ffdb45e7b273ae3a461bccc2ad517c2004dc1ad6c9c910072502. 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/QM24S2402043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad81f40bf6c211773e453f279afccd44e2293e8c0530560fcb5b919b527e11d1. 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/QZTAX2411629.
It Goes Down (Thizzler Cypher) - Song Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0656667b3229c872230c77d03917612b2adc7b7bf11449d1ab7f9593b9010. 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/QZTAX2411634.