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 0x03b1efce6aaa225aebf7c922f652d969ca07e0a72a16ebddec7c47e78375c7bd. 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/bc60ac23-11a3-4998-8eb3-714363ca1d14.json and https://artists.proofprofile.net/proofs/artist/bc60ac23-11a3-4998-8eb3-714363ca1d14.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 0x0bd2b97ee270ba55e732fbc992762d0218b66713d97b5095f77ce255bb648b93. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNWX2043409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef66bba9a043cc6b6459a0a1c6478b6afb03dd0c1a50b4fcea5bfce8068350. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNWX2043417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f8bfab4a44b187b1f76ef59bcd1f061f34fdb98ea96b8ca559ca89bf83eeef. 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/TCACO1640300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b374ff6b36fd1ce17d065489718bf049b68eb4421c6135c7de437d5e6c1e3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCACO1640304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a54a63790be8258084a93e1d816c5e0f29cb389be0be6db97e102ab028a42cd. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/TCACO1640305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8906b76874e102255bf55ba3593dd635a172b36977506bcbf4f529236e7ef6a5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CA5KR1713122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ad6893a0e9373ff964d735c16d3f8c2b4d57653596768e51e9602e4f485e25. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/CA5KR1713136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b2f5f20e2c5df7fd5bbdd366bfd1ad0754897666c00fe039c4a4f04c9d21f4. 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/QM6XS2511013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf319b89a65cab8bf53345e17e7835b5f967c18f68d5b3fea496e532824a497d0. 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/QM6XS2511014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc046632dd8d8f06d96b6bb9676a372cfdca06c58d1be716c7ec74923a946bd. 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/QM6XS2511015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665c193b334e60ec6764a82130fcadf29a75543d510f19b08bbdcea40ea753e. 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/QM6XS2511016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee8d940b6cde4506ccfd0b3de0dd1646a3a695e6ba20e711e5f85abaea9d3c. 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/QM6XS2511017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1556d7ca87d2175493ed1e20f6d367b43f01aed944ca56f4be2459b0077b06. 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/QM6XS2511019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185a310e996d1f6a8b86410b6294b41bb677b3d387c2d207c8705e8c32f724c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QM6XS2511021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ae98f4fe05320ddec9eca3e947258c75a1f95ec19a6700d68603ad95c90ac4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QM6XS2511023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1460860437c1a3e2bd809f5758b4eee839560d2a7233e2838f927f7df8eb61. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QM6XS2511024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e479e4fc5620548a2b0e830653e27e1b3f9eb5d2d7f379b9fb249e219381d5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM6XS2511025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b68ff494c39534060828ed77deb4d6c1219c411e5bddbe83291b76298192b34. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6XS2511028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637bdb9932c9e86ce5ed58cc72304b2702c7265c72f86077b621cde993fe3f9c. 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/SE5AJ1600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637bdb9932c9e86ce5ed58cc72304b2702c7265c72f86077b621cde993fe3f9c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5AJ1600106.
Prom Night (feat. Throwback, Sy Ari Da Kid, Lil Flash & Yung Lean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18336eb38ad0f183987a4bb74c28a37448f486c3752b79442a1883f5231a98f. 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/USZEG1502513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a4dcb7109c2307822ec0d89827182c3857add665baf4f136214a3b76abeea8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCACQ1694482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3fd5d72ed7af1e230fc433f9a0bd1fca04f0296dc856faa82c5932338ed395. 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/TCACQ1694496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98483acdf8ec96313fcb36b9e61713b5d5cc3482c020b05bb7eb036826816f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCACQ1694497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e68b8d15597c79e6251f1d3f729aec31e073e0df5e4776956c03229d76ba487. 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/TCACQ1694502.