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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342de6da4c250b6bf7a84211ad46b64bb62905bc3ade43fab0b01bf270a43863. 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/a1ed29b5-c06a-480b-9819-ca7d0a8ac407.json and https://artists.proofprofile.net/proofs/artist/a1ed29b5-c06a-480b-9819-ca7d0a8ac407.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b2b0093cd7520c7ea738700946432c00b8495696d29c38eef1d1365e20259e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/USQY51412815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e1d3919cf5daf6ed286d4d408b4102964e59c60f4ebbdac2ae0ad21f6f0b9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USQY51412816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2002071f5329c6164c73ace1663ea4344b9151b39d8ba616f272a991b2f13ef4. 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/USQY51508578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241df9dd0e610155bfce681c25cb3de8bb23587dff8ad3fa03ec1df5495800a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQY51508579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ece3dab11e3873d5bb396d00b1a2ca6b60a14afeba0eefe38c9ab55585ec699. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USQY51508575.
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 0x78e682348e09e3edfa35e3ba00a433c3a203959d2b50549004d25fca83cfca4c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USQY51508576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb753aa338aedab545eee55cafd5e7d759fe650ae8e8dc92c6d53b77bdb884d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USQY51508577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bb8066b314a654ce6a6641a755d3e37dd10f6db14af013774c7a6d7bf60b71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P1601698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9552084ff0fb7985625e8d1f6f813d393b5e0549e303fd9d878953fd91176a8. 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/USA2P1601699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6694359e766ec3561eaa943c74babef07c82256e5154f8cddad82b969db4ef. 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/USA2P1601701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3042fc14e36655c9d0e7029af2d27c59a5e37471dafce936b120597ebb3e14. 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/USA2P1601702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519da626efe02fa0eebb13da1dbea17cb8a20e8b24738a8412ffb6879977ca64. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USA2P1601700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ccfa280095fb0c751ef92ebd24342a7c915f969f2d1d7a82d4e7d31006e164. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USA2P1807346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806d965af6eb3f08333c4485748b50cb43d028986ca0d165d95a460271eae9c0. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA2P1807345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6fe9d6705b714b7559dc3073a7c7dec72af72ac1ea104c02ad016a13bac2ec. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA2P1807347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad755ba867185c7ee2571ff031016d059b1407961d617bf7355707107248f91b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2161881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3f01d4b86d55aca4285cc1abe71a81390fae7acfedb4d0104491f11aceb92e. 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/USA2P2463337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3026eb0d7ec171db3efb158daad72ea1e916767df3de68d1055b09ef03fbde. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P1827206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e623839504fd1b7c3f3804784b8ffed99dec5ab4447862a7309391df59cc8b. 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/USQY51755269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc991d4b381b22f0e8ddc5a038ed606ee445e2d56a415e97838cd604116918. 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/USQY51494432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e184bbe6a17d8ec335e6c3e688c240cdde5f43260935973b37d5a44b1319026. 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/USQY51494435.
Dub Warriors, Vol. 1: Live and Love Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaff86253cfa6c43954aa4fb4ae4ff0e547eb285e0f8b4893937c501cc0f765. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/GBKPL1561508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf55dff9dcb4a1c84f9d1839f239415a2e57902ed5b3dcbc55e23c019463e2a5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA2P1827207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae29aaf837045c53790b2f628301e2b8e707d1d1d36a11f2bb4c8cc670ef61ac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P1961305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c7a404d00e8afb1950e1c5d4975f83f6fc915c4fbd65dc544aa8046f2921c6. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USA2P1549999.