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 0xf5d5fd61f6f22632a2cbab2faf73c58cbe85512bf89369014d5f10ae49193f7b. 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/4bb5ac2f-3422-4d80-8bc8-45ee42b20a8d.json and https://artists.proofprofile.net/proofs/artist/4bb5ac2f-3422-4d80-8bc8-45ee42b20a8d.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 0x59a68072383978067f9be3384678f8658c9814c8b0ee712a45c594ffcbc5420d. 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/QMAAK1482941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b5627f92682cba169b03a8f74702e7ec9dc5beb0e7a121cc80224bbc857cb9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM9AA1637698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7720f8910a4a4c88493076765bc4cb1d4084239f7e00e8bb40fb67f80709cb. 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/QM9AA1637700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c50a0b2749bcdba3fb3355caf18ecaef3458276c31cbad4a19dc6a66ee90f80. 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/QM9AA1637703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179358c078293999a320b9ad0fced64bd5a80030c01103a4ae93f94d28ad8bc2. 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/QM9AA1637704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95309ec08326643df9d3e8f9fe03abd8ed89bb5d259db0d12d84557d52c9cfb. 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/QM9AA1637705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c1cba0388d9e2badb25ff80be00a71ba080eea4c0ef42650ff33fa43710709. 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/QM9AA1637706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1495aa65f767a67514dc4e742f19dbafb5c39c30ed21200b5af98f9c32f45b17. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QM9AA1637707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c026e3ab8b0a1ed86eef73193318f7df671e6cd838aad0db054e5058e5d58f8. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QM9AA1637708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352a99e11f4f66eef58307b06ea7d91e75ff4005498c5999373c6a6eba1547ca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMDA61883472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629877c9bb2d787ac8c3fe58befec7a3d00bab34a9e3be5a98c845582f1e9829. 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/QMBZ92030011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594dd9b4f1c6f07d2cb4c92047c3c1d19796d422ff00e0901b7c2d9a45e9ea0c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMBZ92030025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf348591a494d2eabb21ff49108b31104af1881f9967c813b5ca226997f9c369b. 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/QMBZ92030049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd718232eb292b22e7cbf3d5427d0ea3ab3b03e3e7a85e0126a05f300e1625b44. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6P42061141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb43e2f2184c396b70b0f38698cd025debb88f941f061a207aa54cfa041e061. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QMBZ92030082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02b7919d6faa624fb37ca2341148033238bd9ccb3c7af6885b57580972808b6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM4TW2344696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52a98257866ffebf79b9275ba4504faa11f112cca375b2a8e359fad7bb77a9e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QM4TX2307112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11a819451fec053abd3e49f5d251bbef5e24358555abfd4a1fb41217e761e0a. 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/QM4TX2309939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3688a76df5914f1fa2b0c09739e03f94f33ad347291f4a016317f12cf677126c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM4TX2309914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123de51d1a3271fda8246fc7fba9e71955feda0cec0b085c49ff5b5ac859df97. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTPX2406624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67a8e1c2f1237101733576581acd3192eb5b3e0a4da6efa1a2f51bd38edcd1. 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/DES372301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67a8e1c2f1237101733576581acd3192eb5b3e0a4da6efa1a2f51bd38edcd1. 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/DES372301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67a8e1c2f1237101733576581acd3192eb5b3e0a4da6efa1a2f51bd38edcd1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DES372301133.
Superheroes (feat. Celldweller & Discrepancies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a11944c998a845830eb0dde04825482b5df5898853b95df02d179ffdb48e2e. 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/QM5LC2300265.