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 0x0e1f7266e9c9d04801216c66875706efc2b7159d0338e42687a6037d3be4e810. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d304ef6c-2539-430a-a1c0-efc5ee6358a1.json and https://artists.proofprofile.net/proofs/artist/d304ef6c-2539-430a-a1c0-efc5ee6358a1.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 0x4a684745ea4984d005bcc888dcc6a9e0a8c3bdaf3bf60967678a719940d9fe6a. 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/GRPX11990491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff70d3379bc05b7fb36a93e2bacbc7b80c567dd04af4ec838e64f3d760db8b4. 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/GRLP11901922.
Come Together (Kevin McKay, Fhaken & Yo Land ViP Edit)
Come Together - Kevin McKay, Fhaken & Yo Land ViP Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef48661beedcddd3d1f5f5f7f1ddd14eb7fd55222fa0650b584f1775040676. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBPQS2000267.
Come Together - Kevin McKay, Fhaken & Yo Land Extended ViP Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e23a7f18cf9fa04694cca9a1f7cc3317e27857c3190136e737d12a60facea9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPQS2000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371aa98ca464d4f6efdcc458a90b6d462bbe292e642848e3b0c1f7b2eeec1edc. 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/GBPQS2000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0babc90edd2a3ff127f44eaf084a092bed4e5a7dcdbfa140805a6c07138f8f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPQS2000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fba7c11a8dfc60c487094a767e55b33af95761a9c4e48ac03e862856933a36. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBPQS2000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10df77bedb2c71faa9552688166e02ac67095643d58ce729fedada40299f29f. 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/CA5KR1953563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dac0ba555d773da317c78ce0e64c951c174ef10ecbf415ed4198076a058931. 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/CA5KR1953578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1875bac4936e47cca87aba38f799342b9bd2dc9633f65873f4b5f72865a017b9. 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/CA5KR1953568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00080dac28d86148dc5965e7cfcabdff13dd6b90a1015890255dcf074ca62efc. 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/UKR6V2113174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb648e0bdd17c968c3f618e0a273e7d441a7e2fa15f9390af830cfc2952ae7735. 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/GBPQS1800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251aa36816d0dc82785bd35543abed6f87de0a0c94190c1db4cfc7978f5df20b. 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/GBPQS2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3afa17bfa7a94caf2668297538c899365199930c9bf2846225fa81126d2369. 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/GBPQS1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331051b72f394e739a693edadb82b2dafba2d3c4cf9c6443445d6c67b444aba0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBPQS2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00a676274295cd1596af3e912bf698f30880ca1f346f05d86fe4be1e98e19e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBPQS2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d551357578f024f7b5db37cd567acba09d644793b41fa43c3a5a2d7491c6a8. 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/GBPQS2000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ead9c0e5defdf7ca6ffd0ed4c20f54160092d7b0af07e440101e22843c025e. 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/GBPQS2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7b1646cd33fc232bfd1820251bd0ac4b568bb2143a8b544836414c64843dac. 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/USNRS2241933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe06e6b1f3d3adb761a9a4ba8436274d55b0f238ec0062cd19227833f84c06b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEH742165878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e2251ebf32ea4a28e27307d1e73530406abd4df4d4ea8fe633c721eaf3086. 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/DEH742165892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4437b2c0b4eba54e12494d09793e1603a2a61963837ce8983161d3ad32394a. 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/DEH742165893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf707de72763cb10bb77af87a027a044e410efd203ce0ca483d2b1ff1fd4906. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH742165895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c73d0e3dd48ea2bd65ded3bad027a368c6507c81aa31464e0ba641023b218fd. 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/ITI952000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13adfba4e85ea94430197516b7f384f394dfe0a0e7cbf1efbeb5fbde151ff415. 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/DEH742179741.