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 0x31d1f3799eb2fdf812044250de557fe649be56fc0a511ba7c67257bad7b216c2. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6ccd97b-befe-43cc-900d-1142b4bbaf8e.json and https://artists.proofprofile.net/proofs/artist/b6ccd97b-befe-43cc-900d-1142b4bbaf8e.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 0x302112e4703588036f80aca3c33f244f1e2e9c33d2d984ba2e6877c6564c40bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0183af2ee0003bb2aa6b85811cc5182704e10b6b74a726489ae061601d175937. 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/SEWAY1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61953de990f31ae8f2e556133b61c20871267b1a2e942f3e99aecdd85ddc4d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941a12f91bf5904ff348b4c3a93dc617743cfed167945a409806daee016d01a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEWAY1900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898ab499f89b82661e0129c7e1d2a9a4c010ee655604800386974e2898ddf9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab117001cddcb00c9d9555d962c7803f9768c84050c7a04f9ad35f621c44c1f. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/SEWAY1900402.
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 0x0f01423edeadeeddbf846ac0185277ea3702ae6f1c6a3b02de2f0a297d2b21a1. 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/SEWAY1900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722df4452b381e70f0f8116903016d0bf45da7428f07a9b7340e465080d258a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SEWAY1900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eccccc153a49d971d1858c8a985942058bba139fd3439cd8e72128edaa2638. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEWAY1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954df8fcb773dfe593a37f30667c426341007f5f3ebce7c80aec0e95d7f385f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674786c0de6ce2628f50a3fdbbfcb1ffd0a11bf5eb31ae49d4c258523c415e71. 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/SEWAY1500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b320c67d490d20e811fcf62d34b78f2458f46382bee6277da340726ed5e54d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f60e40cda334eb2e962cf6e4550239d62282f0dc440e4130d742dc98ae817c1. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/SEWAY1500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2d4434377dada6ed5451cb9dbfe8073767a75236feb7e6b35b60dfa3121d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6696bd1ee5eb5f5175cd5a90f154d9f211e7e2bf0eb87f028e9de362b57d9b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/SEWAY1500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12709f70a0288e9364fb9c6b69174fa13014d870a997f08d58dfbe72ed03f6. 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/SEWAY1200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06007417fead81f4c7d8424ca224fc524eb91d8a2cf0b1c66cd9f51019c2b60. 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/SEWAY1200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f6d0f734a9a2a8efe2c3d4ba78819de2e28646d101d12820a717bd88fe772. 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/SEWAY1200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d241ffe103ee3389ae920d8c76ede79f234af338eed471ce53b07b9d6e92d3b. 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/SEWAY1200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d463fe9b4d441999666b8aaff45ee14b729eca2799580cc6ad0bf4d206e0547. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:31Z), 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/SEWAY1200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe42894d3e2da0c5bce853f6b031e682d24fe5666393f3432eda5f30829ddb6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SEWAY1200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008631deb84f1b90749392d4252300146f65fb8c627e70f318f1eafe5fc7afd0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEWAY1200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71db3d2e7b032406d65f60ca11ce28d136585a962da6fa1548a852efbb688ae3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SEWAY1200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346220d9c152fb8fc4aa1c38d1472a4b626b4f23dedac81cfa75110d8a58a64a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/SEWAY1200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4430bfe8dfbbb5d27c664db7e7b67499acb8ea0282b5d31b0e174542c9b72e6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEWAY1200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4d8ae72c29bf0a1a8bdef9c0e6cb430fe264b84969eb69f7b9ad93d83cc61. 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/NOX9X3750603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1fdb8684a6aace5a154266f400491e979ce2e744751e7f6584f9daad45481. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOX9X3750604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d93f4063682e873e6d76ee6fa5e48145c8d1e116f6049871f963be35242c17. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOX9X3750605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01882b3eafbf7e0e6057fa9632ce4ee7a72b273944d29800c8553a710e776faf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOX9X3750608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2481141ce71940cb2275cd06b682cbaf4033f24b48cf7039d61130876bf4b517. 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/NOX9X3750601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a602d4f3cb7db9f4117ccc8a7f988581edba75056f1bb9831a32f5f4fd3f96. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NOX9X3750602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c8d849f50684e21ecc86166af85976e303c6c974201b1ff374c1317f6b2280. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NOX9X3750606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447cccc053dbd4e6cd235e1fb38f6c0798a2baa5aa0bcb9d0c3e0210e996be3. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/NOX9X3750607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fbc08d03b7ed68da97189e86614b548ab628e0e6172ecc6c9368d8d9eb5d5c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NOX9X3750609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9301f3af3574a566a291f84f70be036b14d277a7e33fcf701bbe69dd53bed41. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NOX9X3750610.