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 0x0fd0acf5450b82f180bdf49c40496052774a2d01c5fc79b4b6d35ab7b85c76f9. 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/5c958a21-79a8-4452-829a-c91c65d24bc1.json and https://artists.proofprofile.net/proofs/artist/5c958a21-79a8-4452-829a-c91c65d24bc1.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 0x46a76faee6343fe7c7c61b63b16aa543417d2ec1f3d39e7c2e086ec43d806fc5. 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/QZNW72379754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917475e3ad71fc54210635fdd45b47b65927207d4c6ef74cb7ea1b55ef2a2eb2. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/QZNW72379755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710637ff633cac63c66dac46698d03cbd2f05cfed0e42e45a28039e4f0af11c7. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/IT0312300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710637ff633cac63c66dac46698d03cbd2f05cfed0e42e45a28039e4f0af11c7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/IT0312300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63cb1043c550ed3744699826a0c09a29a8f881f22853c5f049ead48e60b0cfd. 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/IT0312300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63cb1043c550ed3744699826a0c09a29a8f881f22853c5f049ead48e60b0cfd. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/IT0312300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd38f9334cfe4cc6d96d14c0c1f7b96d1c66ffdabb2feb5b04dda2a1616f4a. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ITIO32400003.
La Foule (feat. StereoKilla) - Le Monde Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f30f9a64c7a74a0ef9e29d69d59e25f8f432a3a7b21a68cd0841d0547c260c. 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/ITIO32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe764e307d6445aebe491a45a5923599879a2d1b8d2c4513ed422425ac0c59e5e. 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/ITIO32300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421171dd75eaf6de730092c863b36b18cb41d72237102ab8e388af79884ab010. 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/ITIO32300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d621024a66d23ddd0aa42a02f50c8c734abd6b7d6549f3b69582697b9c29dc8. 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/ITIO32400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f0ccf3ea59e159a1cc8f2f319b9614933e36d63e2e6a07f43d9f236fdade8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862400370.
Before (The Sun Comes) [Alejandro Garrido & Mikenight Remix]
Before (The Sun Comes) [Alejandro Garrido & MIKENIGHT Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7932960ef49219368a5f63cf78be4a60e0d07f188103f93271ab05bdee466be1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/IT00D2501202.
Free ( Children ) - Children in Zanzibar Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08616e08ab3a9f387500714cb8dddf3cf9095fdf644aa306e8285b933325b10. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ITJ872500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed40ccafc0e5aa54e7761e304bd700695f0414bcfe292f1b14e23118c3b2c726. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IT00D2503601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203450c2f0021213102d16f5ac5f2e94d778fd01e202fe5d4ad546301b383fa5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IT00D2503801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203450c2f0021213102d16f5ac5f2e94d778fd01e202fe5d4ad546301b383fa5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/IT00D2503801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d2f6a6b323649865fc1d54d19273fa6ac9bf6db93efa768efb6769e8eb74dc. 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/NLXV51300874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3bdb384cbc3b5c6d0350b7198949533a36d740cce469a57ef7e77b0485315c. 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/ITIO32400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cba462aec3b65e5abbea53e924cfbb681d81c479a48191e143b1c9cb36c106. 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/IT0312300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90711674c62a37b04c3522d7554025132d4b5204e851fb086b4f260dc914bc2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/IT0312300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393c26ed2dffae48de74453bacbf4b97154119bd63c5e64fccf33103bc438ce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITIO32400085.
Scilla E Cariddi - TR3NACRIA Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3338acdf8631d630b6f95a9add8416c516db41452e905f036a4478247d25ece. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ITIO32400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83947b86285470b692e7cd92f08514edb07bc77d38c1911bd39631801fa47d4. 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/ITIO32400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11329c807f83b33b45c5198240a5e32ff19bdd3a5080070210845236fc178f. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ITIO32500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d621024a66d23ddd0aa42a02f50c8c734abd6b7d6549f3b69582697b9c29dc8. 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/ITIO32400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d9402272b17ff4013c44b7894a11c33a095e2ddd87aa3a69daf88382523597. 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/ITIO32400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b7dc806ebe9b69ac5be3ef835071c2c48c1fb543f2540d2d8c477caabc600. 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/ITIO32400006.
Ain't No Sunshine - TR3NACRIA Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483ac64f33023f9ffb42773ea4f074dbd214352327d0eb0b065d3cb2f958d6e1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITIO32400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4955e96613cb2effdb20c3a5902a9818b14ddfc94463e22fc309bdedf3b1e6d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITIO32400037.