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 0x0c314d4b79f24e9f35babcb11936f9468b7a123ce809eafc2fb382ab50b8d44c. 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/6a1e3442-3ad0-4896-86a9-c67bdd4f9682.json and https://artists.proofprofile.net/proofs/artist/6a1e3442-3ad0-4896-86a9-c67bdd4f9682.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 0xe8904a0ab6c8ab7ef537ae1eb03c4523fb76d0a6c12153dac891371629690bc4. 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/QM7281742913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545ddc52d64c2585998dda2572859c082aad429be60743c39aa47577d38d5c01. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MXF550611123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b544142cc05ceb797d7667ac937d61ddf3684d2d16b1a7d808a0b87e07d5a5d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MXF550611093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b75819b7a4ec5cb0766d2f9f36c36d4ad90be04fd370f579db302befc3aad4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/MXF550611126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439916746743627bcfb89aa987a500b02d6b115e49d417d54e01cb7815aacd47. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/MXF550611129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d928e5667f3034bff2527f013d5ec51c2fdbefc6654b2cdd06db77b6fa1c24c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF550611133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff10606ce068da62697e1cf6b36404511c1560917150c79b43a666240fad909. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G1716180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6fa52df713cdbb228bd7b329e2906916c67f78982f1c2052a4f6a466ef4732. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/ES71G1716183.
15 Corridos de Éxito Con los Hermanos Banda
15 Exitos 15... Norteños Con los Hnos. Banda
15 Éxitos 15… Norteños Con los Hnos. Banda Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f81790327d372e9b592a50a5be67e3c211a53beb9734b1d1fc222c9876a53b. 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/QZDQH2007821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597300163b0285edfe4565af98ea2dc1323245c643536b06130a5fcbb0caa7c. 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/QZDQH2007822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad79e2bbdac7e25bf61e5c25bea150bcd3810057677bd8c90f47c43071a59834. 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/QZDQH2007823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4642f676e8401afa86de7ff2fb78e0d3486621bd2972cf603f4fc8bcb9baa8af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH2007826.
Norteñisimo! 15 Exitos Regionales Norteños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c0042a22479ff3023c4856900edcff30d20016bae4f575d0e3dd2d5cd2ee4. 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/USRMK1000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd377166d8446688f4849a0fadb40a297d8a3b52758928b4bdfda0060cc76b5. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/MXF550800363.