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 0xcafb54ab72a9f26730af060045ea26557f3c739a11f74ed4cccca62978c5ddac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04a2fcf9-63a9-4ec6-a4eb-4ff4b7af7d35.json and https://artists.proofprofile.net/proofs/artist/04a2fcf9-63a9-4ec6-a4eb-4ff4b7af7d35.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 0x52291d474e5c35a1f7df39d7e146d52954976fa90d9480a83624a89de40110e8. 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/USDBB0951205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf679af32a2a263074a41196f0cea541d582a9f00e0d00d005117bf87d49bf401. 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/US78T0503095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383f52f79686c02192438362003c1a262999e00fd4563efeafd6f1ad1732328. 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/US78T0503096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c089075c5504d713bcd6df1fbc7d76df16a9d6adf89bbdaf2a0f19dea8e9cd. 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/US78T0503097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e49069fd51c4eaba5cefc601ca04c2c4af645e6464632aff44038c27fa8bd16. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US78T0503098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb9311d19ca3d33e02eb610f11a17ca2853140464e2342439e4775375d021c7. 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/US78T0503099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebc1fabf0372add7e6232fc981643f3ddd8a59eb058b110ddcb6a3eb3c4054. 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/US78T0503100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55952c2c92f26e395a03d805aaa9071dc2b0230de307bab326a3d904e9e2d4b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US78T0503102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c67b194fcecdf6d724ce402d1279baa404dbb4a7dfa9b375ac5546ebc03339. 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/US78T0503103.
Vintage Puerto Rico No. 15 - LP: Cariñito Azucarado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22159f34b9780e63ec3b5930bebdf9692695837ab8fa5d07fd2b226dae9e1522. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:56:27Z), 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/QM4TX2039651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989036c20741e2ae3fcd230291489ad8ea35078e36f9abc56179b0423cc05214. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM7281549361.
Los Grandes Exitos De Virginia Lopez - A Peticion Del Publici
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c159b6ca537f1078697d9d80aed0446e509da97ebf64a5cd7bcb83c44fb1440. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:39Z), 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/MXF019901668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdda03e762f07ddffbabfd9c8dd55ba0de0760d7bbfdaba191fd3e7f30731d4e. 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/MXF010000846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24651542b55f9eb861e382833e7a21fcc41f6ffc4f62960b9a2c4f26010a8ec6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:35:53Z), 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/MXF010000850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a19812f322627414ffb4dc53e015813ea2d138fb574a1445e9ae0b77ca8e70. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:55Z), 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/MXF015900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906ce0db8dc4510f4d467ec2e08841fd5fd6db0841cce9e946116aa44484b557. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/MXF019200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fb3ce5d40cdc926a482b330bd5ddbc825b61ea6299831d6489cf28c3422874. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MXF019500948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabba880038f5095a3e60cd7b2ecdbfb28c4c8d3c8cec9b8d01d7d8afc243847e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/MXF019500939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bcf6e05345403b23a70366e01eb5046247c03c5413a3489ba5aca13a2cec01. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXF019901314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3062be099dc5a6cc5671aefd67afbe4388d2df1408a09578eb8bf7dd001b36bc. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/MXF019200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c65fa34e20902823ca5a5d232ad7620e2b96a7df39b2aa9339d3540f1fe93. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MXF010000853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a211055e2829312d9580e7960b3b851a30ff543789cc9375d5f11ec58a6df. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF019500950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292b31656b451bb760f52d400c9a664e7b397b4a7f3b50e36be70ef72055314. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF010000856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdda03e762f07ddffbabfd9c8dd55ba0de0760d7bbfdaba191fd3e7f30731d4e. 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/MXF010000846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0621d22350cafe19748e0bec951c7848e35a80461f94dad8b0a3112103056622. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/MXF010000857.
Frente a Frente - Dos Estrellas de la Canción Romántica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1079df1209648e3deab39f22187b0b9009bcac83c43719ce88470995a9c4f8e8. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USZZR1010059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801dcc9f618aa3dbd8e4472d006579261c982e8c5a17e1ff1e22ea513e075b33. 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/USZZR1010061.
15 Exitos De Virginia Lopez Versiones Originales
Virginia López (Leyendas de la Música Popular)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e21a527d0eba7f3e694c0c3dcbe9a5ef23fa621ce9af7f71b87d197d6bd3fc9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR6V82138052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf585966a4a35132bf8cf915edadbcc5d87e593949309922e1ec7b927ef0c283. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V82138060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6249ce75d8bbb0d7fdfc72f0648e5cc933ac6a73cba2514d6f2ec2e0ce2bdb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V82138043.
Historia Musical de Carmen Delia Dipini y Virginia López
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fa6b9262870a2b842198f1062bd87a539767c3940220e03e87527da574090a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMFMF1548484.
Virginia López y Julita Ross: Debate Musical
Essential Classics, Vol. 997: Virginia Lopez
Los Grandes Tríos Románticos Que Debes Escuchar Antes Del Fin Del Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bcf6e05345403b23a70366e01eb5046247c03c5413a3489ba5aca13a2cec01. 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/MXF019901314.