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 0x106bbef17c034221ea7d843742f6bb9ef5bbadf469b0c9a56448900bb803a6f5. 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/f175ccce-2bc8-4a44-a8fa-92e1824bfbef.json and https://artists.proofprofile.net/proofs/artist/f175ccce-2bc8-4a44-a8fa-92e1824bfbef.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 0xcf03092e8436372c47f69e82570c3b472f74c72ef84060408bb51253d75b0ecc. 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/PYC842413507.
A Quién No Le Va A Gustar - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f5920bccf75f1a6d40d23386db8204e88a019c3da19c1a028f04cb533b1ec1. 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/PYC842413508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde44f25582e81bcecaba4339b6382c2e02e5813fe3f47e4f0cb84cb170b3061e. 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/PYC842413509.
Llanero Que Canta Y Silva (Instrumental)
Llanero Que Canta Y Silva - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70377b3342870ba471ad01975239fb30636d37e8ab07a88949599619e641a61. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:17Z), 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/PYC842414068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb760b128535189d708edbb09b1252e99a2bab1e98e8f9e4f2e5f6e17c8ac045a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PYC842421617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47500e0517b57567fefd6bb446f0a0b2921df3d197a18443dd40b2abfbbb9c3. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/PYC842421788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e6f6834ecc350b59e9724dc8c2952e8c32ffda8c734250e5cefb1d24563788. 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/PYC842421792.
Clásicos Del Llano, Vol. 3 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5788dbb2231c2ee0afc41237d210f7561c591b4da341faceb30d1b31a60a50b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QMDA62591009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b17691c84fed54d47718c00cd0cfcf00c1eaf6eb939c537a8716269472b0c95. 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/QMDA62591012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6f72368025e2a95f7be0f006dfcc099bfc484f2cfde5de94637e2f78e4d737. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMDA62591013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c57dcd80bdc074a90b1877f550717a131dbf96b88a2f477ae8d5f94889170a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMFME2587445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcfc8b5d4cbd99cfaf87941f987aee940cde1464be87141b5783b7bd00e3f26. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMFMF2508779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14185113445b6a78c49ea3f6c6b2af8c8d25ebe2787a13ee099ac5d78927c18f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QMFMF2508780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f4d094476d8310e9e717ccca224655822d1acd2bd1a64fde4c00385bff5be8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:20Z), 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/QMFMF2508781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b4a6a8a5c3fa82ddd4c528e88144cf569ca3450963d483dd6eb62bb99e4260. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QMFMF2508782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae3185776f7e32863fe315728247003680ef2de55540ff24c9da1e32aff755. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFMF2508783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9527d522dff94bdf23a3161c292b85e9729c401c5d5c3206777178acc0f48a1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMF2508785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f98b8f7a732ec3235742fccf5a0397c13ff3dcd562976dc3ea73c700f77d50. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:15Z), 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/QMFMF2508786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4045b4a326a04a0f12e1425679754c125edb3ad770453038551e3d4c7486f4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:53Z), 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/QMFMF2508787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7aeb5c019d6dcb77d7827123d718d9c8b87d953d31de34a1e9fc3bc61f97e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMFMF2508788.