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 0x73f60d466ae3d98e5e93b3d282d79ee56ad4cd2c0c956e5ab7b05328fad66141. 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/1003dc61-4b91-4cdc-9e99-18e5b0013cd4.json and https://artists.proofprofile.net/proofs/artist/1003dc61-4b91-4cdc-9e99-18e5b0013cd4.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 0xa0164ae5a2e83fa2c26a75c83c30aa043aae8add090e4ce245b9a7eec925f962. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTPX2199446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe30d95112030857155fd097f9869be2b0dffa5b214682536df40b162800bd6. 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/QZTPX2199447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d754234cb53f023cf500649de966c33cc87c6ad8a03c9b7eaf81a318d8622c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTPX2199416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e59158cf58305acb4eca7c2f49dd9c03da5f837ae4b1c2fcc57ecdbe801931e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTPX2199477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdfc15462baba71b79091d2b218a9c7ff6d99f25772d819204b1b03c10844aa. 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/QZTPX2199430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c3c0015bf850e3ff5af468f982ec5111c9bbaedfa5d117bab98b6919ea67aa. 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/QZTPX2199460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcba7f17e244f35630018adeafa18b61e9a06e53a2039371f2756f60dee655d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2199461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69387cc0b2500cf8f3f8f0d2bb800fe39b24daa28c8daf6fceb07664f11a24b. 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/QZTPX2199462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b984eaecfaa7aae34189ca4bb5f5b912dd630cc671d774bd3b731dc25ef647. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2199463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a51b30f6346af598a6fa2329014a96ed0fade85e3e5027105d70a59981220ff. 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/QZTPX2199464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f40374b935808c6e7d05d1b5ae4abb02be4b1bdb9ee09daaba86676fccd4635. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZTPX2199465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90768c0798787cd5fb9738a14a24f89c93e305c542a10efd953d3be6fc7e4a35. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZTPX2199466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17beffd79271eadbde9971a8fcc4215c413a520c69592de9f2c5decfb6cb582. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTPX2199788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621516b93b96a7e09ff5265f66ad44b44e892879396f8de6a6988825703c9b34. 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/QZTPX2199789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c852c413effac2a094c259cbfc00669b8026ab236bd5f069b8cf9eb598f83c6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTPX2199791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb4e69e4a6d30d69367a3175620bebf6ea37c1ef8a2b5076345cd8a6a50763. 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/QZTPX2199797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae6d13080e239ff51ddd6cc88ce8e7928cd19b16fc48e541c538531c2d05df. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTPX2199802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e16014068de70d1785f91a079c2a1d9dea4b8e432946642c3510e483daec8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTPX2199479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde57a594e5703d0af3a2dabbe6ee11b2be480580a00037aca7780a640fba746f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTPX2193703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3f1c1503dba034895a17f581e871b3fef04be0b05003046699daccd97dff5e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BXV7J2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d4a9aa97cd34b74fd3e3379a5d24a8daac34174d3cca52b876d5ccb6571f3c. 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/QZNJX2352540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2675d8f8f6934c9e95b5c9a05e8d6ff11d7e50649da4ed70e226004c7b152a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJX2352541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984e54644d84850a095a619fcaf9aa1092ae00a04edfdae42569f349a3dbf4cf. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNJX2352542.
Junior Vianna 10 Anos de História - Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816323ece7ae928f0e0a0fcd01938ad10332abcc23f6e10e45f85eb24ceec91c. 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/QZNJW2494113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee725cbfff08fb702a1c248649955065b0293b22d862baac6e921768a69b861. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNJW2494114.
Junior Vianna 10 Anos de História - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b6c21392e1d483f65b5857afb5a0aef58521778f69c32f8a472e0cc6724b6d. 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/QZNJZ2434504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b263c3828c4dc9a1ed45789fc08875919eff3d732e012ee64a4500c9917181f. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNJZ2434507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa682c8c0abccd95f261e362de63120e9d72b4e8790851736cae845e876da11. 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/BXV7J2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3294c144db51f9b9479caa7017ac630d3d2f3db52d285c7ad90747e16b838af8. 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/QZGLS2506254.
Junior Vianna 10 Anos de História - Vol. 3
Sacode Inesquecível - Ao Vivo em Fortaleza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ab728e10540d9a0c720c1fac3b1e154478eea5f93382f6ee8272af79b1b88. 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/BCSUV2400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27e0245b501a569cdbeb57e3261e2f8b58dc2f8a10baea41d84fb76dcc48f85. 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/BCSUV2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29ea55e5614297878f51ef503c079d3c5a77ad5ac39b9bc40cfd0385d44d01c. 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/QZEQU2068654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee00d3b4649d397f90e30197869cf0290c591a135a8bad57bd41dc98178eb85d. 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/BCSY22400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9940d26876b1ee4dc5d42fd0fba88c7b1bf05a02f93a68853ab195aa8f1cfb6. 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/BCSY22300013.
Casal Normal (feat. Junior Vianna) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9484686be6cc80a595a3f3acb3804f6a7736e902043554d81edd0f2a28abdb8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRF2F1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59025249fbc521b41f84e123f346f2aa393f4a7218ef29aa6040c16a035ff9fa. 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/BKBUH2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a31882d3e745628ce42c3596d2c06db844fc621910fef82af27f8714744c23. 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/BKBUH2300153.