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 0xcc1340f55f781693ceb09e505a11ab34c0a42dfd39628d04710d0da2f299f42a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10ec46ea-4244-46e9-83f1-03b215a9fcd1.json and https://artists.proofprofile.net/proofs/artist/10ec46ea-4244-46e9-83f1-03b215a9fcd1.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 0xe24f56324f8e03a1a5465f829479bde783fdaba0d478d6b697a516e29b1b851e. 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/ES71G1500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5828c4de8e1efad25671bcdd076407c44fdf285943c9e7e3f3ff56289c554. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:11:02Z), 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/ES71G1500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f097fed22b6e9ff155434a4a5a2b36627773a93d1c3fed228e4654b096c9397. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G1500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7037da49d974d586f401034c1bf981c963cbda5241732b1183d3dcbe37e0c271. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G1500923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4d7977e34b3815770845de30e780b17cd32e4fbc258da7bb915e662b96c332. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES71G1500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9053503dae5ab9f6c3d3a940c93117c8244c10c71e1da09f08ec1c3cfc4e08e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G1500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd0705d3afba5fccd764fe4452008b827616ae7c28514b087cd988a355e1438. 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/ES71G1500926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52816afe618978eda9f69eefed4689098eab53b598677a67e85eecb9adc5f56b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:29:41Z), 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/ES71G1500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dfd1d50242213176120abb0090d3ec2f4c8c83e3064a9584ad9cb3a6cf3f15. 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/ES71G1500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a7463c57ebede91879fdbe283c47cfc5e8a9aff4a7f57b10eef452b7db97f. 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/ES71G1704110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00ab58b6a682de6ffd3b29bf690194eec61dc266649b068f61d5a07c47d3db6. 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/ES71G1704111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3770947171d1f135672317f76300a39198b6963313fda3157b0977618cc5e4. 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/ES71G1704112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47a22a27b8d2f62be4260a092112f1adeda7197a439ec75e4005b2f8934976e. 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/ES71G1704113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4aa4560c681bb66012243ebab19b4da29793c1d5a9f11dcd90364e650eaf22. 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/ES71G1704114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb659a797edb27539af63e27fd8d50cda77186c2be73cdb540055ec988ba827. 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/ES71G1704115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda471c6a1d639950ebdbc01933fd4e8abf9a59a1d86c1affabb52c171058ee6c. 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/ES71G1704116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe323e3d29dfa405dbf653d8164fbab8e9292d49a73af3ea10c2f3f6e308a01dc. 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/ES71G1704117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe61ebdec49c6ce0ff6694c5d0d950f31cf6271838020c274cb014916fe69ac0. 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/ES71G1704118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5dc6167396f34c03b42e2a15513e506722435d17d1df7a48779716422b2d7e. 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/ES71G1704119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd82184007875d557d48523eed169d11f759e73a36a3c33023afd0a970ea15c. 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/ES71G1704120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd43133c71bb73e42e75e1ca228110bbaaadd323d98c5e7613d148a3f129141. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6N21925935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b696b91a96dfeea6c8e29874e5f1f827c05e1c8807ac275796cd223c75aba6. 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/QMBZ91956446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc618ceb1d421eddbf0bc267a5c87bba410eae20cf390d5871693203910ac3dff. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ES1702000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e88a9171329b81d81f62ffb8681fdde932978255ba233e88560c0f514fa1da. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:09Z), 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/ES5702002147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c5e8b553307d07c042a3ffd3464b745137a4b5391cc35d515839da15d2818a. 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/ESUM72301058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9eb77113b9a15fe4ccf4e722ad2dbeeb058d90d03eb02e56d606236953b75a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:25Z), 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/ESUV72300105.
Mis Amigos Opinan Lo Mismo (Este Volumen Pide Outro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe683e216f46ab4ce7cbd0da84e6774448fa38a3d9ffbca43d10171ad5bc2ede5. 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/ESUM72400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa07446115f8882eaf2edd5de031f6da8ce97a0d4418fa4193ed1a0a71c285. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESUV72500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76145f6234ea66f68e009dd5f28bd090138064eab8675e47e96e6df30c2e9d56. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/ESUM72500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f1ed25b11a52bed5ab0aae73a95a08cd1dc012b65b6368316f9e8b313de6ee. 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/ESUM72401615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abfe21fe82a6e014b85aa6d30034dcf43ab2344fc9846eb12b76c26bc12f402. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bdde36d1bea827d2d0414bd9a33335654635c1422470f964a3b73aabe6d70. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ES71G1836954.
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