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 0x7eca5dad2751e5633b00292a98f66c3220f1a9590a493745b01402211d4366bb. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a3cfa01-35b9-4f11-a855-d1eea84994fe.json and https://artists.proofprofile.net/proofs/artist/6a3cfa01-35b9-4f11-a855-d1eea84994fe.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 0x29d64df34ec537803ef5cf5feb75289c43614f47b657ff1fda6a27c8536d1be0. 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/MYLE11800800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cd06b9ea254c79a6030a15fa004ae5303a58674ba4f2a2f204d21bbf6492ff. 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/MYLE12000907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75f944e9fc0fe7ea822c103dfbee0bb86c4cac6f48fef73b6e3e17a09969e74. 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/MYLE12100965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac93921b58b6760bbca69d697f855e3a25af9bab45dcfddbc4c52705dcb8e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYLE12100958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c101851e2ad79c294b46810fddb7d1a2e800b8b05d8140d4cfe0a777adaad19. 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/MYLE12100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d71e8f1054568daedae42d927fe2353aeeaa63cc375a22b0fe737ad72dcec0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:46Z), 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/MYLE12100964.
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 0x7106bce875f939cb7aa95b210d166d2fc55d368433f681406af59b60ec84b9aa. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MYLE12100953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa676c9eb23bc29e41b693d94766824ef937ee18de72b1c3e899426b2bc63789. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MYLE12100956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c8f6370e331588940e9212f29260cff5a7c4b40eeb78fc01d9dd8856d3985. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/MYLE12100957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5cd312f6f3bb2550a66b98b0b2e0cff9b54fd9dbfbf44866427092f3ff1543. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/MYLE12100959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d64be391feb0e336156415977ddfde080cadfe8408fde18b91ec71a71816ef. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MYLE12100960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59ebbb0eb11ba4bd604ad1bdedb778266621cf0a239e1759f0595ae326920ad. 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/MYLE11600656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c60c18977be613eafb8830dd8dc6f79ec08b8ace8b4b93afb88d554bea07b. 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/MYLE11600657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0cac89d9b96d0aa3fe19fe78b939a89d67abd63e19f3d33604f111ae094c79. 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/MYLE11600658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8868844d094e70b9b90c40cbf8e4ef6dc0436b6aefad523ecd39bb8e1fd95. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/MYLE11600659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591ca5f53151b2c9f946e30c8ae5f972c4d4558255004f0062f9a79344e0cec9. 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/MYLE11600660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6be86c6fc63415f01309f65afeda841f7be939c4c56d719775094e832f6db9. 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/MYLE12401170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b60d3b352fd892bae27b98d126230672916d44112a711b3bbde62daad365059. 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/MYLE12401174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cbd5eb7ef32275ce203a6156de877a3483da2bad95769cb296423e5ae95ce6. 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/MYLE12301135.