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 0x059d43821ae50cb1fb52e71b1036abe33f79fc981d09459f952d54341fa62123. 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/475fb780-92b4-4b56-986f-636cf6f1b94f.json and https://artists.proofprofile.net/proofs/artist/475fb780-92b4-4b56-986f-636cf6f1b94f.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 0x9ad416e426267cfb17e432da8b8d29f28d4e6ae5564b36d9c19250abfe96c85f. 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/USUYG1047591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f5e0e8d3dad7e08e7e8b7fc9caf059c852da2e3abf8944d14afbe4e621ab1. 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/US6YF1800089.
Rule Of Threes Volume 4: Illa Ghee in... Induced Coma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f855a8c6ac87b695aae0dbbe59cfe4e24dd239f19f8cdf2aacad605e4dbe57. 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/CA5KR2514559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc054147d3e93bfc3402b971d3672ea2b02702554b2d736f06d07e7eab44bb1d9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CA5KR2527865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e51053c3c1b4d939a0a5910d92aa0dea0b6eaebb0873841c81ba416da037d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZZEB2329852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121040fde7e5597cfa7cfd6c9614a16fe3cae6f260572aefd3dda3aee1d3ad29. 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/US6682300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441bc0f6fe6b5cff393a5d2ac4c702212748b2600be50f79c7a6ab41961515f. 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/US6YF1900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8623a33f545e448424d520846f9bc66b1e3a9660819d3ddec60bcaa2821a5fb4. 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/US6YF1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150b76995732eef7e378b2852b561880132a74b48dda63e6077df7a68341a7e7. 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/US6YF1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e553a3d81581442d2d3d3a16e8b85ff472bc32e2a64d023e6e6a012655e877. 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/US6YF1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ae48dff628be352be1fbcc417f693492a7e59f5815e465f5e0ec693d94f70. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/US6YF1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaebd96d2e64d72d8cd2bf17943dfc021f64bd607d7ef0c3ff910a8ee68a4746. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US6YF1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686d4ab70a670d6b575dc5b569466c7c232ec7d14c61e3ba433e8fe8eaad4175. 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/US6YF1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe843d5aa5918d3c0ce8dffd77c6fb4f1854c8ae2c74d03235874b791057f843. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US6YF1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cab355fc0a404dfa61c3f5a4f3c0f7d730b583bcf92bb3832baf6ec80ccb82. 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/US6YF1800037.