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 0x38785f9b76e736b05505b9da2ddba1c276318a5715573046b37ed57568ac4c07. 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/3e5a17cf-8d8c-4101-95ac-128bbb4ba26e.json and https://artists.proofprofile.net/proofs/artist/3e5a17cf-8d8c-4101-95ac-128bbb4ba26e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beauty and the Beast Medley (feat. Lexi Walker)
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 0xda073b1b5c1a2e5f5ff5fc2e8d8ab9ec610aba3e677cdb4e072f78ed08dda2e2. 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/QMRB31700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda073b1b5c1a2e5f5ff5fc2e8d8ab9ec610aba3e677cdb4e072f78ed08dda2e2. 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/QMRB31700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda073b1b5c1a2e5f5ff5fc2e8d8ab9ec610aba3e677cdb4e072f78ed08dda2e2. 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/QMRB31700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff82fd3b2770e959c3eb6807a4411f23fe54b4428494e6075a983e174b5d1001. 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/US23M1600097.
Lyceum Philharmonic at American Heritage School
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b3c2579e6c71208dad0bde4a0045ecfd9b35b8081c350c11803005ed7ab0b9. 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/USQX91601365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7196fcd02f3dfe548f0909e8b58b5e5e19781f529f66f6d39fb05eebb56e8c0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91701816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe174b843db9e8318f6e03388eaa48eddca45108b3a489172624cf5429cc45. 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/USQX91701817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2d9f6d4ba3b4a6243de04198b93f3cdbb1757ea9d422454ff73567f7e23cf3. 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/USQX91601367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd850f998c9b280a334e191660a2930071be230c1a89289fe515ceacc399f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91701818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86748dd481ee2a88aa251ea4b2682ffbd11c02a5f709e810b9e4fe57f5f30fd5. 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/USQX91701820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf10043af25348779eb96ba0a9ede97f12cbce905b67cc879c42ce5adeac8a9. 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/USQX91601366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477863570bcf0d80bdb4e892f63948bf07869e211154d8f641e1e11a01369585. 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/USQX91701821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff82fd3b2770e959c3eb6807a4411f23fe54b4428494e6075a983e174b5d1001. 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/US23M1600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba66743e7d7defaf1767a8b856b6217e4c8b9fd45ae247020b2f424b57df351. 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/USQX91701819.
O Holy Night / Ave Maria (feat. Lexi Walker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a34f3d6a58d9f56437bb0de414615d03ccbcd469107f44c4d912323951e3ec2. 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/USQX91701823.