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 0xfe1163e30fe59695abfa372996cb1448528596a56a9c920673a89edee8619c04. 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/b4406762-c8c3-49a9-a25f-146d1e56f040.json and https://artists.proofprofile.net/proofs/artist/b4406762-c8c3-49a9-a25f-146d1e56f040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Plié in 4/4 - Go the Distance (from "Hercules")
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 0xa52b1120ac8a80d90119475709f5c704536d1e80ee938006bf5cf056eba2dace. 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/USQY51473563.
Adage in 4/4 (From "Mulan", Reflections)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c8dd0c8c4f7c2df2494496725aa6682e804472c11ca108b2c5de81a22ccf83. 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/USQY51473577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a4a86dbd9d0de9211d864af2c9c0ac7c5baf95d7aec0bff0257624f6547b93. 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/USQY51473579.
Grand allegro in 3/4 (From "Don Quixote")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1cf82c939bb00ac944b55963e6c495f0a19314e1e1951dce58e659ad3d332e. 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/USQY51473589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bc0ee88027a586c17f1a5a2f23fb0872d74e03e47c16a8b7336355997fa6f0. 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/USQY51473591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e8a8f3562e386a07fc7f4ed13761a4b4b97a2bec60d0df0a6c6ccc6bd5d0c9. 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/USQY51472117.
Grand Batt. 3/4 - Masquerade: I. Waltz (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9720b5a872586beaa7c013a7a8dfa01c690aa6f0d822b4e466a1f2b4bb2ae614. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:37Z), 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/USQY51472128.
Pirouette 3/4 - Künstlerleben, Op. 316 (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b07a57765df1fdeb93994b7e27c5af2f21d0a3c919556f2751eae63c02a840. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:50:01Z), 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/USQY51472134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b98e6550278911451bd4d0033ea56646c7aff4ead47d31bf63d95a8c703f9. 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/USA2P1645492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a5a4d9806d5251e02494f914c588dd9cf2e80443caf579b204a3f7a17786e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA2P1645493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d9649352efb7b88978c202b0426d22f1c9285e7fe9ee9c0def12de4e257930. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:22:16Z), 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/USA2P1645495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08d24c9684c5df5babc60c9a74fe5f627eae5c84db244530644cf161a29e0ac. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USA2P1645505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870228174da174c0bf8790ccf6082e8d42b2097603abb9ea3950e639ecb3f6a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:20Z), 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/USA2P1645514.
Plie 3/4 - When She Loved Me (from Toy Story)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaa298725b8ff738418249fc85c4763ec5047e10aaa8acd4f05654a6b98883. 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/QZ8251715690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aefd4a72f548829b5cc76ed4a37772416b07d9801807409743394fb4482c1c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZ8251715697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93581fc4bdf9c33e0e17c82727fc0111e91faa6dd7bd1260ceb93890b1f6b686. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:05:18Z), 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/QZ8251715708.
Music For Modern Dance Graham Technique Vol. 1