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 0xed07a327ea893a85e3c53c7258e2c6598974784e4776caa5f598adbea1ae18a5. 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/a7c2b70f-5280-4711-ba05-896dd33db882.json and https://artists.proofprofile.net/proofs/artist/a7c2b70f-5280-4711-ba05-896dd33db882.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Six (Original Television Series Soundtrack)
Far in the Grassland (Wingspan Original Video Game Soundtrack)
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 0x5cad0fb878fa8eeb2cfc3ce65d1e568ab8019cdcfb986445e3a277c936873001. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2024579 — a six-check JSON result.
Wingspan (Original Video Game Soundtrack)
My Realm (Wingspan Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019dcad11d4677e2b299fb693206f1298b3415a4c94907e8cf66b1f744bfc913. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2098481 — a six-check JSON result.
Now I Go (Wingspan Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff0703741869ebeff44e46e908698c8726ecc505ac8ab312a786c05f5fe64d3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2024342 — a six-check JSON result.
Wide Meadow (Wingspan Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4db98ebe81eb766c566f53010f860cde37c63c08d17941dc025f5174409ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2011805 — a six-check JSON result.
Treetops (Wingspan Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a136add567776b11c0412ce6cec864c029cfa0130030329e7ab7a4411dce13a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2024315 — a six-check JSON result.
Starting to Fly (Wingspan Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66447499ea102f812160ab2f2cf22ae660c64d628dd4d467766e7d0c7859b806. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2025933 — a six-check JSON result.
Morning Breeze (Wingspan Original Video Game Soundtrack)
A New Day in My Realm (Wingspan Original Video Game Soundtrack)
Tops and Crowns (Wingspan Original Video Game Soundtrack)
Sky Adventure (Wingspan Original Video Game Soundtrack)
Flutter (Wingspan Original Video Game Soundtrack)
See You Tomorrow (Wingspan Original Video Game Soundtrack)
Evenings (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995daf527e58394c18c0e9686531b8a03900861aa15cad9e7975cbb477b2a19c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2337887 — a six-check JSON result.
Meows and Purrs (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec3b93ee9fb31a43bc93bf7668a1b066609694d1e0b5699dde88cbc9629c1e7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2313269 — a six-check JSON result.
Playtime (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a9043dae8f0f17f52a5b6992245ad4d010ac3d31b093d149a64329f0a3380a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2314037 — a six-check JSON result.
Crops Left Behind (Wingspan Original Video Game Soundtrack)
Sounds of the Forest (Wingspan Original Video Game Soundtrack)
Cat song (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e57919223855a16a987e9056d663e7689aff249c070ea2478e825ad477977. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72426445 — a six-check JSON result.
Cats and Pillows (Quilts and Cats of Calico Original Video Game Soundtrack)
Ginger (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96226975676781aa763f8cf21ea8c6c7197f701c3efab02aca5452c3b64fe892. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72429090 — a six-check JSON result.
A Ball of Fur (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395e5d0d57cafc1fde6069e84c84134a9dc2d01e06d044dc9a5cabbc6c6da228. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72429096 — a six-check JSON result.
El Gato Negro (Quilts and Cats of Calico Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb3d310439c1141802e747cde43b2682187ca15222ac1f8743a322e3f0e902. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72429099 — a six-check JSON result.
My Rising Sun Realm (Wingspan: Asia Expansion Original Video Game Soundtrack)
Lotus Wings (Wingspan: Asia Expansion Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea01721383a8bab695dc2288308b5151e2ab103b8d60555da30b8a470c7a7ec8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2562887 — a six-check JSON result.
Sparrow Feathers (Wingspan: Asia Expansion Original Video Game Soundtrack)
Raven's Call to the East (Wingspan: Asia Expansion Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2704f3e0deac833ee5bbeedc1e3c150574194098c48e80e3e47d1b6c34e8276. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2505117 — a six-check JSON result.