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 0xa95270e1507f650b76d27fb754d2e4f64e1cd24e6c01521c95f5a63bc7518625. 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/3eea95ac-1a95-40b4-a465-33eab7a7735d.json and https://artists.proofprofile.net/proofs/artist/3eea95ac-1a95-40b4-a465-33eab7a7735d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Birds in the Forest, Melodies of Tranquility
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 0x21f815dc9055964620ae59a28ebf0a88285777f83b971bfa156d88073fdf3fee. 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/US3DF2490678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9891e0e175e1d434a0d54139f3ca07aed7a46b40525bce0da7f9dd8195bfb9. 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/US3DF2490679.
Wings and Echoes, the Symphony of the Forest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8cbd50529fb944a92fe6c2492bbd20183b2224b1fe496fafd303b5e2906f35. 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/US3DF2490681.
Feathers Among Foliage, Whispers of Dawn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897c735e98f12f86858f5e63b0c7daa7a533cf61f26df6eefe483e0668ed68d7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2490682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6c9fe3284a65924d22f446b6d009f29185223dd6110bc5d172f8043bf04aa3. 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/US3DF2490683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568a43a3948a078e6aacb578c703f2264426c143fa794cb4f515bca32cb38acd. 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/US3DF2490685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1560db05580ed32fc928b389f55f25789ea87944fd095fd700de85d0105520fe. 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/US3DF2490686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803f8720b28a5331ab84f8b7cc9ab668ff1b787df090781d213bccccdc3e1125. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2490689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6a23e09a4fe08c47e5ab7c34ea5653aae0d397d492cef01ecf56c94ca46a1. 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/US3DF2490690.
Birds at Twilight, Soothing Notes of Dusk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515432eb8a7e2225939dae737c30b1734555c11cf24991cee7fe31ec431853a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US3DF2490687.
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
Sound of Birds in Nature, Morning Chirps
Sound of Birds in Nature, Voices of the Evening
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f7b47b7831e8db31686be677cea696e08bf57ad611c2092d92a4ecb5959bc. 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/USANG2448338.
Sound of Birds in Nature, Peace Among the Trees
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c82c746a955841276cb1dceed053bac8292a7f7aa7311a241a46eb45071ac. 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/USANG2448342.
Sound of Birds in Nature, Melody of the Morning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f0de2ee6d59d15ee9a904fc9fc9c6ba378564729f49c8c886a3e852bce002e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2448344.
Sound of Birds in Nature, Harmony at Dawn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c2f0c7e6ecc6b816c2f0887b5e8c836914deb992ec78db7e3d14d2fcd4e6f7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USANG2448335.
Sound of Birds in Nature, Songs of Freedom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd80ebf9d5c966a4cd517fc682d3fa077d83296a65b43a0ae607342b35ac0e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USANG2448336.
Sound of Birds in Nature, Echoes of the Forest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d9f06b8c168a67857de790948e3b7233e56c0bf7ff951727826703743a050. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USANG2448337.
Sound of Birds in Nature, Serenade in the Heights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7cf5152cfdf680b14dd31cf1bd060ff506f983bdff62e0fc4bccda31c1dd00. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USANG2448339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f306c02210978e61852d8e6deb81b571106ae6ac0be8c36309a1370054bf26. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USANG2448340.
Sound of Birds in Nature, Springtime Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c4ea2aac09106b4e4cb88eaee28236974912dd8ea45c8c28783d26f63536e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USANG2448341.
Sound of Birds in Nature, Whispers of the Wind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe5c50ed7dcb67c406b2a8d36d73dd81732546bb2cf7a7220ae8c17c71fbf0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USANG2448343.