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 0x2f3234f22beb0c3e8d8f9e05ce5bd20469703027d4cd3f76c6462f5344b93a16. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2457dc73-641d-4e11-89dd-3c8258a952a5.json and https://artists.proofprofile.net/proofs/artist/2457dc73-641d-4e11-89dd-3c8258a952a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019
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 0x39aa98f629810970f3af6e8950cbf4e62237e83c9205dd38f7657bb6167ebb71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NODGN1807010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231e170a82dabe9c89a29e695ef2d19dd477ba89d52aa18b3787c40888e3999. 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/NODGN1807090.
Vem kan segla förutan vind (Who can Sail without the Wind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35c64b0c2e42aaacaafbb519609b33a43211c7da5125282f6be54c4ed267a2a. 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/NODGN1807100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5feae8ae079bd5ce5af9d23bd84f1e847b7e8ebbccf6283776da41f9f42977. 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/NODGN1807320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155b221f53329ce1cff1ee500442b33a4df4f58b0822ee29b0113dedaacec3d3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOCJB1700903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5bcdf365315d702f1b8f2210445e674c4cad742f2da891b30a39817e60b819. 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/NOCJB1700919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ad0f14a94be651b49bc21563b9671ee2cabbc329b00b3e29be9b741b162f5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NOCJB1700902.
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
Gill Bay - New Music for Flexible Instrumentation - Demo Tracks 2018-2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4be74788ba5f78a597269bdd8803edd68dce6169bb4415ec0cfbf9bd704121. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NODGN1808020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab5ed7a9b07069969bf81b3afbb1c2ce3dfd3e9b76cc7d70b02987a8029f7b. 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/NODGN1808030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e182f1eaf6126a3b1ab1a89a7732f2ddf01c3880e8ed06e461f665f04cb3b2. 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/NODGN1808040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ace85e43594af470ec361c267a3aa6caff6201ab3d11cecccd2287730bc1f7. 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/NODGN1808100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c929a8dad5f032d4f224b17d4998d996d9c7fbebc8d8f527c68db18488fc8bb. 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/NODGN1808110.
Nøringen-Springdans (Two Norwegian Folk Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92383f21a95301de24c0432af72bbf3cc8802611bb8a8be386ee2a831542b916. 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/NODGN1808290.