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 0x1de68655529dd4ec55bc3ef0788edf3712ea348283bc3b1a9cb6cfd5be83da36. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7927325-e57c-42e4-8847-dfa9872808d5.json and https://artists.proofprofile.net/proofs/artist/f7927325-e57c-42e4-8847-dfa9872808d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Barnens lek & danslåtar, Barnvisor - Barnlåtar - Barnsånger - Barnmusik
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 0x2e2187c6d0e341ee2ff737c247be7dcfe13314ae01a1f734f15f03ee06e4876c. 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/SEVGT1601203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527b0c8914117c7216ec21a141ba8507ddeb81b676ee66a72846adb54f04a21. 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/SEVGT1601207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4db64104791464aa043f92bfbe8ad5170511084eeb5ff055a33586fd2b9ce. 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/SEVGT1401506.
Våra barns godnattsånger - älskade godnattvisor & vaggvisor för alla barn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4db64104791464aa043f92bfbe8ad5170511084eeb5ff055a33586fd2b9ce. 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/SEVGT1401506.
Barnplaneten - Upp och hoppa, dansa och lek - Barnmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab5326d6ebf2a27bf7c9c3bb21d1b16576dc8799b19cceaf90fd4555ad6821. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEVGT1500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8620f3c7fe88c9e11b8a2593621ae3a2bede4f7d8bdd193aebc7b99d18c9bf. 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/SEVGT1500209.
Våra barns favoriter - Barnmusik, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4db64104791464aa043f92bfbe8ad5170511084eeb5ff055a33586fd2b9ce. 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/SEVGT1401506.
Våra barns favoriter - Barnmusik, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee753116da87c443c6e4dadbd28bb5d10aa1e333515be7e05781d4290f65b2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:00Z), 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/SEVGT1500505.