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 0x0818b511620dda526cce33722621551d9526bb23be6fd196b830c668193eab38. 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/dc62b85c-9dd1-4fe7-8d20-59c77d150e6d.json and https://artists.proofprofile.net/proofs/artist/dc62b85c-9dd1-4fe7-8d20-59c77d150e6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Broken Kites (Vijay & Sofia Zlatko Remix)
Broken Kites - Vijay & Sofia Zlatko Remix
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 0x778defc1c6e309e4d025789ded39ced0c326a0ae438b94273e8c3c5773e64484. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ITCY41600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffbbfe1e53e5479b3c7f4e7ec6eeb0b4d8523c9d5f0a93697e407db36200ec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ662493774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2f4683559cf59a14664ac87f0a0f12ba6a4e5a21b32bb7127986b81106402. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZYFZ2409928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd22c4ab54d899330d2142c653c85d0ce130ea6766230a1074a2e7fdd1faab2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2409923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ea77bc3db3a71d0016d098f0305861ee3d864a926d8165f766ee126f36a527. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2409922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef101ae616139ceb3606cf6bc74afc9b38909c2c60dd39bbf1b92f0ef3278ad. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZYFZ2409930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9bdbc6ff53abe409f92221de21a6a207b1920f1a364858bfcd994aa71ffcaf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZYFZ2409927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4748d61889254f37329bd32c49311761a371e7ca1dee36fd57c6dfaeefb6f0ad. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2409921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d64319986f4e6b33386e7bbe688e0b44780234c5372788b93f3ff2b434da28. 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/NLF711603045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfdf517534baff36ffd45dd504c3e85c4ddcddc53609422fb3b6b719b76005c. 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/NLF711503335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69fdb54808ea1aa45004a74cc7e7a28989a84b08db3ed79bd1800ab69429151. 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/NLF711504100.