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 0xc0a9e2721e2783c96f65c4e648fd30ec750b2f7441bea772138a1b17eea6af0e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e00ed76a-3c4f-4d0e-a958-f6cb39bce7c3.json and https://artists.proofprofile.net/proofs/artist/e00ed76a-3c4f-4d0e-a958-f6cb39bce7c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pen Paper and Coffee (Songwriter Strings)
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 0x0db5dcfb37b7a4958ff4d95b978867569e9c4c7290050c72318909f161e42f03. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/GBLLT2325285.
Dark Latin Chocolate Reggaeton Dark Lord New Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa685279532a6bfdbc81ae8e7e674c5effd3497526c701ecdb89d3e3701af04. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CA5KR2415508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71f4f407870caf3335dbffeb963566540c0c4a28d13d2daed2b92c1de25623. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2415509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcca7febaea9bdfab1b2fff4f2a68cb1d4e4e0600c6640735d9c511948c845fe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CA5KR2415512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7245c8fdd06f627a85c1cf652b66ed138e242f395977996878047ec51fbd271. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/CA5KR2415869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0a7491e3b70f9770bc7284ee74d26e54636d2d2b7f1997c125c5c8ed9d33c8. 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/CA5KR2415871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66423027e919dd762b5704e059df29ca68c66b65bfc004912e35a7c979e7fa9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2450261.
Time to feed the Streets 2 (Let Him Cook)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3818cefb90fb16c627201625fa8f30b0d0771de955c3caaae07686bb9317e2d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CA5KR2452932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaa97df372790eb55c4d76840c62c7fcf621918e1fd0b6941f9c75b92e10415. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CA5KR2452933.
The Enigmatic Journey of Freedomdeus Mostart (The Sigma Enigma)