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 0xdacdd4428c7e17c16e324e3546a81556d703681a579c074ccb40c0e2e50478cf. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34ccef63-ac3a-4292-aa53-d335dec56773.json and https://artists.proofprofile.net/proofs/artist/34ccef63-ac3a-4292-aa53-d335dec56773.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xfb95a6d10b23407e9eb4f1be0320c61f20cfaf98b951536e57b1b00bbec028a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBCCH9700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f76d75fea17762f9f27ce31cac36312aa1f452d7e0a8f5caf3d9dd5239f2e7. 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/GBCCH9700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f22fc6c0bef9632e20619fa986eadc7625f7779c05faea498b0db958160d3a. 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/GBCCH9700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31edf3ce1bc9453559a4cf645f60990232f37b25370e7f460fa7269620c59cc2. 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/GBCCH9700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8d74f276377dbb557d662650cf6e724c01432ef06eb5a9273a63cd28d3ad2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCCH9700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fade990decbbc0a25affc33a18dd76240f7e98ae41f916fdf32ff6da71dce8a. 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/GBCCH9700308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3046cde7b63551ec11eed0575caa929f8b027dbfe059f748a1817c9fbbd77fc. 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/GBCCH9700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb13f24ed00e9a6046934a03e3a747d21819b4074438ebb38b11d2f694c3252. 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/GBCCH9700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7409a4666c07bf37e19e82a8455451b5188ed4af46c44ab2e70630750117e718. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCCH9700311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc5d3c638129b817562b5493fa8e2058c14ae28b19c6b81a3fa2f56931b6d8d. 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/UKW3Z2501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112f24ba0788fde1f783920c4cfd12b344c413260321e8d0c63b3584bc466b7. 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/UKW3Z2501044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82e2bbe4f4d3ab7d22b5e48c2cbe703fc8406a3ef293f1f7d5ea0660563de5. 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/GBRD52200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c99f00bd55ce279fd108b8cc0d1b2599c8efb51cada7870d53d2f88e2d3a9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:00Z), 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/GBRD52200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3846212e59c8a601cbd6877c52d9ccd1336c231207bce683631e06409c2d5885. 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/GBRD52200320.
King of the Beats / Thru the Vibe (2 On 1 Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a7a5c96909b411be8caa71c39dc9215996a9a9d0e84c23bf94d50d7096d1ab. 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/GBAGN9400015.
Architecture Dub #003 (Nookie / DJ Crystl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1246e9deeb263eff45a5e321926d7155abd3c96d4751dec1b157502cdc48479. 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/GBSV52500009.