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 0x76611734b83d6df288488155f09ad804436a841bc7a8c4ff8f43b46e586c3489. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7adb8c4-9301-4b05-8e97-6d3cb4749025.json and https://artists.proofprofile.net/proofs/artist/d7adb8c4-9301-4b05-8e97-6d3cb4749025.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269672027e452caa431e95a4831baa7a0042dffe325933d45e376ded8fa842a9. 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/IEPNH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c198cfab9a2611ed8add24e4558c1c088a9fa87b72e5b5b42868b36bef391. 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/QZHN52153990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4a9de31ccca5edab0d5067f5c826e74f14b71ba8c56d3168f06f88e365ded4. 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/IEPNH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b8d2bd3d795adae16852d49e22ca282dc91c19904a78442d43583c83cd6222. 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/IEPNH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf505cfc892041f34b9c2f1056d8787bef1b24df7a58ebe8ef0e00be85ecf734e. 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/IEPNH2100001.
Tírdhreacha Agus Fuaimdhreacha (Landscapes & Soundscapes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1a0256d333b6a9bc14f6726b839264b2b125591603a6e6b8d6f46faa7ad398. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEPNH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b874f4f077e42a83723ada8fa7df4a42c83032d46370da6c2c707c543e44d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEPNH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0613d4855fe693b2043eabb48db87b5e05602772a83bcf836b2c3dd83b4f1a2. 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/IEPNH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269672027e452caa431e95a4831baa7a0042dffe325933d45e376ded8fa842a9. 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/IEPNH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b8d2bd3d795adae16852d49e22ca282dc91c19904a78442d43583c83cd6222. 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/IEPNH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e2f19f6e9a4fcc8cbef837477546001bf3c6e780f0490ad1f8f81d2ae32f15. 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/IEPNH1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa7248d9722cafbc77164e3014f089f851c2a4d466add46715e9da82f28cb19. 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/QZK6J2033272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1a0256d333b6a9bc14f6726b839264b2b125591603a6e6b8d6f46faa7ad398. 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/IEPNH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b874f4f077e42a83723ada8fa7df4a42c83032d46370da6c2c707c543e44d1. 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/IEPNH2300004.