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 0x5d99490ed6117788c38383dec94444af4edf276fbd594e7358670d3d3e764df9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db30b44-3f69-4f0e-8c8b-a951d649aecb.json and https://artists.proofprofile.net/proofs/artist/7db30b44-3f69-4f0e-8c8b-a951d649aecb.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 0xa3aaf134f47c8a5904ec66d90ead2bc3499d2bb5c0023e232ff722831875b004. 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/CH7812227847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14981908e0dc09d0e746052666ed26da938a239072cfb3c40c1068d0d6a87dbf. 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/CH7812195238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695666fb40f60447643cca4b2c6f0c66f12562083d41f9b7efb53005ac3dc565. 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/QZP7F2112771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca334df264e9e06b57af7795dcf965574eb3f340606b3c64832d8f92b9c74b6. 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/QZP7F2102288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2721a21f9526e0c489be3a4cba3f6f24b1678f4e42cb966ca7191b0f7c7dd36b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAWHO2037195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7adc96b0b9d5b03d7e9c7ad90fe3a9aa3b43600725d96edc0caf331be55ae8. 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/CAWHO2031160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898a89781173f4f6dec1f5be89e81ba4e5374ce2ae19b117c71311e459a9089. 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/CAWHO2029607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5720a03afc2ad8f581420831a00ff952381d985d11ad4a1248721dd161d5d9. 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/CAWHO2025598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a28d0f4ba65eaf9cdae0aa925b4e73e270fe2adb8aa35af68a8a794ba5751. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAWHO2024175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10679aeb0ce02080b0088ba729428edac2884b6badc6fa71651dae82b87652cc. 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/CAWHO2019224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9162da1ebbd55278afed695ab24499697996889a7ea08a8468fcb03d4306f974. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAWHO2017922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bbc1e3e5ef6d630d900d4f3bebdf1668fe402c272c5d31e04ec6f99884aec4. 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/CAWHO2015634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bf949775ca6932fa996c45a59c350b9c6e58edb868a8f45d48d04754dea6e9. 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/CAWHO2013823.