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 0x1968e69ab4b84fc19be384e14024e0adea81393c9a45b3d2f587fe2aebbdd074. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb4d42da-aa52-41f3-b433-60c17b6763c1.json and https://artists.proofprofile.net/proofs/artist/bb4d42da-aa52-41f3-b433-60c17b6763c1.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 0xaf1cb8b71e79e06da7b52b642686ae343ff3af08b1848fd2a5952550b132c459. 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/TR0440601601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008a8c9c4080e5c96d3dce42e3806257d9c2524ee0c8e7785e5ebfcbb8fbc382. 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/TR0440601604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be478a15c0d23377aabf19d09ba2305024c0f2dcd636e70e967683a379a490. 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/TR0440601608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf05ee6c67139cdfcdbf0ee63b870ba0c64bb1e053959f65e0da73326999eb. 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/TRBMF1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b3203ba269f13804a1d9e7c408b386d76386e2658c0ce1e3670220084041f. 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/TRBMF1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abcd271a9396c3e6d305c30f3f5736fa76bcdd8e268120114bbddc428b76ed2. 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/TR0531605756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d68ef6ec038451f4569110131c80dbf4e3c8efa54e54f203ee0c441a1f7eb8. 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/TR0531605757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac1fa3435ec419dfe756044bfcd77f6e596b0f005b421b764bf4ec6720374bc. 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/TR0531605758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e69dfb88bc3a2fa5645eb78c54cb97ff3e2f78f579332cc4c91f23c40ad2608. 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/TR0531605762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2207b416e6f074aaaadc1bf13f622fa01f75dcdf19c7e3748ef55d33c1723d. 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/TR0531605763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b7675752ab71e42bb4eb57a3b2b0af245e7b3d39838f4c679fdb554eed480. 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/TR0440803703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810a6ab33916fe9a0d27fde278d8db60be9a373bd62d495fbca1749f5015b877. 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/TR0440803704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6f32c1fe60910ea9bcc9c5482f8697d14cbad6c1b4ceb7d8ff6312a5f17054. 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/TR0440803705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180ab9162d6da682256bdc5055a940d988beb1f918dfa91c8b95d808a9b1ef48. 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/TR0440803706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88da8642204db58984836ba8f3de9678fa1a23a30428a004bd3fb251afba1e29. 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/TR0440803707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8140efeddb63d2110d07fc48abdf948a2e5914f162ac1fe0f67294d6b6ba3842. 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/TR0440803709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa942a0af86b5e482c74f7c97d636a06452495035f41cdd5ce81d714c44a6af09. 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/TRAKF1625138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e10a971207fb487799962c47105b3fd9462d7d1dfeb99db6f00b9ab99137075. 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/TRBMF2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8c458d29ac0e8670399c42b67691637da23efa4251ba319cfee1a57ca82285. 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/TR2181315101.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b3203ba269f13804a1d9e7c408b386d76386e2658c0ce1e3670220084041f. 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/TRBMF1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a01dbbc09a101833856500c30ff9b5e14db3e845d63050f128491c99ba7abf. 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/TRBMF1900001.