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 0x33b32f9dce53ffde66c2ba99aa09c7c691def3410c4cf95cc3e1c84888aa9378. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/beacce29-3649-45db-94d5-a2755ae1f901.json and https://artists.proofprofile.net/proofs/artist/beacce29-3649-45db-94d5-a2755ae1f901.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 0xc481b3f2e79869257f8594476615862c4b3550604283426428c377e3af93a681. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/INA179600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba556d6f13c012de419b02eee6885a20f727c179e9044a51f26cc5104bd844a6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/INA179600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabab2816e7e688ed8e7f575523e54158bad9140817fcc966039d03e7241dfee. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:07:04Z), 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/INA179600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7cc9feac263e5ace386efd47aff2e0948e4875960b3abd96a12ace1a3eb49. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/INA179600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4eeaaa2f231d9aa09291a411973fb55c3944d6731c37c48af3b2d6feed45cf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INA179800322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed94021af906321c74d216733c25e18299c9d03c59e7e2c518b0642eba0a5ec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INA179800323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc55ef54ff39a720308bef8bfc8f87b3237be610547f3375b96b1caedfe8c5a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INA179800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc6cfd60ecd7761d6f8eea25d34d90315265179019b102dafe25378eef61db. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:51:47Z), 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/INA179800325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedd6324ed2ebe31b253e1051d777290694766f40005af658c839c7a9f826794. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INA179800326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3266477116b0a96379ea567a0775ab9987ead7b0f06de77487fb5ce9e821aa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:00Z), 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/INA179800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a42e264cc02102c92835de3f51235eb4bca448e5b8e8e04475faa6d08d34f5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/INA179800328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc65979a08b24c2b3be6c0b46c92323a29dd3d52751c57ccdfb54e0a1f845c48. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:10Z), 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/INA179800329.